TemTripPRO
MOTOR PROTECTIVE RELAY(Type PRS-1S)
INSTRUCTION MANUAL Be sure to read this instruction manual before using the product.
 Keep this manual handy and safely.
 Make sure that the product is set, adjusted or tested by a competent person.

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KRB-5426c

Table of Contents
1. Safety Notices................................................................................................................................................................. 3
2. Specifications.................................................................................................................................................................. 4
3. Characteristics ................................................................................................................................................................ 5
4. Component Identifications ............................................................................................................................................ 10
5. Installation...................................................................................................................................................................... 11
6. Connection.................................................................................................................................................................... 12
6-1. Circuits and Ratings .......................................................................................................................................... 12
6-2. Terminal Connection Procedure ........................................................................................................................ 13
7. How to Display Measurements and Make Settings ....................................................................................................... 14
7-1. General ............................................................................................................................................................. 14
7-2. Navigation to Each Setting Item Screen After Power ON (from INI-A-1 through to MA-A-1) ............................. 15
7-3. Navigating between Measured Value Display Item Screens (from MO-A-1 through to MO-G-2) ...................... 16
7-4. Navigating between Characteristic Value Setting Item Screens (from S-A-1 through to S-D-1) ........................ 18
7-4-1. Navigating between setup item screens (from S-A-1 through to SU-L-1) ............................................... 20
7-4-2. Navigating between password setting/authentication screens (from SU-L-1 through to P-A-4).............. 23
7-4-3. Navigating between setting item screens (from S-A-1 through to ST-A2-3①) ........................................ 25
7-4-3-1. Navigating between setting item screens (from S-B-2① through to ST-B2-1) ............................. 27
7-4-3-2. Navigating between setting item screens (from S-B-2② through to ST-C2-1) .............................. 29
7-4-3-3. Navigating between setting item screens (from S-C-1 through to ST-L-1) .................................... 31
7-4-3-4. Navigating between setting item screens (from S-D-1 through to ST-W-1)................................... 39
7-5. Navigating between Maintenance Item Screens (from MA-A-1 through to MA-I-2) ........................................... 47
7-6. Screen Transition in the Event of Trip or Alarm (TR-A-1, AL-A-1) ..................................................................... 52
7-7. Function Test and Relay Test (from MA-B-1 to AL-A-1) ..................................................................................... 53
7-8. History and Trip/Alarm Activation Display Screens ............................................................................................ 55
7-9. Responses to Abnormal Events ........................................................................................................................ 56

KRB-5426c-2-

1. Safety Notices
Thank you for purchasing the TERASAKI motor protective relay, TemTrip PRO.
This chapter contains important safety information.
Be sure to carefully read these safety notices, instructions in this manual, and other documents accompanying the motor protective
relay (herein referred to as the "protective relay") to familiarize yourself with safe and correct procedures or practices before using
the protective relay.
Safety notices in this manual are categorized as “CAUTION” in terms of the hazard level:
CAUTION: A caution notice with this symbol indicates a potentially hazardous situation which, if not avoided, may result inminor or moderate injury and/or property damage.
Note that failure to observe a caution notice could result in serious injury/damage in some situations. Because safety notices contain
important information, be sure to read and observe them.

CAUTION
Common to transportation, operations and storage
Do not store the product in a place where it is subject to direct sunlight, high temperatures, high humidity, dusty air, corrosive
gases, strong vibration and shock, or other unusual conditions. (Storage temperature: -25°C to 75°C).
Maintain the ambient temperature in a range of -10°C to 55°C and the ambient humidity in a range of 30% to 90% RH (15°C to
35°C without condensation). Failure to do so may result in malfunction.
Before cleaning, first turn the power OFF, use towels twisted to be dry after soaked with warm water. Use of diluents or otherorganic solvents may dissolve or discolor the product surface
Transportation
Do not drop or impact the product. Carefully handle the product as this is an electronic device. Failure to do so may result in
malfunction.
Operations
Make sure that the product is set, adjusted or tested by a competent person.
After completion of a function check involving setting changes, be sure to return the settings to the original values. Failure to doso may cause a burnout or fire.
Packing items
Connectors: 7 connectors (8 connectors for
specification with communication function)① TemTrip PRO

②

③

⑤

⑥

Packing items⑦ Mounting tool: x2

④

Q’ty

①

TemTrip PRO②

Connector

2pin

1

③

Connector

3pin (1)2*1④

Connector

3pin (2)1⑤Connector

10pin

1

⑥

Connector

12pin

2

⑦

Mounting tool

1

2

*1：For specification with communication function, three of thempackaged.

