THREE-PHASE POWER CONTROLLER

PA-3000-H3
INSTRUCTION MANUAL

- Contents INTRODUCTION..............................................................4
1 FOR SAFE USE OF THIS INSTRUMENT (Warning) ..5

2 CHECKING THE MODEL NUMBER .......................7
3 INSTALLATION.........................................................8
3.1 Installation Dimensions...............................................................................................................8
3.2 Installation Precautions...............................................................................................................94 DIMENSIONS AND NAME OF SECTIONS ..........10
4.1 External Dimensions ................................................................................................................10
4.2 Name of sections......................................................................................................................11

5 CONNECTIONS .....................................................13
5.1 Connection Precautions...........................................................................................................13
5.2 Functions of Setting Terminals .................................................................................................14
5.3 Preparation for Connection ......................................................................................................16
5.4 Connection of Main Circuit Terminals ......................................................................................18
5.5 Connection of Setting Terminals ..............................................................................................20

6 PARAMETER SETTING.........................................22
6.1 Front Panel ...............................................................................................................................22
6.2 Slope.........................................................................................................................................23
6.3 Elevation ...................................................................................................................................24
6.4 Soft Start ...................................................................................................................................24
6.5 Current Limit .............................................................................................................................25
6.6 Heater Disconnection Alarm ....................................................................................................26
6.7 Imbalance Adjustment..............................................................................................................26
6.8 Imbalance Alarm.......................................................................................................................28
6.9 Alarm Output Forced OFF........................................................................................................28
6.10 Feedback Control OFF ..........................................................................................................28
6.11 Dip switch Functions...............................................................................................................292

7 Running ...................................................................30
7.1 Check before Running .............................................................................................................30
7.2 Start of Operation......................................................................................................................31
7.3 Status Display...........................................................................................................................32

8 ALARM ....................................................................33
8.1 Alarm Activation and Alarm Output ..........................................................................................33
8.2 Alarms and Countermeasures .................................................................................................33

9 SYSTEM PROTECTION........................................34
9.1 Power safety ………………………………………… ……………………………………. 34
9.2 Protection by alarm output 3 ………………………………………………………………….. 34
9.3 Installation environment…………………………………………………………………………36

10 TROUBLESHOOTING…………………………… 37
11 MAINTENANCE.....................................................39
11.1 Routine Inspection and Maintenance.....................................................................................39
11.2 Fuse Replacement .................................................................................................................40
11.3 Cooling Fan Replacement......................................................................................................41
11.4 Fuse Replacement for the receiving board............................................................................42

12 GLOSSARY ...........................................................4312.1 Control Systems.....................................................................................................................4312.2 Feedback Type.......................................................................................................................44
12.3 Settings...................................................................................................................................45
12.4 Alarm.......................................................................................................................................46
12.5 Load........................................................................................................................................48
12.6 Other.......................................................................................................................................48

13 GENERAL SPECIFICATIONS................................50

3

INTRODUCTION
Thank you for purchasing the PA-3000-H3 series power controller.
This manual contains instructions for the mounting, functions, operations and notes when operating the
PA-3000-H3 series power controller.
To prevent accidents arising from the misuse of this power controller, please ensure the operator receives thismanual.
The PA-3000-H3 series 3-phase angle control power controllers feature a compact size/lightweight
construction and are for high-density instrumentation. They are designed for exclusive use in 3-phase angle
control, and are power regulators to control the power applied to an electric furnace heater, etc. by receiving
signals from a controller or a manual setting unit.

CAUTION(1) The information given in this manual may be subject to change without notice.
(2) Every possible care was taken in compiling this manual. However, if you find a question, error or mistakein it, please contact your nearest distributor.
(3) In spite of (2) above, SHINKO does not assume any liabilities concerning the results of this instrument’s
operation.

4

1 FOR SAFE USE OF THIS INSTRUMENT( Warning)This chapter describes how to use this instrument correctly and to avoid injuries to you or others and property
damage. Be sure to understand the following information thoroughly and observe the warnings and cautions
given.

1. Checking the productThis instrument has passed our strict shipment inspections. After delivery, be sure to check the following
items before use.
(1) Check if the delivered instrument is the one you ordered.
Ensure the specifications including the model number, rated voltage and rated current are correct.
(2) Check if this instrument was damaged during transportation, etc.
Thoroughly ensure that this instrument is not damaged.
If you notice any problem, please contact your nearest distributor.

2. Preconditions for use
This instrument is a component type designed for the installation inside an indoor instrumentation panel. Do
not use it otherwise.
Before using this instrument, ensure safety by confirming the functioning of the fail-safe design, periodical
inspection, etc. before shipping. In addition, for connection/operation of this instrument, use a professionalwith instrumentation knowledge.
Furthermore, it is necessary for an operator of this instrument to read this instruction manual for the proper
understanding of fundamental operation, various precautions, etc. of this instrument.

3. Labels attached to this instrument
The following labels are attached to this instrument to ensure its safe use.
Label
Name
Description
Alert symbol markThis label is attached to places requiring care in handlingwhere there is a risk of electric shock or injury.

Protective conductor
terminal

To prevent an electric shock, connect the protective
conductor terminal to the protective conductor(grounding) of the facility.

Caution: Moving parts

Keep your hands away from the mobile part (top panelfan) to prevent from injuries.

Caution: High temperaturesurface

To prevent burns, keep your hands away from the top
and side panels.

4. Symbols used in this manual
The safety precautions are classified into categories: “Warning” and “Caution”.
Depending on the circumstances, procedures indicated by
Caution may be linked to serious results,
so be sure to follow the directions for usage.
SymbolScope
Procedures which may lead to dangerous conditions and cause death or

WARNING serious injury, if not carried out properly.
CAUTION

Procedures which may lead to dangerous conditions and cause superficial tomedium injury or physical damage or may degrade or damage the products, if
not carried out properly.

5

WARNING
The following information is critical for safety. Be sure to read and understand the following warnings
thoroughly before reading this instruction manual. Remember that every warning is critical for preventing
injuries and other accidents.

1. Installation on an instrument panel
Make sure to install this instrument inside an indoor instrument panel. Never use it on a desktop. As
some of the main circuit terminals of this instrument are exposed, protect them against human contact byusing a safety measure such as protective covers.

2. Over-current protection device
This instrument does not have a power switch. As a consequence, the power supply to this instrument
should be protected with an over-current protection device (such as a circuit breaker) matching thepower rating.

3. Installation safety devices
When this instrument is installed in or near other equipment, whereby the failure of this instrument or
peripheral instruments may lead to damage or fiscal loss, make sure to attach all safety devices to theequipment and perform a final check of its fail-safe design at the final product side. Also, never use this
instrument in important equipment affecting human lives, nuclear power, aviation or space.

4. Before turning this instrument on
Confirm that the protective conductor terminal of this instrument is connected to the protective conductor(grounding) of the facility. Also, to prevent malfunction, make sure to connect a load to this instrument
before turning the power on.

5. During operation
Do not touch this instrument during operation (as well as when it is turned on). High-voltage andhigh-temperature parts are very hazardous. Particularly, never touch the top panel, side panels, coolingfan, terminals and their surrounding area.

6. Modification or repair
To avoid an electric shock, fire or malfunction, this instrument must not be repaired, modified ordisassembled by any person other than our authorized service personnel.

7. Compliance with the instruction manual
To use this instrument correctly and safely, use it in accordance with this instruction manual. We will notassume any liabilities for claims based on injuries, damage, loss of profit incurred due to abuse or
misuse of this instrument.

8. Stop supplying power immediately if any abnormal event occurs.
Turn off the power immediately and contact your nearest distributor if there is any unusual odor, noise,smoke or abnormal heat.

9. Caution when lifting heavy products.
Products heavier than 18kg need more than one person when handling. The weight(s) of the products
are shown in the [General Specifications] of this instruction manual.

62 CHECKING THE MODEL NUMBER
Control system
Phase control,
Voltage feedback
Phase control,
Current feedback
Phase control,
Power feedback
Phase control,
No feedback

Control system
Phase control,
Voltage feedback
Phase control,
Current feedback
Phase control,
Power feedback
Phase control,
No feedback

30A

50A

Rated current
75A

PA-3030-VH3

PA-3050-VH3

PA-3075-VH3

PA-3100-VH3

PA-3150-VH3

PA-3030-AH3

PA-3050-AH3

PA-3075-AH3

PA-3100-AH3

PA-3150-AH3

PA-3030-PH3

PA-3050-PH3

PA-3075-PH3

PA-3100-PH3

PA-3150-PH3

PA-3030-H3

PA-3050-H3

PA-3075-H3

PA-3100-H3

PA-3150-H3

200A

250A

Rated current
300A

400A

500A

PA-3200-VH3

PA-3250-VH3

PA-3300-VH3

PA-3400-VH3

PA-3500-VH3

PA-3200-AH3

PA-3250-AH3

PA-3300-AH3

PA-3400-AH3

PA-3500-AH3

PA-3200-PH3

PA-3250-PH3

PA-3300-PH3

PA-3400-PH3

PA-3500-PH3

PA-3200-H3

PA-3250-H3

PA-3300-H3

PA-3400-H3

PA-3500-H3

100A

150A

For a feedback type, 3 pieces of CT (Current transformer) are required for detection of load current andover-current.

7

3 INSTALLATION
3.1 Installation Dimensions (Scale: mm)
For the dimensions of this instrument itself, see chapter 4, “Dimensions and Name of sections.”
Rated current: 30A/50A

Rated current: 75A/100A

210

Rated current: 150A/200A/250A

Rated current: 300A/400A/500A

Caution: Minimum distance when plural instruments are installed side by side8

3.2 Installation Precautions
To prevent accidents, make sure to turn this instrument off before proceeding to the

WARNING following operations.

Except for the accessories of the setting units, this instrument has been designed as a back -paneled unit to
be installed inside an instrumentation panel.

CAUTION

Environment• Inside an instrumentation panel indoors• Out of direct sunlight• Avoiding mechanical oscillations or impact• Clear of water splashes• Unaffected by strong noise, static, electric or
magnetic fields• Ambient temperature -10 to 55 (When the ambient
temperature exceeds 40 , reduce the load current.)• Ambient humidity 30 to 90%RH (No condensation)• Free from corrosive, explosive, flammable, or
combustible gases, salt, high iron content, steam, oil,chemicals, conductive materials, mine dust or otherunusual substances (metal powder, cut glass, iron orcarbon)• Free from dust or dirt

Other

• Installation location altitude should be 2,000 meters or less.
• This instrument has high-voltage and high-temperature parts exposed externally. When installing this
instrument, take proper measures to avoid contact with those parts.
• To allow the ventilation/cooling effect to achieve full performance, be sure to install this instrument with the UP
mark (↑) facing upward. Reserve a space of 200 mm or more above the top of this instrument and a space of
100 mm or more below• Keep the ambient temperature specified by placing a cooling fan, an air conditioner, etc. inside the panel, if
necessary.
• Ensure that the panel on which this instrument is installed is strong enough to support it.
• To protect the system, be sure to install an external rapid-break fuse when the instrument does not have abuilt-in rapid-break fuse.
• Separate this instrument from equipment (electro-magnetic switch, motor, inverter, etc.) generating strong
noise.
• The output waveform of this instrument contains harmonic components, which may become a source ofpower wave distortion or harmonic noise to other equipment. To prevent such problems, be sure to takecountermeasures when installing peripheral equipment.
• Do not connect anything to the terminals that are not used. Otherwise, a malfunction may result.
• To prevent malfunction of this instrument due to environment, be sure to take the following dust measures atthe control panel side. (especially in the case where this instrument is used under a special atmosphericcondition such as using a carbon heater, etc.)
1. Design the control panel with a sealed structure and take heat radiation measures.
2. Apply the air purge to the control panel.
3. Perform periodical cleaning.
• Working ambient temperature is between -10 and +55 , but the rated current is specified for an ambient
temperature of up to 40 as a reference. If the temperature exceeds 40 , be sure to lower the load current
by referring to the following graph.
100
Allowable load
current (%)

80
60
40
20
0 -10

0

10

20

30

40

Ambient temperature ( )

9

50

55

4 DIMENSIONS AND NAME OF SECTIONS
4.1 External Dimensions (Scale: mm)

ø18

Rated current: 75A/100A
210

ø9

30

30

12

ø9

12

Rated current: 30A/50A

Protective conductor
terminal M4

U1 U2

V1 V2

W1 W2

13

200
Main circuit
terminals M5

13

28 56 28 56 28

94.5

19

288

200

110.5
220

Main circuit
terminals M6

Rated current:150A/200A/250A

Rated current: 300A/400A/500A
260

φ9

30

ø9

12

15

15

U1 U2 V1 V2 W1 W2

28 33 28 33 28

Setting terminals M3
Protective
Protective
Conductorconductor
terminal
TerminalM4
M4

300

280

280

300
325

Setting terminals M3

325

ø18

260

440

325

Setting terminals
M3M3
Setting
terminals
Protective
conductor
Protective
terminal M4
conductor
terminal M4

Setting terminalsM3

W1 W2

Main circuit terminals

67

70

67

70

13

70

*

Maincircuit terminalsM10

131
70

240

420

U1 U2 V1 V2 W1

Protectiveconductorterminal M4

67 3337 67
420*141 for 250A type only

W2
10
70

65

V2

*
M12

25

V1

25

U2

25

U1

13

Setting terminals M3

300

270

ø18

470
495

30

12

φ18

50
154
240
* M16 for 500A type only10

4.2 Name of sections
Rated current: 30A/50A (Uncovered view)

Setting terminals

Front controls

Rapid-break fuse

U1

U2

V1 V2

W1 W2
Protective conductor terminal

Main circuit terminals

Rated current: 75A/100A (Uncovered view)

Cooling fan *Setting terminals

Fuse for receiving board
Rapid-break fuse

Front controls

Receiving board box

U1 U2

Main circuit terminals

V1

V2

W1 W2

Protective conductor terminal* Cooling fans not mounted for a rated current of 75A units

11Rated current: 150A/200A/250A (Uncovered view)

Cooling fan (*1)

Setting terminals

Fuse for receiving board
Front controls

Rapid-break fuseReceiving board box

U1

U2

V1

V2

W1

W2

Protective conductor terminal

Main circuit terminals(*1)For units with rated currents of 200A and 250A, 3 fans are provided.

Rated current: 300A/400A/500A (Uncovered view)
Cooling fan (*2)

Setting terminals

Fuse for receiving board
Front controls

Receiving board box
Rapid-break fuse

U1

U2

V1

V2

W1

W2

Protective conductor terminal
Main circuit terminals(*2) For units with rated currents of 300A, 2 cooling fans are provided.

12

5 CONNECTIONS
5.1 Connection Precautions
WARNING(1) To prevent accidents, make sure to turn this instrument off before proceeding to the following operations.
(2) For safety, make sure to connect the protective conductor terminal to the protective conductor of the facility.
(3) For the main circuit wiring, connect the power supply side to the terminals U1, V1 and W1, and the load side
to the terminals U2, V2 and W2.
(4) Make sure to coat the conductive parts with insulating materials (tube, tape, etc.) in the power supply
connection sections. Any exposed connection part may result in a fire due to an electric shock or
short-circuiting.

CAUTION(1) Ensure that the rated voltage of this instrument matches the supply voltage.
(2) Check the size of each screw/bolt and tighten it with a force within ±10% of the specified securing torque.
Screw securing torqueM3
0.5 Nm

M4
1.2 Nm

M5
3 Nm

M6
5 Nm

M8
12 NmM10
25 NmM12
40 NmM16
100 Nm(3) Select wires with a gauge matching this instrument. Using a too thin wire may result in heat generation or afire. The dielectric strength of the wires should be high enough to withstand the circuit voltage. Otherwise, anelectric shock may result.
(4) Use crimp type terminals for connection to the setting terminals. Imperfect connection may result in an electric
shock or malfunction.
(1) To prevent noise, distribute the wires to the setting terminals apart from the main circuit terminals (U1, V1, W1,
U2, V2, W2) and do not put them in the same duct as the wires for the main circuit.
(2) The crimp type terminals for use with the setting terminals should be the R1.25-3S (small diameter for M3
screws).
(3) Even when this instrument is not operating with output, its output terminals generate a voltage from theinternal snubber circuit. So it is necessary to install an over-current protection device (a breaker, etc.) toprevent an electric shock during maintenance and inspection.
(4) Due to the performance of this instrument, its wires may cause noise interference with external equipment. Be
sure to distribute the wires of this instrument away from those of the peripheral equipment.
Also take noise countermeasures, such as the insertion of noise filters, as required.
(5) Equipment that are sources of noise (magnetic switch, motor, inverter, etc.) in the surroundings may affect theoperation of this instrument. Distribute the wires of this instrument away from such peripheral equipment, andalso take noise countermeasures, such as the insertion of noise filters, as required.
(6) After connecting, be sure to attach the cover to its original position to ensure safety.

13

5.2 Functions of Setting Terminals
If settings are performed immediately after turning this instrument on, sudden changes in
the output may affect the load or peripheral equipment. Perform the setting change
gradually after the output stabilizes.

CAUTION

This instrument has setting terminals in addition to the main circuit terminals. Use them as required.

5.2.1 Layout and names of setting terminals
Terminal layout
Remote setting input (AI) types
 AI1: Slope

Potentiometer signal(10k is recommended.)[0 - 2.5VDC = 0 - 100%][Function selection by DI3 and SW2 No. 4]

 AI2: Elevation

Non-voltage contact oropen collector(Contact capacity: 1mA 5V DC
or more)Remote control input (DI) types
 DI1: Operation state (Run/Stop) switching[Logical switching by SW2 No. 1]

 DI2: Control system (Phase/Zero) switching[Logical switching by SW2 No. 2][Function selection by DI3 and SW2 No. 5] 2.5VDC

 DI3: Setting system (Front/External) switching AI3: Current limit[Logical switching by SW2 No. 3][Function selection by DI3 and SW2 No. 6]

Setting terminalAIAI

COM VREF

AI

AI
1

AI
2

AI DI DI
3 COM 1DI
2DI
3 (NC)(NC)(NC)

1

2

3

4

5

8

9 10 11 12 13 14 15[Wiring example]
Without setting
unit

19

19
20
(10k )
Manual setting
unit

1
2
20

(10k )

1

6

7

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

20
Slope setting unit

DI

Input

mA V

+

CT
U

OUT IN-K

4~20mADC
Input resistance: About 100[Short out (16) and (17)]

CT
V

L

Phase UCT
0-5AAC

1 - 5V DC
Input resistance: About 50k[Short out (17) and (18)]

K

(NC)

CT
W

L

Phase VCT
0-5AACK

CT

L

Phase WCT
0-5AAC• When the CT is not built in, connect
a CT externally if required.

• Do not connect the secondary sideof the CT to ground in parallel.

AL3 AL2 AL1Alarm output: 3 points (AL1,AL2,AL3)
Mechanical relay/ a contact
Max. load: 240VAC/1A, 30V DC/1A
Min. load: 5V DC/10mAor more
Alarm type:AL1: Over-current alarm, rapid-break fuse melting
alarm, radiation-fin over-heat alarm (100Aor
more)AL2: Element abnormality alarm, heater disconnection
alarm, unbalanced phase alarm
AL3: Phase sequence abnormality alarm, phase drop
alarm, frequency abnormality alarm
TheAL3 alarm output relay becomes OFF when thealarm is activated.

•

The actual layout is either horizontal or vertical depending on model.
Terminal list
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)

Remote setting input common (AI COM)
Remote setting input ref. voltage (AI VREF)
Remote setting input 1 (AI1)
Remote setting input 2 (AI2)
Remote setting input 3 (AI3)
Remote contact input common (DI COM)
Remote contact input 1 (DI1)
Remote contact input 2 (DI2)
Remote contact input 3 (DI3)

NC
NC
NC
Alarm output 1 (AL1)
Alarm output 2 (AL2)
Alarm output 3 (AL3)

(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(25)
(26)
(27)
(28)
(29)
(30)

Control input signal (+)
Control input signal selection (mA/ V)
Control input signal (-)
Control signal output (OUT)
Control signal output (IN)CTU (K)CTU (L)CTV (K)CTV (L)CTW (K)CTW (L)NC
Alarm output 1 (AL1)
Alarm output 2 (AL2)
Alarm output 3 (AL3)The “NC” terminals are not used, so do not connect anything to them. Otherwise, malfunction may result.
Be careful that the control signal [(16) - (20)] and the remote setting input signal [(1) - (5)] are not isolated in
the internal circuitry of this instrument.
14

5.2.2 Details of setting terminals
Pin No.
(1)
(2)
(3)
(4)
(5)
(6)

Name
Remote setting input
common (AI COM)
Remote setting input
ref. voltage (AI VREF)
Remote setting input 1(AI1)
Remote setting input 2(AI2)
Remote l setting input 3(AI3)
Remote contact input
common (DI COM)

(7)

Remote contact input 1
(DI1)

(8)

Remote contact input 2
(DI2)

(9)

Remote contact input 3
(DI3)

(13)
(28)

Alarm output 1
(AL1)

(14)
(29)

Alarm output 2
(AL2)

(15)
(30)

Alarm output 3
(AL3)

(16)

Control input signal (+)(17)

Control input signal
selection (mA / V)

(18)

Control input signal (-)(19)

Control signal output
(OUT)

(20)

Control signal input (IN)

(21)
(22)
(23)
(24)
(25)
(26)

CTU (K)CTU (L)CTV (K)CTV (L)CTW (K)CTW (L)Function
Common (reference ground) terminal for the remote setting input (AI)Outputs 2.5V DC reference voltage for the remote setting input (AI)Inputs analog signal for the slope setting
0 to 2.5V DC of analog signal corresponds to the slope 0% to 100%.
Inputs the analog signal for the elevation setting
0 to 2.5 V DC of analog signal corresponds to the elevation 0% to 100%.
Inputs the analog signal for the current limit settings
0 to 2.5 V DC of analog signal corresponds to the current limit 0 to 100%.
Common (reference ground) terminal for the remote contact input (DI).
Inputs the remote contact for operation status (Run/Stop) switching.
When “Stop” is switched to “Run”, the internal SV (control SV used incomputational processing) starts from 0%.
Input the remote contact for the control system (Phase angle/Zero-cross)switching.
When switched during operation, the internal SV (control SV used in computational
processing) starts from 0%.
Input the remote contact for the setting type (Front setting [SETpotentiometer]/Remote setting input [AI]) switching.
The alarm output relay is turned ON when an over-current, rapid-break fusemeltdown or heat radiation fin overheat, or their combination, occurs.
To avoid noise and protect contacts, be sure to connect a contact protection device
and connect the load to it via a buffer relay. (Ref. 5.4.3)
The alarm output relay is turned ON when the heater disconnection, thyristor
element abnormality or unbalanced phase, or their combination occurs.
To avoid noise and protect contacts, be sure to connect a contact protection device
and connect the load to it via a buffer relay. (Ref. 5.4.3)
The alarm output relay is turned ON after the initialization operation (mainly
frequency assessment operation based on the synchronizing signal) is completed
normally at start-up or reset. The relay is turned OFF when a phase sequenceabnormality, phase drop, frequency abnormality, or their combination occurs. To
avoid noise and protect contacts, be sure to connect a contact protection device
and connect the load to it via a buffer relay. (Ref. 5.4.3)
Connect the (+) signal of the control input signal.
Terminal to select whether 4 to 20mA DC or 1 to 5V DC control input signal is used.
To use 4 to 20mA DC control signal, short terminals (16) and (17).
To use 1 to 5V DC control signal, short terminals (18) and (17).
Use the provided short-circuit plate for the short circuit.
Connect the (-) signal of the control input signal.
Outputs 0 to 2.5V DC of control signal, which corresponds to 0 to 100% of control
input signal, from the internal circuitry.
Usually, connect this terminal (19) directly to the control signal input (IN) terminal(20). Use the provided short circuit plate for connection between (19) and (20).
Inputs 0 to 2.5V DC corresponding to 0% to 100% of control signal.
Usually, connect the control signal output (OUT) terminal (19) directly to this input
terminal (20).
CT input (K) terminal for the U-phase.
CT input (L) terminal for the U-phase.
CT input (K) terminal for the V-phase.
CT input (L) terminal for the V-phase.
CT input (K) terminal for the W-phase.
CT input (L) terminal for the W-phase.

15

5.3 Preparation for Connection
The locations of the main circuit and setting terminals differ depending on model.

CAUTION
Do not remove the cover for wiring, except when wiring
to terminals for an external transformer connection.
Otherwise, malfunction of this instrument, including
damage to the internal electronic circuitry, may result.

(30A – 500A type)
Step 1

Step 2
Loosen screws.

Step 3

Remove the setting terminal cover.

Step 4Loosen screws.

Raise the cover slightly
and remove the coverfrom the screws asshown.

16

Step 6

Step 5Lower the cover andconnect wires to thesetting terminals.

Raise the cover andplace the notch of thecover on the screw asshown below.
Connect wires to themain circuit terminals.

Main circuit terminals
Step 7

Step 8

Reattach the coverand tighten thescrews.

Reattach thesetting terminal
cover and tighten
the screws.

17

5.4 Connection of Main Circuit Terminals(1) To prevent accidents, be sure to turn this instrument off before proceeding to thefollowing operations.
WARNING(2) The connection should be performed by personnel with sufficient knowledge andpractical experience of wiring work.

5.4.1 Basic connection
Setting terminals
21 22 23 24 25 26
KL

Do not connect thesecondary side of
the CT to ground.

K L * CTKL

Main circuit terminals
U1

U2

S

V1

V2

T

W1

W2

L

K

L

K

Load

R

L

K


Protective conductor (ground)* When the CT is not built in, externally connect a CT as required.
Standard type (Main circuit power and control circuit power utilize common terminals.)