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KRB-5426c

2. Specifications
Specifications of the type PRS-1S protective relay are shown in Table 1 below.
Table 1 Specifications of protective relay (●: Standard feature, ○: Option)

Protective function

Operation indication

Measurement/event indication

Applied current anomaly detection setting*2
Overload element detection *1 *2
Short-circuit protection setting*3
Motor heating detection setting*1
Unbalanced current trip (UB) *1
Motor startup time, startup count *1
Directional ground overcurrent trip (DGR) *1
Temperature sensor detection setting*1
Open-phase protection*1
Undercurrent protection (LC/HC) *1
Negative phase sequence current protection setting*1
External anomaly detection setting*1
LED indication and LCD screen
Present current (respective phase current)
Leakage current and voltage values
Temperature indication
Alarm event log (100 events) *4
Trip event log (100 events) *4
Trip/alarm event log (200 events) *5

Communication function *5
Control power supply

Presence/abse
nce
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
○
Required

Reference section
3, 7-4-3
3, 7-4-3-1
3, 7-4-3-1
3, 7-4-3-3
3, 7-4-3-3
3, 7-4-3-3
3, 7-4-3-3
3, 7-4-3-4
3, 7-4-3-4
3, 7-4-3-4
3, 7-4-3-4
3, 7-4-3-4
43, 7-33, 7-33, 7-33, 7-6, 7-7
3, 7-6, 7-7
3, 7-6, 7-7
3, 7-5-*1: Two modes are available; one where the protective relay is tripped and operation indication is provided and the other where theprotective relay is not tripped and no operation indication is provided.
*2: Either of the following modes is available; one where the protective relay is not tripped and only operation indication isprovided and the other where the protective relay is not tripped and no operation indication is provided.
*3: Two modes are available; one where the protective relay is tripped and the other where the protective relay is not tripped*4: Logs 100 pieces of data each for trip and alarm events and allows the user to display the cause, concerned value and operatingtime of each event.
*5: Logs 200 pieces of data each for trip, alarm, reset, and other events. The details (concerned value and operating time) need
confirmation of each event log.
*6: The data format is Modbus RTU.
Table 1-1 General specifications of protective relay
Control voltage
VA consumption
External dimensions
Operating temperature
Storage temperature
Humidity
Mass
Applicable standards

KRB-5426c

110VDC (82.5VDC – 143VDC)
5VA
W96 × H144 × D116 mm (including the terminals on the back)-10℃ – +55℃
-25℃ – +75℃
95% or lower (no condensation)
0.7kg
IEC60255: Measuring relays and protection equipment
IEC60947-4-1 Part4: Contactors and motor-starters-4-

3. Characteristics
3-1. Representation Format of Type
Type: PRS-1S

N T 1
① ② ③
Specification
Standard① Communication function② Temperature sensor type
③ CT rated current

SymbolN
C
TP
1
5

Description
Without communication function
With communication function
THERMISTOR
RTD
1A
5A

3-2. About Characteristic Settings
Table 2 shows the characteristic settings of the protective relay.
Table 2 Characteristic settings parameter
Protective function
Frequency
CT rated current (Ict)

Selection
50Hz / 60Hz
(Sec.) 1A/5A(Pri.): (10.0 –1500) A

STEP
1A

Rated current (FLC) (In)-(0.30 –1.00) X Ict A

0.1A

-

190V (Not adjustable)(4.00 –10.00) X In or
0.10
OFF
-

Zero-phase voltage
Trip activation time setting
Input setting 1 (IN1)

Input setting 2 (IN2)
AN. OUT ADJ (4-20)

Transmission address
setting
Transmission rate setting
Parity setting
RY contact output
I1, I2, I3 adjustment

Date/time setting

Remote Reset /External fault 1 (NO) /External fault 1 (NC)Remote Reset /External fault 2 (NO) /External fault 2 (NC)Setting range
-

-

-

-

(90.0 – 110.0)%

0.1%

-

(90.0 – 110.0)%

0.1%

-

(1.00 – 1.20) X Ict

0.01(1-31)--

9600 / 19200 (bps)
NONE / ODD / EVEN
HOLD / PULSE-

90.0 –110.0%

0.1%

Year, month, day, hour,and minute

-

-

-5-

Remarks
However,
0.30 x Ict or more--

4-mA (0 output)
adjustment
20-mA
outputadjustment
Full range setting
Selectable for each RY
Use this function toadjust the value on the
LCD screen to thecustomer’sreferencevalue without affecting
theprotection
characteristics.
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KRB-5426c