Do not connect thesecondary side of
the CT to ground.

Setting terminals
21 22 23 24 25 26

Main circuit terminals
U1

U2

S

V1

V2

T

W1

W2

K

K L * CT

KL
L
K

L
K

Load

R

KL

L

Over-current
protection device

Equipment powerUV
Protective conductor (ground)* When the CT is not built in, connect a CT externally as required.
Special type (Main circuit power terminals are separated from those of control circuit power.)18

5.4.2 Connection of the transformer load

Main circuit
terminals
U1

U2

S

V1

V2

T

W1

W2

Load

R

*
Dummy resistor
3- phase transformerProtective conductor (ground)* A non-load running, in the case of the transformer load, may cause damage to this instrument and/or
peripheral equipment (including the transformer). To prevent such damage, connect dummy resistors
across the phases on the primary side of the transformer.
Use dummy resistors with resistance that can set currents between phases to 0.5A or more. For example,
when the power voltage is 200V, the resistance should be 400 . In addition, the resistors should have ahigher power value, being three or more times the calculated value: For example, for the 400 resistor,
select a resistor with 300W or more as the calculated power value is 100W. Also, take necessary
countermeasures such as cooling fans, depending on heat generation.
Never touch the dummy resistors because they are dangerous due to generated heat.

(1) Be sure to match the power phase on the power supply side and load side.
(2) Use a high-quality power supply. If the waveform is distorted or includes noise, normal
CAUTION
control will not be performed. This caution is particularly important when using a private
electric generator.

5.4.3 Connection of the alarm output

Connect the alarm output terminals to the load via a buffer relay and contact protection element.

×X

Z: ContactＺ：接点保護素子
protection element

Load
負荷

Z
Ｚ

×
X
[Alarmoutput][警報出力]

Power
電源

Buffer relay
バッファリレー～

Generally, as a contact protection element, a CR combined element is used for AC power, and a diode isused for DC power.

19

5.5 Connection of Setting Terminals
WARNING(1) To prevent accidents, be sure to turn this instrument off before proceeding to thefollowing operations.
(2) The connection should be performed by personnel with sufficient knowledge andpractical experience of wiring work.

1) Control input signal only
Current signal (4-20mADC)
4-20mADC

Voltage signal (1-5VDC)
1-5VDC

16
17

Controller

Contact input signal (High-limit/low-limit setting units are connected.

16

H
C
L

17
Controller

18

18

19

19

20

20

3
2
1

3
2
1

2
20
1

Low-limit setting unit High-limit setting unit
Variable resistor (10k ) Variable resistor (10k )• Setting units: Low-limit value<High-limit value
2) Manual setting unit with auto/manual switching 3) Manual setting unit only
Current signal (4-20mA DC)
Manual setting unit only
4-20mA DC

16
17

Controller

18
2Manual setting unit
AUTO

3

19
20

2

Manual setting unit

MAN

1

3

2

2

20

1

1

Variable resistor (10k )1

Variable resistor (10k )4) With slope setting unit (Slope using control input signal)
Current signal (4-20mA DC)
4-20mADC

5) With slope setting unit [Slope using remote setting input (AI1)]
Current signal (4-20mA DC)
4-20mADC

16
17

Controller

18

17
Controller

18

Slope setting unit

3

19

2

20

1

1

16

19
Voltage output unit *20
20-2.5V corresponds

Variable resistor (10k )to 0-100%.

31(PLC, etc.)

Use the two short circuit plates provided for connections between (16) and (17) (or between 17 and 18), andbetween (19) and (20), as required. Be sure to check the terminal numbers when connecting them.
* When connecting voltage output units to the remote setting inputs (AI1 to AI3), it is necessary to isolate each
output from the voltage output units when plural PA-3000-H3 units are connected.
In addition, the output from one voltage output unit cannot be connected to plural PA-3000-H3 units in parallel.
206) With elevation setting unit (Elevation using remote setting input )7) Manual, slope setting units & Auto/Manual switching

Current signal (4-20mADC)
4-20mADC

Current signal (4-20mADC)
4-20mADC

17

17
Controller

16

16
Controller

18

Slope setting unit

19

3

Elevation

20

3

2

2

4

1

1

18
19

2

AUTO

1
Variable resistor (10k )

20

MAN

1

Manual setting unit

1

Variable resistor (10k )2
3

2

Variable resistor (10k )8) Operation of multiple instruments
Current signal (4-20mADC)

Voltage signal (1-5VDC)

4-20mADC

Controller

1-5VDC
16

16

16

17

17

17

18

18

18

19

19

19

20

20

20

Controller

16

16

16

17

17

17

18

18

18

19

19

19

20

20

20

Connectable numbers of the PA-3000-H3 units for plural-unit operation are limited depending on the output capacity of acontroller.

CAUTION(1) After completing all connections, be sure to reattach the setting terminal cover.
(2) The internal circuitry may be destroyed if an over-current or over-voltage is applied tothe control input signal terminal. Be careful when applying a signal to this terminal.

21

6 PARAMETER SETTING
6.1 Front Panel
Status display

Trimmers SET1 to SET6

Dip SW1
Dip SW2
Adjust each trimmer by turning it slowly using athin flat screwdriver.
Also, use the same screwdriver for switching
the Dip switches.
The Dip switch is ON in an up position and OFF
in the down position.

Trimmers SET7 to SET9

[Functions of the SET trimmers]
SET trimmers
SET1 trimmer
SET2 trimmer
SET3 trimmer
SET4 trimmer
SET5 trimmer
SET6 trimmer
SET7 trimmer
SET8 trimmer
SET9 trimmer

Function
Slope
Elevation
Soft Start

Setting range

Default (Factory set)

0 to 100%
0 to 100%

0 to 100%

100% (Full clockwise)
0% (Full counterclockwise)
Approx. 1 sec.
(Full counterclockwise)
100% (Full clockwise)

10 to 100%

100% (Full clockwise)

1 to 40%40% (Full clockwise)

60 to 140%

Approx. 100% (Center)-40 to +40%

Approx. 0% (Center)-40 to +40%

Approx. 0% (Center)

Approx. 1 to 20 sec.

Current Limit
Ratio of heater
disconnection alarm
Imbalance ratio of
imbalance alarm
Output gain of imbalanceadjustment
V phase output of
imbalance adjustment
W phase output of
imbalance adjustment

The scales of the trimmers are given as approximate references. Even when a trimmer is set to the center
position, the set value is not always the center value of the setting range (it is nevertheless approximately thecenter value).
Each trimmer has a dead band near the fully counterclockwise and fully clockwise positions. A position slightly
before the fully counterclockwise or fully clockwise position becomes the low or high limit value of the setting
range.
22

6.2 Slope(1) Selecting the setting method
・The slope (Slope A) can be set either with the front panel setting (SET1 trimmer) or the remote setting input(AI1) as shown in the following table.
・When the slope setting (Slope B) [Setting terminals (19), (20) and (1)] using the control input signal is used, it is
not necessary to set this item.
Setting terminals (6) to (9)(DI3) setting[Setting type (front/ remote) switching]

Setting method

Dip SW2 No. 3[DI3 logical switching]

Dip SW2 No. 4[AI1 individual selection]

Open
OFF
Any position
Short
ON
Any position
When the remote setting
Open
ON
ON
input is used (AI1)
Short
OFF
ON
(Example) To use the front panel setting (SET1 trimmer) only when the setting terminals (6) and (9) (DI3) areshort-circuited, turn on the No. 3 and No. 4 of the Dip SW2.
When the front panel setting
is used (SET1 trimmer)[Reference] Flowchart for the slope (Slope A) setting method selection
Setting of remotecontact input [DI3]69(The logic of DI3 is switchedby No. 3 of SW2.)
When setting type (DI3) is[front panel setting][DI3=Open (SW2No.3=OFF)][DI3=Short (SW2 No.3 = ON)]

When setting type (DI3) is[remote setting input][DI3 =Short (SW2 No.3 = OFF)][DI3 =Open (SW2 No.3 = ON)]

Setting of [Dip SW2
No.4] of front panel

Setting source of [slope(Slope A)] adopted

Front panel setting has priority.

Individual selection of remotesetting input: When [slope] isset by [front panel setting][SW2 No.4 = OFF]
Individual selection of remotesetting input: When [slope] is set
by [remote setting input][SW2 No.4 = ON]

Front panelsetting[SET1]
trimmer

Remotesetting input
[AI1]

2
3
1

(2) Setting (SET1 trimmer) on the front panel• The setting values on the front panel setting (SET1 trimmer) become 0% at the fully counterclockwise position
and 100% at the fully clockwise position.
• Turn the trimmer with a thin flat screwdriver while monitoring the output to adjust to the desired value.
• The default value of the front panel setting (SET1 trimmer) is 100%.
(3) Setting (AI1) using the remote setting input• Adjust the remote setting unit while monitoring the output to adjust to the desired setting value.
• The setting value becomes 0% at 0V of the voltage applied between the setting terminals (3) and (1) andbecomes 100% at 2.5V.
OUT

Remote19(4) Alternative setting method (Slope using the control input signal = Slope B)
INsettingunit
20• The slope (Slope B) using the control input signal can also be set by(10k )
1
inserting a remote setting unit between the control signal output(OUT) terminal (19) and control signal input (IN) terminal (20). (Right
diagram)• The slope (Slope B) using the control input signal becomes effective despite the slope setting selection [Ref. (1)].
• When the slope (Slope B) using the control input signal is not used, short-circuit terminals (19) and (20).

The final slope setting value is the product of the slope setting (Slope A) set by either [Front panel setting (SET1
trimmer)] or [Remote setting input (AI1)] and [Slope using the control input signal (Slope B)].
(Example) Final slope setting value =Slope A X Slope B = 0.50 (50%) X 0.80 (80%) = 0.40 (40%)

23

6.3 Elevation(1) Selecting the setting method• The elevation can be set either with the front panel setting (SET2 trimmer) or the remote setting input (AI2) asshown in the following table.
Setting method

Setting terminals (6) to (9)(DI3) setting[Setting type (front/ remote) switching]

Dip SW2 No. 3[DI3 logical switching][AI2 individual selection]

Open
Short
Open
Short

OFF
ON
ON
OFF

Any position
Any position
ON
ON

When the front panel setting
is used (SET2 trimmer)
When the remote setting
input is used (AI2)

Dip SW2 No. 5(Example) To use the front panel setting (SET2 trimmer) only when the setting terminals (6) and (9) (DI3) areshort-circuited, turn on No. 3 and No. 5 of the Dip SW2.

[Reference] Flowchart for the elevation setting method selection
Setting of remotecontact input [DI3]69(The logic of DI3 is switchedby No. 3 of SW2.)
When setting type (DI3) is[front panel setting][DI3=Open (SW2No.3=OFF)][DI3=Short (SW2 No.3 = ON)]

When setting type (DI3) is[remote setting input][DI3 =Short (SW2 No.3 = OFF)][DI3 =Open (SW2 No.3 = ON)]

Setting of [Dip SW2
No.5] of front panel

Setting source of[elevation] adopted

Front panel setting has priority.

Individual selection of remotesetting input: When [elevation]is set by [front panel setting][SW2 No.5 = OFF]
Individual selection of remotesetting input: When [elevation] is
set by [remote setting input][SW2 No.5 = ON]

Front panelsetting[SET2]
trimmer

Remotesetting input
[AI2]

2
4
1

(2) Setting (SET2 trimmer) on the front panel• The setting values on the front panel setting (SET2 trimmer) become 0% at the fully counterclockwise position
and 100% at the fully clockwise position.
• Turn the trimmer with a thin flat screwdriver while monitoring the output to adjust to the desired value.
• The default value of the front panel setting (SET2 trimmer) is 0%.
(3) Setting (AI2) using the remote setting input• Adjust the remote setting unit while monitoring the output to adjust to the desired value.
• The setting value becomes 0% at 0V, and 100% at 2.5V of the voltage applied between setting terminals (4)and (1).

6.4 Soft Start(1) Setting value• The setting values on the front panel setting (SET3 trimmer) become approx. 1 second at the fully
counterclockwise position, and approx. 20 seconds at the fully clockwise position.
• The default value of the front panel setting (SET3 trimmer) is approx. 1 second.
(2) Note• When all control SVs are changed, the output (actually the internal SV used in computational processing) ischanged gradually according to this setting.

24

6.5 Current Limit(1) Selecting the setting method• The current limit can be set either with the front panel setting (SET4 trimmer) or the remote setting input (AI3)as shown in the following table.
Setting terminals (6) to (9)Setting of (DI3)[Setting type (front/ remote) switching

Setting method

Dip SW2 No. 3[DI3 logical switching]

Dip SW2 No. 6[AI3 individual selection]

Open
OFF
Any position
Short
ON
Any position
When the remote setting
Open
ON
ON
input is used (AI3)
Short
OFF
ON
(Example) To use the front panel setting (SET4 trimmer) only when the setting terminals (6) and (9) (DI3) areshort-circuited, turn on No. 3 and No. 6 of the Dip SW2.
When the front panel setting
is used (SET4 trimmer)[Reference] Flowchart for the current limit value setting method selection
Setting of remotecontact input [DI3]69(The logic of DI3 is switchedby No. 3 of SW2.
When setting type (DI3) is[front panel setting][DI3=Open (SW2No.3=OFF)][DI3=Short (SW2 No.3 = ON)]

When setting type (DI3) is[remote setting input][DI3 =Short (SW2 No.3 = OFF)][DI3 =Open (SW2 No.3 = ON)]

Setting of [SW2No.6] of front panel
Dip switch

Setting source of [current
limit value] adopted

Front panel setting has priority.

Individual selection of remotesetting input: When [current limit]
is set by [front panel setting][SW2 No.6 = OFF]
Individual selection of remotesetting input: When [current limit]
is set by [remote setting input][SW2 No.6 = ON]

Front panelsetting[SET4]
trimmer

Remotesetting input
[AI3]

2
5
1

(2) Setting (SET4 trimmer) on the front panel• The setting values of the front panel setting (SET4 trimmer) become 0% at the fully counterclockwise position
and 100% at the fully clockwise position.
• Turn the trimmer with a thin flat screwdriver while monitoring the output to adjust to the desired value.
• The default value of the front panel setting (SET4 trimmer) is 100%.
(3) Setting (AI3) using the remote setting input• Adjust the remote setting unit while monitoring the output to adjust to the desired value.
• The setting value becomes 0% at 0V, and 100% at 2.5V of the voltage applied between setting terminals (5)and (1).
(4) Activating the function• After completing the setting, turn on the front panel setting (Dip SW1 No. 1) to activate the current limit.
(5) Note• This function cannot be used with the zero-cross control.
• A CT is needed for using the current limit. Connect a CT matching the rated current.
• The current value used for assessment is the average value of the three-phase load current values. Thisfunction cannot be applied to an individual phase.

25

6.6 Heater Disconnection Alarm(1) Preparation• Enter the SV (desired value) used in normal control and run this instrument until the control stabilizes.
The load current must be 10% or more of the rated current.
(2) Storing the initial resistance• When the load current is stabilized, set the front panel setting (Dip SW1 No. 3) to ON to store the initialresistance value in memory.
• When the initial resistance value is stored normally, “EV1” in the status display on the front panel flashes for a
few seconds.
If “EV1” does not flash, the load current is too low to calculate the resistance value. Be sure to set the load
current in the normal control range before retrying the storage operation.
• When “EV1” flashes after the switch is set to ON, immediately set the switch to OFF. Make sure to set it to OFF.
(3) Ratio setting• Set the disconnection ratio using the following formula.
Ratio = { (Disconnection detection target resistance – Initial resistance) ÷ Initial resistance } × 100• The setting values on the front panel setting (SET5 trimmer) become 10% at the fully counterclockwise
position and 100% at the fully clockwise position.
• The default value of the front panel setting (SET5 trimmer) is 100%.
(4) Activating the function• After completing the setting, set the front panel setting (Dip SW1 No. 2) to ON to activate the heater
disconnection alarm.
(5) Note• The load resistance value is not the resistance of the heater alone, but represents the approximate
synthesized resistance between phases. This means that it does not allow the user to identify deterioration or
disconnection of the heater, and it can be used only as reference information.
• Do not apply this function to a heater, of which heater resistance varies significantly (such as a silicone carbide
SiC heater). Otherwise, erroneous alarms may activate.
• A CT is needed for assessment of heater disconnection. Connect a CT matching the rated current.
• A dead band (a delay time of approx. 2 min.) is provided for alarm OFF assessment.
• The initial resistance value should be stored while the load current is within the normal control range.
• After storing the initial resistance value, be sure to return the Dip switch to OFF.
• Activation of the heater disconnection alarm is started by totalizing the period in which the output (actually theinternal SV used in computational processing) exceeds 10% or more and when the total period exceeds thedetection period (Default: 1 minute).
• The alarm assessment is not performed when this instrument stops running.

6.7 Imbalance Adjustment
6.7.1 Outline
The imbalance adjustment function is used to adjust an imbalanced status to a balanced status. The
adjustment is possible within a limited range based on either the voltage or current value.
First, select the voltage or current according to the control system. Then set No. 7 of the Dip SW1 to ON to
activate the imbalance adjustment function, and adjust it using the following three trimmers.
• SET7 trimmer: Output gain. The adjustment range is from 60% at the fully counterclockwise (decrease direction)
position to 140% at the fully clockwise (increase direction) position. The default value is 100%.
• SET8 trimmer: V phase output timing. The adjustment range is from -40% at the fully counterclockwise (decrease
direction) position to 40% at the fully clockwise (increase direction) position. The default value is 0%.
• SET9 trimmer: W phase output timing. The adjustment range is from -40% at the fully counterclockwise (decrease
direction) position to 40% at the fully clockwise (increase direction) position. The default value is 0%.
* The adjustment range is the output timing and differs from the adjustment ranges of the actual output voltage and current.

WARNINGTo prevent an accident, turn this instrument off before connecting a voltmeter or ammeter.

CAUTION(1)Adjust the adjustment trimmers by turning them slowly while monitoring the measured value.
(2) When an adjustment trimmer is turned, the over-current alarm or rapid-break fusemeltdown alarm may activate due to the change of output.
(3)After the adjustment, be careful not to turn any adjustment trimmers during normal use.
26

6.7.2 Imbalance adjustment with voltage(1) Preparation• Connect three RMS type measuring units between each phase to measure the voltage values (U2-V2,
V2-W2, W2-U2) between each phase.
• Turn this instrument ON, enter the SV (desired value) used in normal control, and run this instrument until thecontrol stabilizes.
• Set the SET7, SET8 and SET9 trimmers to the center positions.
(2) Activating the function• Set the front panel setting (Dip SW1 No. 7) to ON to activate the imbalance adjustment.
(3) Output gain adjustment 1• After the output has stabilized, reduce the outputs of the three phases by about 10% to ensure the safety ofadjustment.
• Turn the SET7 trimmer (output gain) slowly counterclockwise while monitoring the voltage values on themeasuring units so that the highest voltage values in the three phases is about –10% of the voltage value
corresponding to the SV.
(4) Imbalance adjustment• While monitoring the voltage values on the measuring units, turn the SET8 trimmer (V phase output timing)and SET9 trimmer (W phase output timing) slowly and alternately so that the voltage values of the threephases are almost the same.
(5) Output gain adjustment 2• When the voltage values of the three phases are almost same, turn the SET7 trimmer (output gain) slowly
clockwise so that the voltage value of each phase becomes the voltage value corresponding to the SV (desired
value).
• Fine-adjust the SET8 trimmer (V phase output timing) and SET9 trimmer (W phase output timing) as required.
(6) Note• Using the RMS type measuring units (3 units), adjust voltage values by monitoring the measured values they
display.
• This function cannot be used with the zero-cross control.

6.7.3 Imbalance adjustment with current(1) Preparation• Connect three RMS type measuring units between each phase to measure the current values (U2, V2, W2)
between each phase.
• Turn this instrument ON, enter the SV (desired value) used in normal control, and run this instrument until thecontrol stabilizes.
• Set the SET7, SET8 and SET9 trimmers to the center positions.
(2) Activating the function• Set the front panel setting (Dip SW1 No. 7) to ON to activate the imbalance adjustment.
(3) Output gain adjustment 1• After the output has stabilized, reduce the outputs of the three phases by about 10% to ensure the safety ofadjustment.
• Turn the SET7 trimmer (output gain) slowly counterclockwise while monitoring the current values on themeasuring units so that the highest current values in the three phases is about –10% of the current value
corresponding to the SV (desired value).
(4) Imbalance adjustment• While monitoring the current values on the measuring units, turn the SET8 trimmer (V phase output timing)and SET9 trimmer (W phase output timing) slowly and alternately so that the current values of the threephases are almost the same.
(5) Output gain adjustment 2• When the current values of the three phases are almost the same, turn the SET7 trimmer (output gain) slowly
clockwise so that the current value of each phase becomes the current value corresponding to the SV(desired value).
• Fine-adjust the SET8 trimmer (V phase output timing) and SET9 trimmer (W phase output timing) as required.
(6) Note• Using the RMS type measuring unit (3 units), adjust current values by monitoring the measured values they
display.
• This function cannot be used with the zero-cross control.
• Connect a CT matching the rated current.
27

6.8 Imbalance Alarm(1) Preparation• Enter the SV (desired value) used in normal control, and run this instrument until the control stabilizes.
The load current must be 10% or more of the rated current.
• When the load current stabilizes, perform imbalance adjustment if necessary.
(2) Rate setting• Calculate and set the value (imbalance ratio) with the following formula.
Imbalance rate = { (Load current max value - Load current min value) ÷ Load current max value } × 100* Load current max value: Maximum value among the load current values of three-phase (U-phase, V-phase, W-phase)* Load current min value: Minimum value among the load current values of three-phase (U-phase, V-phase, W-phase)• The setting values on the front panel setting (SET6 trimmer) become 1% at the fully counterclockwise position
and 40% at the fully clockwise position.
• The default value of the front panel setting (SET6 trimmer) is 40%.
(3) Activating the function• After completing the setting, set the front panel setting (Dip SW1 No. 4) to ON to activate the imbalance alarmfunction.
(4) Note• This function assesses the imbalance rate of the load current.
• This function cannot be used with the zero-cross control.
• A CT is needed for the assessment of the imbalance rate. Connect a CT matching the rated current.
• A dead band (a delay time of approx. 2 min.) is provided for assessment of alarm OFF.
• Activation of the imbalance alarm is started by totalizing the period in which the output (actually the internal SV
used in computational processing) exceeds 10% or more and when the total period exceeds the detection
period (Default: 1 minute).
• The alarm assessment is not performed when this instrument stops running.

6.9 Alarm Output Forced OFF
When the alarm activates, AL1 or AL2 is turned on as an alarm output. It is possible to turn it off manually.
In addition, AL3 is turned off at the alarm activation, but it is possible to force it on.
(1) Setting• The alarm output relays for AL1 and AL2 are set to OFF when the front panel setting (Dip SW 1 No. 5) is set to
ON. In addition, the alarm output relay for AL3 is set to ON.
• The alarm output relays for AL1 and AL2 are not set to ON until the front panel setting (Dip SW 1 No. 5) is set
to OFF. In addition, the alarm output relay for AL3 is not set to OFF.
(2) Note• Even when the alarm output is forced to OFF, the status LED display on the front panel indicates the alarm
activation.
• During the initial operation (period until the normal start-up is executed) at the start-up, the alarm output relay
for AL3 is turned OFF even when the alarm output is forced to OFF.

6.10 Feedback Control OFF
In the case of instruments with the feedback control specification, the feedback control function can be forced
to OFF.
(1) Setting• The feedback control function is disabled when the front panel setting (Dip SW 1 No. 6) is set to ON.
(2) Note• This function is not available with models with no-feedback specification or zero-cross control specification.
• If this function is switched during operation, the output (actually the internal SV used in computational
processing) starts from 0%. (This instrument resets.)• When this function is executed, the alarm output relay for AL3 is turned OFF temporarily.
(When this instrument starts up normally after resetting, the alarm output relay for AL3 is turned ON again.)28

6.11 Dip switch Functions
There are two Dip switches for various settings on the front panel. Set them as required.
1. Dip SW1
No.

Function

1
2

Current limit ON/OFF. By switching to ON, the current limit activates.
Heater disconnection alarm ON/OFF. By switching to ON, the heater disconnection alarm activates.
Storage of the initial resistance value for heater disconnection alarm. By switching to ON, the initialresistance is stored 1 time only.
• Be sure to set the switch to OFF in normal running and after value is stored.
Imbalance alarm ON/OFF. By switching to ON, the imbalance alarm activates.
Alarm output forced OFF. By switching to ON, the alarm output forced OFF activates.
Feedback control ON/OFF. By switching to ON, the feedback control becomes “disabled”.
Imbalance adjustment ON/OFF. By switching to ON, the imbalance adjustment activates.
Initialization. When the power is supplied to this instrument, the initialization of setting values activates.
(The internal memory of this instrument is reset to the factory default.)• Be sure to set the switch to OFF in normal running and after initialization.