Table 2 Characteristic settings parameter (continued)
Protective function
Motor startup time
detection setting

Selection
TRIP / ALARM /OFF

Setting range(1 –250)sSTEP
1s ±2%+0.1-0s

Remarks(When the calculated value
is time equal to or greaterthan 1.10 x overload pickup)

Motor startup countdetection setting

TRIP / ALARM /OFF(1 –10)

1

"Too
Many
Starts"isdisplayed when startup countis detected during the period
specifiedfor
STARTSPERIOD.

Detection time
Undercurrent
protection setting(LVL1)(Low current)

TRIP / ALARM /OFF(1 –60) min(0.20 –0.90) X In

1min
0.01 ±3%(relative to the CT rating)Startup disabled time
DEAD BAND

Undercurrent
protection setting(LVL2)(High current)(0.5,1 –60)s1s ±5%+0.1-0s
TRIP / ALARM /OFF

0.5s +0.1-0s
0.001(0.20 –1.50) X In

0.01±3%(relative to the CT rating)(0.5, 1 –60)s1s ±5%+0.1-0s

Startup disabled time
DEAD BAND-

Applied current
anomaly detection
setting
Overload element

ALARM / OFF

Overload protection

TRIP / ALARM /OFF

KRB-5426c(0.0 –30.0)s(0.005 – 0.050) X Ict(when the motor isabout to turn ON)(0.0 –30.0)s

The relay is activated when acurrent value above the set
value continues for the
specified time limit or longer
with the motor in a runningstate.

The relay is activated when acurrent value above the set
value continues for the
specified time limit or longer
with the motor in a runningstate.

0.5s +0.1-0s
0.001

-

(1.00 –1.50) X In

0.01 ±2.0%

The relay is activated whenthe mean current value
exceeds this set current value
for five seconds or longer withthe motor in a running state.

(1.00 – 5.00) X In

0.01 ± 10%(0.5 –10.0)s

0.1s ±10% +0.1-0sThis function is for JAM/stall
protection.
The relay is activated whenthe mean current value
exceeds this set current value
for five seconds or longer withthe motor in a running state.

(0.005 – 0.050) X Ict(when the motor isabout to turn OFF)-6-

Table 2 Characteristic settings parameter (continued)
Protectivefunction
Short-circuit
protection

Selection

Setting range

STEP

Remarks

TRIP / OFF(4.00 –12.00) X In

0.10 ±10%(0.0 –4.0)s

0.1s ±10%±25ms(When 0 is set: 75 ±25 ms)-(1.00 –1.30) X In

0.01 ±2.0%

Trip activation
time setting-(0.5 –120.0)s

0.5s ±15%+0.1s-0s

Motor heat
capacity ratio-(0.20 –1.00) X
Motor heat capacity

0.01

Motor time
constant ratio-(1 –15)

1This function is for short-circuit
protection. It can be activated whenthe motor is started or running.
Short-circuit protection becomeslocked if the maximum phase current
exceeds the trip activation disablesetting when the motor is started or
running.
Current setting for motor heating
detection setting (LVL1/LVL2)
Trips based on motor heating
detection setting (LVL1/LVL2) are
not activated when the current value
is equal to or lower than this current
setting.
If the current value reaches orexceeds this current setting, the relay
will be activated according to thetime limit dependent on the present
current value, thermal capacity, or
T6X TIME.
This element sets trip activation timefor “cold” motor at a current value six
times the value specified for
OVERLOAD PICKUP.
This element sets the ratio of the
motor heat capacity applied to "hot"motor and the motor heat capacity
applied to "cold" motor.
This element sets the ratio of the time
constant of cooling for a stopped
motor and the time constant ofheating/cooling for a running motor.