3
4
5
6
7
8

Default(Factory set)
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

2. Dip SW2
No.

1

2

3

4

5

6

7
8

Default(Factory set)

Function
Logical switching of remote contact input 1 (DI1) setting terminals (6) and (7) (Run/Stop)
SW2 (No.1) and remote contact input 1 (DI1) status
Operation mode
SW2 (OFF), remote contact input (Open)Run
SW2 (OFF), remote contact input (Short)Stop
SW2 (ON), remote contact input (Open)Stop
SW2 (ON), remote contact input (Short)
Run
Logical switching of remote contact input 2 (DI2) setting terminals (6) and (8) (Phase/Zero-cross)
SW2 (No.2) and remote contact input 2 (DI2) status
Operation mode
SW2 (OFF), remote contact input (Open)
Phase angle control
SW2 (OFF), remote contact input (Short)
Zero-cross control
SW2 (ON), remote contact input (Open)
Zero-cross control
SW2 (ON), remote contact input (Short)Phase angle control* The control system cannot be switched with the zero-cross control type.
Logical switching of remote contact input 3 (DI3) setting terminals (6) and (9) (Front panel/Remote setting input)
SW2 (No.3) and remote contact input 3 (DI3) status
Selection *SW2 (OFF), remote contact input (Open)
Front panel setting (SET trimmer)
SW2 (OFF), remote contact input (Short)
Remote setting input (AI)SW2 (ON), remote contact input (Open)
Remote setting input (AI)SW2 (ON), remote contact input (Short)
Front panel setting (SET trimmer)
Individual selection of remote setting input (AI1): Slope
SW2 (No.4) status
Selection
SW2 (ON)
Remote setting input (AI1)SW2 (OFF)
Front panel setting (SET1 trimmer)
Individual selection of remote setting input (AI2): Elevation
SW2 (No. 5) status
Selection
SW2 (ON)
Remote setting input (AI2)SW2 (OFF)
Front panel setting (SET2 trimmer)
Individual selection of remote setting input (AI3): Current limit
SW2 (No. 6) status
Selection
SW2 (ON)
Remote setting input (AI3)SW2 (OFF)
Front panel setting (SET4 trimmer)
Selection of supply voltage for actual use
Selection

To prevent malfunction, do not selectthe switch status of “Not used.”
240V/Not used
220V/440V
200V/400V
Not used/380V

SW2 (No.7, No.8) status
No.7 (ON), No.8 (ON)No.7 (ON), No.8 (OFF)No.7 (OFF),No.8 (ON)No.7 (OFF), No.8 (OFF)

OFF

OFF

OFF

OFF

OFF

OFF

No.7: OFF
No.8: ON
200V line:
200V
400V line:
400V* When the selection state of SW2 No. 3 and the remote contact input 3 (DI3) is by [Front panel setting (SET
trimmer)], the slope, elevation and current limit are set by the front panel setting regardless of No.4, No.5 andNo.6 settings of SW2.
29

7 Running
7.1 Check before Running(1) To prevent an accident, be sure to turn this instrument off before proceeding to thefollowing operations.
WARNING(2) The withstand voltage test should be performed by personnel with sufficientknowledge and practical experience of such testing.
1. Checking the installation orientation
Check that this instrument is installed with the UP (↑) mark facing upward. Otherwise, the heat radiation effectwill be hindered, and the rise in internal temperature may cause malfunction.
2. Checking the connections
Check if wiring is correct, the short circuit plates are connected properly, the connections are secure, etc.
Particularly, check if the main circuit terminals such as the power supply terminals are securely tightened.
This instrument and peripheral equipment (such as the transformer) might be damaged in the case of
non-load running. Check that the load is connected before running.
3. Checking the balanced status
Check that the power voltages between each phase and loads between each phase are balanced. If they are
too imbalanced, errors in the input/output characteristics of this instrument will increase, deteriorating control.
4. Checking the power voltage and load capacity
Check once again that the power voltage and load capacity are appropriate for the ratings of this instrument.
5. Checking the insulation
Check the insulation of the load circuit as required. Use a 500V megger for the measurement of insulation
resistance.
When performing the withstand voltage test, short-circuit all of “U1 and U2,” “V1 and V2” and “W1 and W2” ofthe main circuit terminals. As the withstand voltage test could degrade this instrument and injure the test
personnel, it should be conducted with the minimum required voltage. The test voltage must be lower than
1500VAC.
6. Setting the power voltage
Set the Dip SW2 on the front panel to set the power voltage of actual use as shown below.
Check the rated voltage of the
Set Nos. 7 and 8 of SW2 according to the actual power voltage.
PA-3000-H3 and the actual power
voltage.
200 V
Set No. 7 to “OFF” and No. 8 to “ON”.
Power voltage 200V
220 V
Set No. 7 to “ON” and No. 8 to “OFF”
240 V
Set No. 7 to “ON” and No. 8 to “ON”
380 V
Set No. 7 to “OFF” and No. 8 to “OFF ”
Power voltage 400V
400 V
Set No. 7 to “OFF” and No. 8 to “ON”
440 V
Set No. 7 to “ON” and No. 8 to “OFF”
7. Checking the control system and parameter settings
Check the control system (phase angle control, zero-cross control, feedback, etc.) and the parameters set on
the front panel.
8. Other checking
Check other items by reading warnings and cautions described in this instruction manual.

30

7.2 Start of Operation

WARNING(1) Do not approach the terminals (main circuit terminals and setting terminals) of this
instrument. Electric shock due to the high-voltage parts is hazardous to human life.
(2) This instrument has high-temperature parts. Particularly, do not touch the top panel,side panels, heat radiation fins, etc.
(3) Do not allow a finger, stick or any object to enter or drop into the cooling fan area. The
cooling fan(s) are rotating at a high speed and may cause injury or damage.

1. Turn the system ON. If possible, set the manual run or control input signal to 0% so that this instrument
maintains the 0% output when it is turned ON.
2. Check that the system components including this instrument are in working order. Also, check that all of theconnected signal levels (voltages, current, ON/OFF signals, etc.) are normal.
When your instrument comes with a built-in cooling fan, check that the cooling fan rotates normally.
3. Check that the power voltages between each phase and loads between each phase are balanced.
4. Switch to the auto run (or keep manual run), start the control and observe the operation.
5. There is no problem when the control is stable. If it is unstable, adjust the controller’s parameters (particularly
the PID constants) and this instrument’s parameters (particularly the slope).
6. Set the parameters as required.
7. In a few hours after the start of operation, check again that the system components including this instrument
are normal.
8. When stable control is established, it is recommended to record (save) the settings including those of this
instrument.

CAUTION(1) Never run this instrument without load. Non-load running may result in damage to this
instrument and/or peripheral equipment (such as the transformer).
(2) Check the signals of the peripheral equipment connected to this instrument. Applying
an over-voltage or over-current may damage the internal circuitry of this instrument.
(3) Never switch the load (switching the load connection by a relay, a magnet, etc.). The
switching of load may result in damage to this instrument and/or peripheral equipment.

31

7.3 Status Display
Whilst running, the EV (Event) indicators of status display on the front panel indicate various Events & otherstatus including running status and alarm activation status.
Status display

Trimmers SET1 to SET6

Dip switch SW1
Dip switch SW2

Trimmers SET7 to SET9

Front panel
No.
EV1(Green)

EV2
(Red)
EV3
(Red)
EV4
(Red)
EV5
(Red)

EV6
(Red)
EV7
(Green)EV8(Green)EV9(Green)Description
This indicates running status. Lights for normal running, and flashes when the running becomesabnormal.
The indicator also flashes in the following cases.
(1) When the setting values are initialized (the internal memory is reset to the factory default);→ Stops flashing after the initialization of setting values is completed.
(2) If No. 8 of the Dip SW1 is set to ON when power-on (initialization of setting values);→ Be sure to set the Dip switch to OFF.
(3) During storage of the initial resistance value for the heater disconnection alarm;→ Starts flashing after the start of storage, and stops flashing after a few seconds.
Lights when the over-current alarm is activated, and flashes when the heater disconnection alarm isactivated.
Lights when the rapid-break fuse meltdown alarm is activated, and flashes when the abnormality
alarm for the thyristor element is activated.
Lights when the overheating abnormality alarm for the heat radiation fin is activated.
Lights when the phase-sequence abnormality alarm is activated, and flashes when the open-phasedetection alarm is activated.
Note: For these 2 alarms above and frequency abnormality alarm, definite
determination/discrimination of alarm status cannot be performed. Use them for your reference.
When any one of these alarms is ON, check the phase-sequence abnormality, the open-phase or
the frequency abnormality.
Lights when the frequency abnormality alarm is activated, and flashes when the imbalance alarm isactivated.
Interlocks with EV2 to EV6 and provides the display-by-phase “U (U-V)” showing the applicable
phase.
Interlocks with EV2 to EV6 and provides the display-by-phase “V (V-W)” showing the applicable
phase.
Interlocks with EV2 to EV6 and provides the display-by-phase “W (W-U)” showing the applicable
phase.

CAUTION• When multiple alarms activate simultaneously, the alarm types may not be determined
due to overlapped lighting of the EV indicators. The display-by-phase may also not be
performed. Furthermore, when the display-by-phase is performed, certain
display-by-phase indications may not be discernible.
• All status display indicators light temporarily when this instrument is turned ON or thecontrol system is switched.

32

8 ALARM
8.1 Alarm Activation and Alarm Output
Alarm nameOver-current alarm
Rapid-break fusemeltdown alarm
Radiation fin overheat
alarm
Heater disconnection
alarm
Thyristor element
abnormality alarm
Running abnormality
alarm

Status display• EV2 lights and one of EV7 to EV9 lights to indicate the phase in alarm.
• In case of the over-current alarm, even when the current value has returned within
the rated current range after the alarm activation, the alarm cannot be cancelleduntil this instrument is turned off then on. (Latched output)• EV3 lights and one of EV7 to EV9 lights to indicate the phase in alarm.
• This alarm activates only in the instrument with the rapid-break fuse.
• EV4 lights.
• EV2 flashes and one of EV7 to EV9 lights to indicate the phase in alarm.
• EV3 flashes and one of EV7 to EV9 lights to indicate the phase in alarm.
• EV1 flashes.
• This alarm is cancelled automatically in about 1 minute after the alarm
activation. It can also be cancelled by turning this instrument off then on.
• EV5 lights.

Alarm output
AL1
AL1
AL1
AL2
AL2
None

Phase-sequence
AL3
abnormalities alarm
Open-phase alarm• EV5 flashes and one of EV7 to EV9 lights to indicate the phase in alarm.
AL3
Imbalance alarm• EV6 flashes and one of EV7 to EV9 lights to indicate the phase in alarm.
AL2
Frequency abnormality • EV6 lights.
AL3
alarm
* Even when the alarm outputs are OFF, they may be turned ON momentarily when this instrument is turned OFF/ON. If
required, take countermeasures externally against such error outputs.
* The alarm output relay for AL3 is turned OFF during the initial operation (period until the normal start-up is executed) at
the start-up. The relay is turned ON after the normal start-up, and it is turned OFF when the alarm for phase-sequenceabnormality, the open-phase or a frequency abnormality is activated.

8.2 Alarms and Countermeasures
Alarm name

Running status

Over-current alarm

Running stops.
(Thyristor gate OFF)

Rapid-break fusemeltdown alarm

Running stops.
(Thyristor gate OFF)

Radiation fin overheat
alarm

Running stops.
(Thyristor gate OFF)

Heater disconnection
alarm

Running continues.

Thyristor element
abnormality alarm
Running abnormality
alarm

Running continues.
Running continues.

Phase-sequenceabnormalities alarm

Running stops.
(Thyristor gate OFF)

Open-phase alarm

Running stops.
(Thyristor gate OFF)

Imbalance alarm

Running continues.

Frequency abnormality
alarm

Running stops.
(Thyristor gate OFF)Countermeasures
Turn this instrument OFF, identify the cause and take countermeasuresagainst it, and then turn this instrument ON again. This instrument will
recover.
Turn this instrument OFF, identify the cause and replace the fuse, andthen turn this instrument ON again. This instrument will recover.
Check that the cooling fan(s) of the power controller is rotating normallyand that the ambient temperature is not abnormally high, and then turnthis instrument ON again.
If the fan(s) is malfunctioning, turn this instrument OFF, replace thefan(s) and turn this instrument ON again. This instrument will recover.
Turn this instrument OFF and check the heater, etc.
This alarm may also activate when the CT is not connected to the power
controller.
Turn this instrument OFF and check the load and connections. If it still
does not recover, repair of this instrument is required.
Turn this instrument OFF then ON again. If it still does not recover, repairof this instrument is required.
The connections of the three phases (U, V, W) are not correct. Turn this
instrument OFF and correct the connections, and then turn this
instrument ON again. This instrument will recover.
One of the connections of the three phases (U, V, W) is disconnected:
Turn this instrument OFF and correct the connections, and then turn this
instrument ON again. This instrument will recover.
Turn this instrument OFF and check the power voltage, load, heater, etc.
Turn this instrument OFF and check the power voltage, noise, etc.
Especially, in case of an abnormal voltage waveform by noise, thecorrect control cannot be performed. Take appropriate countermeasuresagainst it.

33

9 SYSTEM PROTECTION
9.1 Power safety
To protect this instrument from abnormal voltage (surge voltage) superimposed in the power, install a lightning rod
or spark killer at the power source. The following lightning rods and spark killer are recommended.
 Lightning rod 200V power line : MAK2-220 [M-system Co., Ltd.] Lightning rod 400V power line : MAK2-400 [M-system Co., Ltd.] Spark killer: 3CRH-50270 [Okaya Electric Industries Co., Ltd.]

9.2 Protection by alarm output 3
The alarm output 3 (AL3) is mainly for power related alarms. (The alarm output relay is turned OFF at the alarms
activation.)
When this instrument has a fatal malfunction (burnout, etc.), alarm output 3 will usually go OFF. Specifically,
alarm output 3 is turned OFF when the following problems occur in this instrument.
(1) Melting of the fuse for the receiving board of R-phase or S-phase → Control circuit power OFF → Alarm output 3 OFF(2) Melting of the fuse for the receiving board of T-phase → W-phase open-phase occurrence → Alarm output 3 OFF(3) Synchronizing transformer disconnection → Phase-sequence abnormality occurrence → Alarm output 3 OFF(4) Synchronizing signal input portion burnout →Control circuit power OFF/Open-phase occurrence/phase-sequenceabnormality occurrence → Alarm output 3 OFF• Fuse for receiving board: This is for protecting the synchronizing signal input portion (control circuit power
input portion), and is built -in for models with a rated current of 75A or more.
• Synchronizing transformer: For detecting the timing of the zero-cross of power.
We recommend that you will take measures, using the above, to avoid widespread system damage or serious malfunction.
The following figure shows a wiring example of system using the alarm output 3.
Do not connect
the secondary
Magnet contactor
Setting terminals (CT)side of the CT to
PA-3000-3H
21 22 23 24 25 26
Breakerground.
3-phasepower SW1CT

K L K L K L

SW2Main circuit
terminals

Lightning rod

R

U1

U2

K

Load transformer

L

R1

CT1
SA1
SA2

S

V1

V2

K

TR2

L

R2 R3

CT2
SA3

T

K

W1

Spark
killer

PLC1

PLC

CT3

SA4
SA5
SA6

CR1

Protective
conductor (ground)

DI1

Contact

AL1

Contact

AL2

Contact

AL3

Contact

L

W2

Dummy resistor

Setting
terminals

7
6
13
28 16
14 17
29 18
15 19
30 20

4 ~ 20mA

Wiring example of system using alarm output 3

34

Controller

LOAD

The following are details of components of the wiring example shown in Sec. 9.2.
Mark
PA-3000-H3

Name
Power controller

PLC1

PLC

SW1

Breaker

SW2

Magnet conductor

CR1

Spark killer

SA1~SA3

Lightning rod

SA4~SA6

Lightning rod

CT1~CT3

Current transformer

R1~R3

Dummy resistor

TR2

Load transformer

LOAD

Load (Heater)

OutlineThis instrument
Monitors any abnormality of this instrument and protects the whole system by turning off themagnet conductor when an abnormality occurs.
This is a breaker for protecting the whole system.
Separates the system from the power source when a system abnormality occurs.
Conductor ON/OFF is controlled by the PLC.
Protects this instrument from abnormal voltage (surge voltage) superimposed in the power.
Protects this instrument from abnormal voltage (surge voltage) superimposed in the power.
Make sure to install a lightning rod for external transformer specifications.
Protects this instrument from an abnormal voltage (surge voltage) superimposed to the power.
For models without CT, connect a CT externally if required.
(The over-current cannot be detected in this instrument without the CT.)
Make sure to install the resistor for the transformer load.
Design the load so that 0.5A or more of current flows in each phase.
Use the transformer with a flux density of 1.2 (T) or less and with sufficient capacity.
The secondary load of the transformer should be a three-phase balancing load (Imbalance
ratio: About 10% or less).

The following flowchart is an example of the system operation sequence when alarm output 3 (AL3) is used.
The whole system is protected by separating the power from the system when an instrument abnormality occurs.
Start

SW2 (magnet): OFF
SW1 (breaker): ON
DI1: ON (output stop)* This instrument is set to “Stop” with DI1 being ON.
(No. 1 of Dip SW2 on the front panel: OFF)

Turn the power on by setting SW2 (magnet) ON.

Waits for about 3 seconds for the initialization
at the start-up of this instrument

AL3=OFF？
(Normal start-up)No

AL1=ON?
No

AL2=ON?

* When this instrument starts up normally, AL3 is turned on.

Yes(Fatal trouble or
power abnormality)
Yes(Over-current, rapid-break fusemelting or heat-sink overheat)
Yes(Thyristor element abnormality)No
By turning off DI1, operation starts.

AL3=OFF？
No

Yes(Fatal malfunction or
power abnormality)(Normal)SW2 (magnet) is turned off. (Power shutoff)
DI1 is turned on. (Output stop)

Stop of abnormality

35

The following is an example of the operation chart when using alarm output 3 (AL3).
[Normal]SW2(1) (2) (3) (4) (5) (6) (7) (8) (9)(1): Turn on DI1 to stop this instrument.
(2): Turn on SW2 to turn the power on.
(2)~(3): Waiting for linearization at start-up of this instrument(3): When this instrument starts up normally, AL3 is turned on.
(4): Check the states of AL1, AL2 and AL3.
(AL1 = OFF, AL2 = OFF, AL3 = ON: Normal)
When these are normal, turn off DI1 for starting operation.
(4)~ : Check the state of AL3 constantly during operation.
Normal when AL3 remains in ON status.

(1) (2) (3) (4) (5) (6) (7) (8) (9)(1): Turn on DI1 to stop this instrument.
(2): Turn on SW2 to turn the power on.
(2)~(3) : Waiting for linearization at start-up of this instrument(3): AL3 remains in OFF as this instrument does not start up normally.
(4): Check the states of AL1, AL2 and AL3.
(AL1 = OFF, AL2 = OFF, AL3 = ON: Normal)
As AL3 remains in OFF status, this instrument will assume amalfunction.
Turn off SW2 for power-off, ending abnormality.

(1) (2) (3) (4) (5) (6) (7) (8) (9)(1): Turn on DI1 to stop this instrument.
(2): Turn on SW2 to turn the power on.
(2)~(3) : Waiting for linearization at start-up of this instrument(3): This instrument starts up and AL3 is turned on, but AL2 is turnedon by malfunction of the thyristor element.
(4): Check the states of AL1, AL2 and AL3.
(AL1 = OFF, AL2 = OFF, AL3 = ON: Normal)
As AL2 is ON, this instrument will assume a malfunction.
. Turn off SW2 for power –off, ending abnormality.

(1) (2) (3) (4) (5) (6) (7) (8) (9)(1): Turn on DI1 to stop this instrument.
(2): Turn on SW2 to turn the power on.
(2)~(3) : Waiting for linearization at start-up of this instrument(3): When this instrument starts up normally, AL3 is turned on.
(4): Check the states of AL1, AL2 and AL3.
(AL1 = OFF, AL2 = OFF, AL3 = ON: Normal)
When these are normal, turn off DI1 for starting operation.
(4)~ : Check the state of AL3 constantly during operation.
(5): By malfunction of this instrument, AL3 is turned off.
(6)As AL3 is turned off, this instrument will assume amalfunction.

ON (power-on)
OFF (power-off)
ON (stop)DI1

OFF (run)AL1

ON (Over-current, etc.)

AL2

ON(elementabnormal)

OFF (normal)
OFF (normal)
AL3

ON (normal)
OFF (malfunction)[Start-up abnormality I]
SW2

ON (power-on)
OFF (power-off)
ON (stop)DI1

OFF (run)

AL1 ON (Over-current, etc.)
OFF (normal)
AL2 ON (elementabnormal)
OFF (normal)
AL3

ON (normal)
OFF (malfunction)[Start-up abnormality II]
SW2
DI1

ON (power-on)
OFF (power-off)
ON (stop)OFF (run)

AL1 ON (Over-current, etc.)
OFF (normal)
AL2 ON (elementabnormal)
OFF (normal)
AL3

ON (normal)
OFF (malfunction)[Operation abnormality]
SW2
DI1

ON (power-on)
OFF (power-off)
ON (stop)OFF (run)

AL1 ON (Over-current, etc.)
OFF (normal)
AL2 ON (elementabnormal)
OFF (normal)
AL3

ON (normal)

Turn off SW2 for shutting off power
Turn on DI1 to stop this instrument &to end abnormality.

OFF (malfunction)

9.3 Installation environment
Select a place satisfying conditions in Section 3.2 [Installation precautions] as an installation environment of this
instrument. In environmental conditions exceeding the specification ranges, short-circuit/burnout accidents may
occur inside this instrument. Especially, never use this instrument in an environment with conductive material, mine
dust or unusual substances (metal powder, cut glass, iron or carbon).
When this instrument is used under a special environmental condition such as using a carbon heater, etc., take thefollowing measures at the control panel.
1. Design the control panel with a sealed structure and take heat radiation measures.
2. Apply an air purge to the control panel.
3. Perform periodical cleaning.
36

10 TROUBLESHOOTING
Problem
1. No output (0%).

Check Items(1) Check that the connections of the main circuit terminals are correct.
• Connect U1, V1 and W1 to the 3-phase power supply (R, S and T), andconnect U2, V2 and W2 to the load (such as a heater).
• Confirm the phase-sequence of the 3-phase power supply with a phasedetector and that the connections are in a positive-phase-sequence.
(2) Check that the connections of the setting terminals are correct.
• Confirm that the correct signal is connected to the control input signal.
• Manually confirm that the output varies.
(3) Check that the parameter settings are correct.
• Confirm that the running status is not set to “Stop.”• Confirm that the slope setting is not “0%.”• Confirm that the current limit setting is not “0%.”(4) Check that the following alarms are not ON.
• Over-current alarm• Rapid-break fuse meltdown alarm• Heat radiation fin overheat alarm• Phase-sequence abnormalities alarm• Open-phase alarm• Frequency abnormality alarm(5) Check that the power supply is not interfered with by noise.
• When there is strong noise, a frequency abnormality is assumed and theoutput becomes 0%. Noise countermeasures are required in such acase.
(6) In models with rated currents of 75A or more, the fuse for the receiving
board may have melted if the following occurs.
• When the power of this instrument is not turned on (The statusindicator EV1 does not light even if the power is turned on.), or• When the alarm for the open-phase, phase-sequence abnormality
or frequency abnormality is activated
Check if the fuse for the receiving board has melted and replace it ifnecessary. (Refer to Section 11.4.)
When the fuse for the receiving board melts, an abnormality at thepower source is a possible cause. Add a protection circuit at the powersource. (Refer to Section 9.1.)
If this instrument is used with a melted fuse, additional damage may
occur. Additionally, if the fuse has melted down though a protection
circuit has already been added, do not use this instrument as thisenvironment is not suitable for use.

2. Continuous output (100%).

(1) Check that the following connections are correct.
• Confirm that the load is connected correctly.
If the load is too light, the output is generated continuously.
• With the current or power feedback type, confirm that the CT isconnected properly.
• Confirm that the correct signal is connected to the control input signal.
(2) Check that the parameter settings are correct.
• Confirm that the elevation setting is not “100%.”37

Problem
3. Output does not vary correctly.

Check Items(1) Check that the following connections are correct.
• Confirm the phase-sequence of the 3-phase power supply with a phasedetector and the connections are in a positive-phase-sequence.
• With the current or power feedback type, confirm that the CT isconnected properly. Make sure that the secondary side of the CT is not
grounded.
• Confirm that the correct signal is connected to the control input signal.
(2) Check that the power waveform is normal.
• If the power waveform contains noise or distortion, the output will not be
proportional to the control input signal.
• If a private electric generator is in use, check the power voltage andpower frequency. Particularly, make sure that the power frequency iseither 50 Hz or 60 Hz.
(3) Check that the load is not imbalanced.
• If it is extremely imbalanced, the output will not be proportional to thecontrol input signal.
Achieve a balanced status by correcting the power supply and/or loadand performing the imbalance adjustment.
(4) Check that the parameter settings are correct.
• Confirm that the slope, elevation and soft start settings are correct.

4. This instrument malfunctions.

(1) Check all of the Check Items in 1 to 3 above.
(2) If there is still a problem in operation of this instrument, initialize set
values. (Initializing its internal memory to the default settings).
• Turn this instrument OFF.
• Set No. 8 of the Dip SW1 on the front panel to ON.
• Turn this instrument ON.
• Confirm that the EV1 status display indicator on the front panel flashes.
• Set No. 8 of the Dip SW1 on the front panel to OFF.
• Now initialization is complete; see if the malfunction is recovered.

5. Control output is different from (1) Check that RMS type measuring units are used.
the actual value on a measuring • For the measurement of the control output of the power controller, be sureunit.
to use RMS type or armature type measuring units. A rectifier typemeasuring unit cannot be used.
6. Output is generated eventhough control input signal is 0%
or less.

(1) Check the control input signal.
• Check if the input signal to the control input terminals does not fluctuate
or noise is not superimposed.
(2) Check the length of wires.
• Make wires as short as possible.
Especially make the setting units and voltage signal wires short.

38

11 MAINTENANCE
11.1 Routine Inspection and Maintenance(1) To prevent an accident, be sure to turn this instrument off before proceeding to thefollowing operations.
(2) To prevent burns, do not touch any hot parts, such as a heat radiation fin, immediately
after turning this instrument OFF.