Motor heating
detection setting(LVL1)

TRIP /
ALARM / OFF(0.50 –0.99) X max
Thermal capacity

0.01

Motor heating
detection setting(LVL2)

TRIP /
ALARM / OFF--

Overload pick up(The following threeelements are used to
calculate thermal
capacity.)This function simulates motor heating
status.
Heating is related to the square of the
maximum phase current. The
percentage of cooling is directly
related to the heating status andpresent value of the motor.
Motor heat capacity 100% is equal tomotor drive at the maximum
allowable temperature. In this state,tripping must be activated. (LvL2)*1: Motor START state (starting state) refers to the state in which the root-means-square (RMS) of three-phase current values
exceeds the value of overload pick up×110% (from the state in which the current value is less than Ict×15%) once and then falls
below the value of overload pickup×110% once.
*2: Motor RUN state (running state) refers to the state in which the current value falls below the value of Ict×8% after the motor
starting state ends. The motor running state also applies when the current value falls below the value of overload pickup×110%
once and then exceeds the value of pick up×110% again before it falls below the value of Ict×15%.
*3: Motor STOP state (stopped state) refers to a pre-startup state in which the root-means-square (RMS) of three-phase current
values does not yet exceed the value of overload pickup×110%. It also includes a state in which the operating state is"complete".

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KRB-5426c

Table 2 Characteristic settings parameter (continued)
Protectivefunction
Unbalanced
current protection
setting (LVL1)

Selection

Setting range

STEP

Remarks

TRIP / ALARM / OFF--"Unbalanced current
protection setting (LVL1)" is
50% ±2% (relative to the set
value) of "Unbalanced current
protection setting (LVL2)".
Time limit: 5 s (Notadjustable)

TRIP / ALARM / OFF

0.01 ±2%(relative to the set value)

Characteristic: I2t = C (C = 0.01)* Set time limit (MAX T in
"Unbalanced current protection
setting (LVL2)")-(0.20 –0.40) ×("In" or maximum
phase current,
whichever is greater)(5 –30)s1s (±10%)+0.1s-0s

TRIP / ALARM / OFF(1.0 –10.0)mA

0.1mA±10%Time limit is applicable when
10% is set
Time limit is counted after"Unbalanced current
protection setting (LVL1)" isactivated.
Secondary-(0.050 –0.150) X
V0n0.001 ±25%V0n: 190V-(0 –90)deg or OFF

10deg

-

(0.1 –10.0)s

0.1s (±15%)+0.1-0s

Temperature
sensor

RTD / THERMISTOR

-

-

Type
Temperature
sensordetection(LVL1)NTC / PTC
TRIP / ALARM / OFF(0 –250)℃(0.1 –30.0)kΩ

1℃ (±1%)±1℃

Temperature
sensordetection(LVL2)

TRIP / ALARM / OFF

Negative phasesequence current
protection

Unbalanced
current protection
setting (LVL2)
MAX T

Directional Groundfault
detection
current
Directional Ground
fault detection
voltage

Phase

Phase difference

0.1kΩ (±5%)±0.1kΩ

(0 –60)s(0 –250)℃(0.1 –30.0)kΩ

0.1kΩ (±5%)±0.1kΩ

TRIP / ALARM / OFF(0 –60)s-1s (±5%)+0.1-0s-

External anomaly
detection 1

TRIP / ALARM / OFF--

External anomaly
detection 2

TRIP / ALARM / OFF--

Open-phase
protection

TRIP / ALARM / OFF--(0.30 –0.65) X In

0.01 ±10%(0.5 –5.0)s

0.1s ±10%+0.1-0s

Current
unbalance factor
Operating time

1s (±5%)+0.1-0s
1℃ (±1%)±1℃

Setting “OFF” means that no
direction is set.
Phase difference between -3
V and I0
The relay is activated when I0
is within 90° of -3V.
*1

*2
TEMP1 (When RTD is set)
OHM1 (WhenTHERMISTOR is set)

TEMP2 (When RTD is set)
OHM2 (WhenTHERMISTOR is set)

Checked within 0.5 s
The relay is activated when thecurrent value reaches or exceeds
the "overload pick up" setting.
This function is enabled only
when specified in "Input setting 1(IN1)".
This function is enabled only
when specified in "Input setting 2(IN2)".

The relay is activated when
the current value is equal to orless than 50% of the set
current value (In) .

*1: The customer must specify this item when placing an order.
*2: When RTD is selected, "PTC" is fixed when displayed.
*3: Negative phase sequence current: Ins = (IR^2 + IS^2 + 2 × IR × IS × cos)/3(IR: R-phase current, IS: S-phase current, θ: Phase difference with S-phase current shifted from R-phase current by 60°)

KRB-5426c-8-

3-3. Characteristic Curve
Figure 1 shows the operating characteristic curve of the protective relay.

Motor heating trip

Overload trip

Short-time delay trip

Trip caused by unbalanced current

Figure 1 Operating characteristic curve of the protective relay-9-

KRB-5426c

4. Component Identifications
Figure 1 provides general views of the protective relay.

③④⑤①Display screen⑥①⑦② Arrow buttons⑧②⑨③ POWER lamp
Lit in white while control power is being
applied
④ CPU lamp
Lit in green while the internal CPU isoperating⑤ MOTOR lamp
Lit in green while the motor is running(Blinking in green while the motor isstarting)⑥ TRIP ALARM lamp
Lit in red when tripping occurs or
blinking in red when an alarm occurs⑦ MENU button
Used to switch the screen⑧ ENTER button
Used to change the set values⑨ RESET button
Used to reset the relay or extinguish
the LEDs(Front face)

For specification with
communication function,
there is a terminal.

⑩ Control circuit
terminals(Rear face)
Figure 2 protective relay

KRB-5426c-10-5. Installation
This chapter describes how to install the protective relay.
1) External dimensions and panel drilling plan
See Figure 3 below. The thickness of each panel is 2 to 4 [mm].

Front view

Side view

Rear view

Panel drilling plan

Figure 3 External dimensions and panel drilling plan of the protective relay

2) Install and remove the mounting tool method(Install)Protective relay

Mounting tool insertion
groove①Insert the protective relay into the panel and theninsert mounting tool into mounting tool insertion
groove. (2 position above and below)

Hexagonal wrench

Screw of mounting
tool

Panel surface

Mounting tool

②Use a hexagon wrench to tighten the mounting
screws(tighttening torque: 20 to 30 cN.m) secure thebody.(2 position above and below)(Remove)①Use a hexagon wrench to loosen
the mounting screws(2 position
above and below)

Hexagon wrench

Flatblade screwdriver②Attach a flatblade screwdriver to the “○” in the figure above
and remove the mounting tool from the body. (2 position aboveand below) *Do not hook a flatblade screwdriver other than the“○” in the figure above. The shape of the fixture may change.

Figure 3 Attaching the mounting clips-11-

KRB-5426c

6. Connection
6-1. Circuits and Ratings
The connection diagram and terminal description of type PRS-1S protective relay are shown in Figure 5 and Tables 3, respectively.

External command 1
Wiring for 43, 46, and 49 is not
required for thermistor
specification.

External
command 2
Temperature
sensor 1

Temperature
sensor 2

Temperature
sensor 3

36 (vacant)CommunicationPowersupply (+)

Figure 5 Connection diagram for the protective relay
Table 3 Terminal description
I/O terminal nameControl power input

Terminal number⑳－⑲

Current detection CT㉑－㉒ (R-phase)㉓－㉔,㉕ (S-phase)㉖－㉗,㉘ (T-phase)

ZCT
GPT
External command
input signal 1
External command
input signal 2
4-20 mA output
Communication output

Operation signal
output *2

㉙－㉚
㉟－㊲
⑬－⑮
⑭－⑮

Note
110VDC
Overcurrent detection CT
CT rated current: 1 A or 5 A *1
Output current signal from external ZCT 1 to 10 mA
Rated voltage of signal from ZFD for detection
V0n: 190V (when completely grounded)
This terminal inputs external commands. The content of each command is as below.
Activation display: Reset, External FAULT: N/O, External FAULT: N/C

51 (＋)－52(－)

Current㊵(＋)－㊴(－)

For only specifications with communication facility㊳(SG)For only specifications with communication facility①－③ (RY 1)④－⑥ (RY 2)⑦－⑨ (RY 3)⑩－⑫ (RY 4)①: COMMON, ②: Normally closed contact (NC), ③: Normally open contact (NO)④: COMMON, ⑤: Normally closed contact (NC), ⑥: Normally open contact (NO)⑦: COMMON, ⑧: Normally closed contact (NC), ⑨: Normally open contact (NO)⑩: COMMON, ⑪: Normally closed contact (NC), ⑫: Normally open contact (NO)CPU operating status⑯－⑰*2
Temperature㊶: COMMON, ㊷: Normally closed contact (NC), ㊸: Normally open contact (NO)㊶－㊸
measurement circuit 1
Temperature㊹: COMMON, ㊺: Normally closed contact (NC), ㊻: Normally open contact (NO)㊹－㊻
measurement circuit 2
Temperature㊼: COMMON, ㊽: Normally closed contact (NC), ㊾: Normally open contact (NO)㊼－㊾
measurement circuit 3*1: To be stated when ordering*2: The contact output ratings are 8A at 250 VAC and 5A at 24 VDC (Minimum load: 5 VDC, 10 mA).
*3: Terminal No. 36 is vacant.