WARNING

11.1.1 Inspection items
Inspect the following items in order to maintain this instrument in the best condition.
Item

Description

Terminal bolts and screws

If the bolts of the main circuit terminals are loose, heat will be
produced due to the large current and the wiring may be burnt out.
Be sure to inspect the tightness of the bolts and screws periodically.

Cooling fan(s)Types with a rated current of 100 A or more are equipped with acooling fan(s) on the top panel. Periodically inspect that there are norotation irregularities or noise. Note that the cooling fan(s) is aconsumable part that must be replaced periodically.

Cleaning

When this instrument is used in a dusty or dirty environment, theattached dust or dirt may degrade the insulation or cause othermalfunctions. To prevent this, clean and remove dust or dirt
periodically.

CAUTION

Never attempt to replace parts other than the cooling fan(s) and rapid-break fuse. You
may not be able to replace other parts correctly and may also risk injury if you replacethem. For the replacement of parts other than the cooling fan(s) and fuse, please contact
your nearest distributor.

11.1.2 Consumables
The following shows the consumables and their replacement timing.
Name of parts

Replacement
interval

Cooling fan(s)Printed circuit boards

2 years
5 years

Operating conditions• Normal working temperature• 50% or less operating rates

39

11.2 Fuse Replacement
WARNING(1) To prevent an accident, be sure to turn this instrument off before proceeding to thefollowing operations.
(2) To prevent accidents, be sure to tighten the fuse with the specified torque whenreplacing it. Also, be sure that the new fuses are of the same specifications as theprevious fuses.

When a rapid-break fuse melts, be sure to check the cause of melting and take proper countermeasures against
it before replacing it. As the fuse may melt due to a malfunction of this instrument, it is necessary to checkcarefully.
The following shows the types of rapid-break fuses being used with this instrument. Confirm the specifications(voltage and current) of the fuse being used, and be sure to replace it with the same fuse.
Rated voltage Rated current
Fuse
Rated current
Fuse
30A
50A
75A
100A
150A
30A
50A
75A
100A
150A

200V AC

400V AC

Hinode Electric 250GH-50 S
Hinode Electric 250GH-75 S
Hinode Electric 250GH-100 S
Hinode Electric 250GH-160 S
Hinode Electric 250GH-200 S
Hinode Electric 660GH-50 S
Hinode Electric 660GH-80 S
Hinode Electric 660GH-100 S
Hinode Electric 660GH-160 S
Hinode Electric 660GH-200 S

200A
250A
300A
400A
500A
200A
250A
300A
400A
500A

Hinode Electric 250GH-315 S
Hinode Electric 250GH-350 S
Hinode Electric 250GH-450 S
Hinode Electric 250GHW-630 S
Hinode Electric 250GHW-710 S
Hinode Electric 660GH-315 S
Hinode Electric 660GH-350 S
Hinode Electric 660GH-450 S
Hinode Electric 660GH-630 S
Hinode Electric 660GH-710 S

Rated current: 75A/100A

Rated current: 30A/50A

Rapid-break fuse

Rapid-break fuseMicro switch

Micro switch

Tightening torque: 3 NmTightening torque: 5Nm

Rated current: 150A/200A/250A

Rated current: 300A/400A/500A

Rapid-break fuse

Rapid-break fuseMicro switch

Micro switch
Tightening torque: 25 NmTightening torque: 12 Nm• A micro switch to detect the melting-down of the rapid-break fuse is attached to the rapid-break fuse.
When replacing the rapid-break fuse, pull out the micro switch and reattach it to the rapid-break fuse after its
replacement.

40

11.3 Cooling Fan Replacement
WARNINGTo prevent an accident, be sure to turn this instrument off before proceeding to thefollowing operations.

(1)Turn the power of this instrument off.

(2)

Remove the cover, and unplug the fan(s) power cord connected to the fan.

(3)

Replace the fan as shown below.
• Note that the type, number and installation method of cooling fans vary according to the rated current.

(4)

Be sure to install the fan in the correct orientation when replacing it.
• The power cord can be connected in any position, but be sure to plug it in securely.

(5)

Attach the cover by reversing the removal procedure.

(6)

After replacement, turn the power of this instrument on, and ensure that all the cooling fans are rotating.

Finger guard

Cover

Fan

M4 nutFan power cord

41

11.4 Fuse Replacement for the receiving board
To prevent an accident, be sure to turn this instrument off before proceeding to the

WARNING following operations.

When the fuse for the receiving board has melted , make sure to check its cause and take measures before its
replacement. In this case, sufficient checking is required since this instrument may be broken down.
Purchase the following fuse for the receiving board.
 Fuse for receiving board: 500SF-04 [Made by Hinode Electric S.S,][Replacement procedures for receiving board fuses]
Three receiving board fuses are installed in the receiving board box inside this instrument.
Replace the fuse following these procedures.
(1) Turn the power of this instrument off.
(2) Remove the cover of the instrument.
(3) Remove the lid of the receiving board box.
Since the receiving board box is fixed with 4 hooks along the sides, unhook them for removing the lid.
(4) Remove the cover of the fuse for receiving box.
(5) The cover of the fuse for the receiving box is fixed to the precut holes of the printed board with hooks.
Hold the cover of the fuse for the receiving board lightly and pull it for removal.
(6) Replace the receiving box fuse.
Since the fuse for the receiving board is fixed to the fuse clip on the printed board, pull it for removing, andthen insert the replacement fuse securely.
(7) For re-installing covers and lid, reverse the above procedures.
S-phaseReceiving board box
Remove the coverand the lid of thereceiving board
box.

Cover

42

R-phaseT-phase

Fuse for thereceivingboard

12 GLOSSARY
12.1 Control Systems
12.1.1 Phase angle control
The phase angle control system controls the output by varying the conducting angle θ (ON timing) within
210 (3-arm operation) or 150 (6-arm operation) of the power frequency. Most power controllers employ thissystem.
This control is continuous compared to the zero-cross control ,and can be used in the primary side control of thetransformer.

12.1.2 Zero-cross control

0.75 sec.

0.75 sec.

OutputThe zero-cross control system controls the output by defining ON/OFF
for each power waveform cycle.
It generates less noise than the phase angle control. However, as the
maximum current flows during the ON period and it is intermittent, theflickering phenomena (Example: Lighting flicker) may be generated.
The zero-cross control can use only a Nichrome heater. Do not use it
for purposes other than the primary side control of a transformer andNichrome heater, otherwise, the over-current alarm will activate or the
rapid-break fuse will be melted down.
The pulse interval corresponds to the output updating interval. For
example, when the pulse interval is 1.5 sec. (default value) and theoutput is 50%, the ON/OFF waveform becomes as shown on the right.

Pulse interval

12.1.3 6-arm and 3-arm types
The “6-arm” type performs ON/OFF control of both the 1-side (positive) and 2-side (negative) gates of 1-power
phase at the thyristor gate control. The “3-arm” type leaves the 2-side (negative) gate permanently ON. This
instrument adopts the “6-arm”.
U V W
1 side (Positive)
2 side (Negative)

6-arm: ON/OFF
3-arm: ON/OFF
6-arm: ON/OFF
3-arms: Always ON

Load[6-arm control waveform][3-arm control waveform]

Voltage

Voltage

Current

Current

43

12.2 Feedback Types
12.2.1 Voltage feedback type

Nichrome heater

ResistanceThis type controls using the feedback of the voltage of the load, and is
optimum for a heater with a low resistance-temperature characteristic asshown on the right (Nichrome heater, etc.).
Such a heater can be controlled stably by maintaining the output voltage fromthe power controller to a constant level.
This feedback can be used only with the phase angle control type.
Note) The voltage feedback type controls the average value of three-phaseload voltage values. This type cannot control each phase individually.

Temp.

12.2.2 Current feedback type
Molybdenum disilicide heater

ResistanceThis type controls using the feedback of the current of the load, and is
optimum for a heater with a high resistance-temperature characteristic asshown on the right (Molybdenum disilicide heater, etc.).
Such a heater can be controlled stably by setting the maximum output of thepower controller to the maximum rated current of the heater because thismakes it possible to output the current in proportion to the control input signal
regardless of changes in the resistance value.
This feedback can be used only with the phase angle control type.

Temp.

Note)  A CT is needed for using the current feedback type. Connect a CT
matching the rated current.
 The current feedback type controls the average value of three-phase load current values. This typecannot control each phase individually.

Silicon carbide (SiC) heater

12.2.3 Power feedback type

ResistanceThis type controls using the feedback of the power of the load and is optimum
for a heater, of which resistance varies according to the generated heattemperature and varies by nearly 4 times the initial resistance value over time(silicon carbide heater, etc.).
Such a heater can be controlled stably by detecting both the voltage andcurrent applied to the load and by feeding back the power multiplying them.
This feedback can be used only with the phase angle control type.

Deterioration

Temp.

Note)  A CT is needed for using the power feedback type. Connect a CT
matching the rated current.
 The power feedback type controls the power consumption of a load (whole power of three phases).
[ 3 x Average of three-phase load voltage values x Average of three-phase load current values]
This type cannot control each phase individually44

12.3 Settings
12.3.1 Slope
100

80

80

60

60

40

40

20

20

0

40

20

60

80

The slope setting provides theoutput (actually the internal SV used
for computational processing) with aslope (inclination). It is effective forexample in an electric furnace with
3-zone control where 3 units of thepower controller are operated by one
controller unit.

Slope setting (%)

Control output (%)

100

100

Control input (%)

12.3.2 Elevation
100

80%

Control output (%)

The elevation setting provides theoutput (actually the internal SV used
for computational processing) with abias. For example, even when thecontroller output becomes minimum,
a constant base power can beapplied to an electric furnace, etc.

60%

80

40%
60

20%
0%

40
20
0

20

40

60

80

100

Control input (%)

12.3.3 Soft startThis function varies the output (actually the internal SV used for computational processing) gradually in order toprevent sudden change in the control output when this instrument is turned on or when the control inputchanges drastically. For example, a rush current can be suppressed in the case of a primary side control oftransformer. With this instrument, the time to achieve SV from 0% to 100% can be set from approx.1 to 20
seconds.
In models without feedback, the change of output (time goal achievement of the SV from 0% to 100%) by thesoft start becomes slightly faster since the actual change of output includes the operation time of the feedback
control, etc.

12.3.4 Current limit
This function sets the maximum limit to the control current. For example, when the voltage feedback is used, thecurrent flows according to the resistance of the load, and the rated current of the power controller may be
exceeded if only the voltage control is used. The current limit function is used in such cases. The assessment
value is the average value of three-phase load current values. This function cannot control each phaseindividually
The following shows an example of current limit.
100

Control current (%)

80
70
60

Current limit 70%(Note) A CT is needed for using thecurrent limit. Connect a CT
matching the rated current.

40
20
0

20

40

60

Input (%)

80

45

100

12.3.5 Imbalance adjustment
For the 3-phase control, although it is desirable that the voltage and current values of the three phases are thesame values (balanced status), they are actually not the same values due to the unreliability of the power supply
and an imbalanced load (imbalanced status). When the imbalanced status is serious, controllability deteriorates
as well as the overall reliability of the system.
The PA-3000-H3 series incorporates the imbalance adjustment function, adjusting the output value of eachphase in a limited range in the case of an imbalanced status. This function solves the imbalanced status in asimulated manner and enables stable control. The imbalance adjustment is performed based on either thevoltage or current.

12.4 Alarm
12.4.1 Over-current alarmThis alarm is turned ON when a current of 120% or more of the rated current flows.
As a current above the rated current of the power controller is flowing, check if the rated current of the power
controller and load specifications are met.
(Note)• A CT is needed for judging the over-current. Connect a CT matching the rated current.

12.4.2 Rapid-break fuse meltdown alarmThis alarm is turned ON when the rapid-break fuse is melted down because a current of 150% to 200% of the
rated current flowed.
The melting of the rapid-break fuse clearly indicates a system error. Check the cause and takecountermeasures.
(Note)• This alarm is available only in the specification with a rapid-break fuse.
• The fuse meltdown indicates an abnormality. Be sure to check the cause and take countermeasures, andthen replace the fuse with the same type of fuse.

12.4.3 Heat radiation fin overheat alarm
For the instrument with the rated current of 100A or more, this alarm is turned ON when the heat radiation fin
temperature is abnormally high.
This alarm may be caused by a malfunction of the cooling fan(s), so these should be replaced.
(Note)• This alarm is available only with instruments with a rated current of 100 A or more.
• The cooling fan(s) should be replaced. Be sure to replace it with the same type of fan(s).

12.4.4 Heater disconnection alarmThis alarm is turned ON when the load resistance exceeds the set disconnection ratio.
• Load resistance = [ Voltage ] ÷ [ Current ]• Disconnection ratio = [(Load resistance - Initial resistance) ÷ (Initial resistance)] ×100
(Note)• A CT is needed for discerning heater disconnection. Connect a CT matching the rated current.

46

12.4.5 Thyristor element abnormality alarmThis alarm is turned ON when the feedback input value is 50% or more when the output of this instrument is 0%.
In other words, an abnormality is discerned when the actual load is subjected to high power while the power
controller output is 0%. However, even when this alarm is ON, the thyristor element of this instrument may notalways be abnormal as there may be an abnormality somewhere else in the system (including the load).
(Note)• Identify if the thyristor element or the system side (including the load) is abnormal.
Particularly, check if the load is connected properly.
• If the thyristor element is abnormal, this instrument should be repaired.
• There is a dead band (delay time) when the alarm assessment is OFF.

12.4.6 Running the abnormality alarmThis alarm activates when the self-diagnostic function of this instrument identifies an abnormality.
This is for checking the internal memory of this instrument; this alarm informs users that the internal memory has
been initialized by an unknown cause. The alarm is released about 1 minute after its activation or when this
instrument is turned OFF then ON again. As the internal memory may reset at this time, check the parametersettings and perform a simulation run to confirm that the control is normal before restarting normal control
operations.
(Note)• If the settings are altered by this alarm, return them to the previous settings.
• The alarm is usually released by turning the power of this instrument OFF then ON again, but if it still
doesn’t release, this instrument should be repaired.

12.4.7 Phase-sequence abnormality alarmThis alarm is turned ON if there are any incorrect connections of the 3-phase power supply (U, V and W).
To release this alarm, turn this instrument OFF, connect the wires properly, and turn it ON again.

12.4.8 Open-phase alarmThis alarm is turned ON when any of the 3-phase power supply connections (U, V or W) are disconnected.
To release this alarm, turn this instrument OFF, connect the wires properly, and turn it ON again.
(Note)• In the case of standard types (The main circuit power supply and the control circuit power supply arecommon.), the determination of the W phase only is enabled. If the U-phase or V-phase opens, theoperation of this instrument will stop. (The power is turned OFF.)• In the case of a light-load/serious imbalance status,/ rated voltage not used or if a special type (where themain circuit power supply and the control circuit power supply are separate) ,the open-phase determination
may not perform correctly.
• Use an abnormality alarm for a three-phase power supply together with a phase-sequence abnormality
alarm. (Even when the phase-sequence abnormality alarm is ON, an open-phase status or a frequency
abnormality may exist. It means a definite determination of status cannot be performed on these 3 kinds ofalarms.

12.4.9 Imbalance alarmThis alarm is determined by the “imbalance rate” which is the alarm set point (judgment value) and by the load
currents of the three phases with the following formula.
• Imbalance rate ={(Load current max value - Load current min value) ÷ (Load current max value)} × 100(%)(Note)• This alarm is not available for zero-cross control types.
• A CT is needed for discerning an imbalance. Connect a CT matching the rated current.
47

12.4.10 Frequency abnormality alarmThis instrument detects the power frequency automatically when it is turned ON. This alarm is turned ON when
the power frequency is neither 50Hz 2Hz nor 60Hz 2Hz.
The alarm can be released by checking the power frequency and by supplying power with a normal waveform.
In addition, this alarm may be activated by noise in the power supply. Countermeasures against noise are
required.

12.5 Load
12.5.1 Resistive load
The typical load of this kind is a heater. There are three kinds of heater according to their resistance-temperature
characteristics.
(1) Nichrome heater• This heater has a low resistant-temperature characteristic, and its current change is small. It is therefore notnecessary to be controlled based on current.
In general, it can be controlled with voltage feedback or without feedback.
• In the case of feedback types, the rated current of the thyristor should have a buffer of 10% or more of theheater rating, considering the variance in the resistance value (about 10%).
In the case of no-feedback types, the rated current of the thyristor should have a buffer of 20% or more of
the heater rating, considering the variance in the resistance value (about 10%) and the power voltage
fluctuation (about 10%).
(2) SiC heater• The resistance value of this heater varies greatly as time passes and increases in the course of use.
This means that the current flow gradually reduces and generated heat will eventually become insufficient.
Therefore, power feedback types, by which the control voltage increases to maintain a constant generated
heat, are the most suitable.
• The service life of this heater should be regarded as expired when the resistance value becomes about 4times the initial resistance value. At this time, the control voltage to the heater increases to double.
• The rated current of the thyristor should have a buffer of 20% or more of the heater rating.
(3) Molybdenum disilicide heaters, metallic heaters and indicators• The resistance value for temperatures other than the normal temperature range varies from 10 – 19 times.
This heater should therefore be controlled with current feedback.
• The rated current of the thyristor should have a safe side of 20% or more of the heater rating.

12.5.2 Inductive load
The typical load of this kind is the transformer. Special care is required on the transformer’s flux density. If this is
too high, the iron core of the transformer is easily saturated magnetically, causing problems such as the
rapid-break fuse melting-down or transformer damage due to heat. Be sure that the flux density of thetransformer is 1.2 (T) or less.
The feedback type can be determined according to the resistance-temperature characteristic of the heater
connected to the secondary side of the transformer.
The rated current of the thyristor should have a buffer of 30% or more of the heater rating. Such primary side
control of a transformer should be performed with the phase angle control.

12.6 Other
12.6.1 Leak current
By a surge-absorbing snubber (series connected resistors and capacitors) being connected inside the power
controller, the power supply and the load become connected and a very small current will flow at the output side,even when the output level is 0%. Therefore, the voltage or current at the load side can be observed even when
the output is 0%, and this is not a malfunction. Control a load with a load current being large enough comparedto the leak current.
48

12.6.2 Output voltage measurement
The output waveform (phase angle control) of the power controller is not a sine wave and is distorted.
With a rectifying type measuring unit, a correct measurement value cannot be obtained as such units are forsine waves. Use an RMS type or armature type measuring unit for the measurement of the output of the power
controller.
The following shows differences between the measurements of an RMS and armature type measuring unit.
Type
RMS type
Rectifying type

0
0

30
12

Actual Voltage Measurement (V)
60
90
120
150
180
28
50
76
107
147

190
166

200
190

12.6.3 Surge countermeasure
The power controller may be affected by a strong surge noise that may be generated during the switching(ON/OFF) of peripheral equipment such as a magnetic switch. It is recommended to attach a noise absorbing
capacitor (oil capacitor or film capacitor) on the load side in order to absorb the surge noise.

49

13 GENERAL SPECIFICATIONS
Phases: 3 phases

Rated voltage: 200V AC (Selection with the 200V/220V/240V switch)
400V AC (Selection with the 380V/400V/440V switch), to be specified• With the standard specifications, the power supply to the main circuit and control circuit iscommon. A special type using separate power supplies for the circuits can also be
manufactured as an option.
Rated current: 30A, 50A, 75A, 100A, 150A, 200A, 250A, 300A, 400A, 500A To be specified
Rated frequency: 50/60 Hz (Automatic switching)
Allowable voltage fluctuation : 10% of the rated voltage
Allowable frequency fluctuation : Rated frequency 2Hz
Control system: Phase angle control, zero-cross control
Arms: 6-arm
Feedback type
: Voltage, current, power
Control input signal : 4 to 20mA DC (input resistance approx. 100 , max. allowable current 25mA DC)
1 to 5V DC (input resistance approx. 50k , max. allowable voltage 10V DC)
Remote setting input : Trimmer signal (10k recommended, 2 to 20k allowable)
Remote contact input: Non-voltage contact signal or open-collector signal (External contact capacity 1mA, 5V DC or more)
Remote CT input: 0 to 5A AC of the rated current
Slope: 0 to 100% of the output range
Elevation: 0 to 100% of the output range
Soft start time
: Approx. 1 to 20sec.
Current limit: 0 to 100% of the output range
Imbalance rate adjustment: Output balance adjustment in the range of approx. 40% is enabled.
Output range: 0 to 98% of the supply voltage
Output accuracy: Without feedback: 10% of the rated voltage
With voltage feedback: 3% of the rated voltage(when rated voltage fluctuation is within 10% and the load resistance fluctuation iswithin 1 to 10 times)
With current feedback: 3% of the rated current(when rated voltage fluctuation is within 10% and the load resistance fluctuation iswithin 1 to 10 times)
With power feedback: 3% of the rated power(when rated voltage fluctuation is within 10% and the load resistance fluctuation iswithin 1 to 3 times)
The accuracy is based on the reference operating condition and in the range of 10% to
90% of the ratings and is not specified under other conditions. The error of the CT is notincluded.
Applied load
: Resistive load, inductive load
The inductive load is applicable only in the control of the primary side of a transformer in thephase angle control method. The flux density recommended for the transformer is 1.2 T or
less.
Minimum load current: 0.5A or more (at 98% output at the rated voltage)
Alarm types: Over-current alarm(Alarm output: AL1)
Rapid-break fuse meltdown alarm(Alarm output: AL1)Heat radiation fin over-heat alarm(Alarm output: AL1)
Heater disconnection alarm(Alarm output: AL2)
Thyristor element abnormality alarm (Alarm output: AL2)
Imbalance alarm(Alarm output: AL2)
Running abnormality alarm
Phase-sequence abnormality alarm (Alarm output: AL3)
Open-phase abnormality alarm(Alarm output: AL3)
Frequency abnormality alarm(Alarm output: AL3)50

Alarm output points : 3 points (AL1, AL2, AL3)
Alarm output AL1, AL2 ---When the alarm is activated, the output is turned on.
Alarm output AL3 ----------When the alarm is activated, the output is turned off.
Alarm output: Mechanical relay, Form A contact
Max. load 240V AC/1A, 30V DC/1A, Min. load 5V DC/10mA or more
Electrical life
: 100,000 cycles or more
Contact protection element : Not built inOver-current protection device: The Rapid-break fuse melts down when the load is short-circuited.
Output 0% (gate OFF) at approx. 120% of the rated current
The upper current limit can be set by the current limit function.
However, connect a CT matching the rated current.
Remote setting types : Slope (AI1)
Elevation (AI2)
Current limit (AI3)
Remote contact types: Running status (DI1: Run/Stop)
Control system (DI2: Phase angle control/zero-cross control)
Setting method (DI3: Front panel/Remote setting)Cooling system: Rated current 75A or less: Natural air cooling
Rated current 100A or more: Forced air cooling
Working temperature : -10 to 55
The following decreasing characteristic is applicable at 40 or more.
Allowable load
current (%)
Ambient temperature (°C)

Working humidity: 30 to 90%RH, No condensation.
Insulation resistance : Between power supply terminal and protective conductor (GND) terminals:
500V DC/50M or more
Withstanding voltage : Between power supply terminal and protective conductor (GND) terminals:
2000V AC/1 min. (200V type)
Between power supply terminal and protective conductor (GND) terminals:
2500V AC/1 min. (400V type)For instruments with the cooling fan(s) (i.e. rated current 100A or more), the fan power cordshould be unplugged (the cooling fan has a withstanding voltage of 2000V AC and should
be excluded from 2500V AC/1 min specification).
Power consumption:
200V supply type
400V supply type
Rated current 30A, 50A, 75A
15VA
20VA
Rated current 100A
40VA
55VA
Rated current 150A, 300A
65VA
90VA
Rated current 200A, 250A, 400A, 500A
90VA
125VA
Generated heat:
Rated current
Max. heat generation
Rated current
Max. heat generation
30A
140W
250A
920W
50A
180W
300A
1100W
75A
260W
400A
1530W
100A
380W
500A
1980W

51

External Dimensions: 325 (H) x 200 (W) x 200 (D) (Rated current 30A/50A types)
325 (H) x 288 (W) x 220 (D) (Rated current 75A/100A types)
325 (H) x 420 (W) x 240 (D) (Rated current 150A to 250A types
495 (H) x 420 (W) x 240 (D) (Rated current 300A to 500A types)
Excluding projections
Weight: Approx. 8kg (Rated current 30A/50A types)
Approx. 13kg (Rated current 75A/100A types)
Approx. 22kg (Rated current 150A to 250A types)
Approx. 36kg (Rated current 300A to 500A types)
Case assembly material: Ordinary steel sheets
Color: GrayInstallation: Panel installation
Reference operation condition: Ambient temperature : 23 2
Ambient humidity: 55 5%RH (No condensation)
Power voltage: Rated voltage 1%
Power frequency: Rated frequency
Installation posture : 0 Front, rear, left and right.
Normal operation condition : Ambient temperature : -10 to 55
Ambient humidity: 30 to 90%RH (No condensation)
Power voltage: Rated voltage 10%
Power frequency: Rated frequency 2Hz
Installation posture : 5 Front, rear, left and rightVibration/impact: None.
Altitude: 2000m or less
Storage condition: Ambient temperature : -20 to 60
Ambient humidity: 5 to 90%RH (No condensation)

SHINKO TECHNOS CO., LTD.
OVERSEAS DIVISION

Reg. Office: 2-5-1, Senbahigashi, Minoo, Osaka, JapanURL: http://www.shinko-technos.co.jp
E-mail: overseas@shinko-technos.co.jp

Tel : 81-72-727-6100
Fax: 81-72-727-7006
No.PAH3E2 2009.06

52