KRB-5426c-12-6-2. Terminal Connection Procedure

CAUTION After connecting each wire to the connector, recheck their respective connection positions. Incorrect connections may
result in failure.
Figures 6-1 and 6-2 show the connection procedure.
① Press each connector release button (orange) with a small flathead screwdriver.
② With the release button pressed, insert each wire into the corresponding square hole on the connector.
③ Release the release button with the wires inserted.
②➀
Small flathead screwdriverWith the releasebutton pressed③

Small flathead screwdriver
Release the release button

Figure 6-1 Connecting to input terminals

②

③

④

Terminal
No.

⑤

⑥

1-12
13-15
16,17
18-20
21-27
28-30
35-37
38-40
41-52

Connector
⑥
③
②
④
⑤
⑤
③
③
⑥

Wire size [mm2]Solid wire
0.2-2.25
0.2-0.75
0.2-0.75
0.2-1.25
0.2-2.0
0.2-0.75
0.2-0.75
0.2-0.3
0.2-0.3

Stranded wire
0.2-2.25
0.2-0.75
0.2-0.75
0.2-1.25
0.2-2.0
0.2-0.75
0.2-0.75
0.2-0.3
0.2-0.3

Wire
strippinglength [mm]
7
7
7
7
7
7
7
7
7

Figure 6-2 Control circuit terminal numbers of Tem Trip PRO and wire sizes for each connector used-13-

KRB-5426c

7. How to Display Measurements and Make Settings
CAUTION Make sure that the protective relay is adjusted by a competent person.

The following describes how to display measurements and make settings of the protective relay.

7-1. General
1) Make sure that control power is supplied. Control power supply is required to display measurements.
2) The MENU, arrow (up, down, right, left), ENTER, and RESET buttons (seven buttons in total) are used to display measured
values and set characteristics. In the figures shown in Sections 7-2 to 7-7, the following button symbols are used to indicate
the buttons that must be pressed.
(Button symbols and their descriptions)[M]: Press the MENU button.
[U]: Press the up arrow button.
[D]: Press the down arrow button.
[R]: Press the right arrow button.
[L]: Press the left arrow button.
[E]: Press the ENTER button.
[R]: Press the RESET button.

The operation panel of the protective relay is shown in Figure 7 below.
Display screen

MENU button
Arrow buttons
ENTER button
RESET button

Figure 7 Operation panel of type PRS-1S protective relay

KRB-5426c-14-7-2. Navigation to Each Setting Item Screen After Power ON (from INI-A-1
through to MA-A-1)
This motor protective relay is provided with measured value display items, characteristic value setting items, and maintenance items
that are used to display histories and conduct function checks. Figure 8 below shows how to navigate to each item.
Initial screen

This screen (INI-A-1) is displayed after the power is turned on.

Measured value display item screen

Measured value display items (refer to 7-3)
This screen allows you to view various currents, line voltage,phase voltage, electrical power, demand power, electricalenergy, power factor, and other measured values.

Characteristic value setting item screen

Characteristic value setting items (refer to 7-4)
This screen allows you to view the rated voltage, CT rated
primary current, or other specifications and change settings.

Maintenance item screen

Maintenance items (refer to 7-5)This screen allows you to delete records and logs and conduct
function checks.

Figure 8 Navigation to each setting item screen after power ON (from INI-A-1 through to MA-A-1)-15-

KRB-5426c

7-3. Navigating between Measured Value Display Item Screens (fromMO-A-1 through to MO-G-2)
Figure 9 shows how to navigate between measured value display item screens (from MO-A-1 through to MO-G-2). See Table 4 foritems that are actually displayed on the screen.

Figure 9 Navigating between measured value display item screens (from MO-A-1 through to MO-G-2)

KRB-5426c-16-

Table 4 Display items and descriptions of measured value display item screens (MO-A-1to MO-G-2)
ScreenNo.

Display

MO-C-1

MO-E-1MO-F-1

Remarks

IMAX INST

Maximum phase current value (present value)

I1 INST

Phase 1 (R-phase, A-phase) current value (present
value)

I2 INST

Phase 2 (S-phase, B-phase) current value (present
value)

I3 INST

Phase 3 (T-phase, C-phase) current value (present
value)IMAX MAX

Maximum phase current value to the present time

I0 INST

Leakage current value (present value)

3V0 INST

Leakage voltage value (present value)

MOTOR LOAD CURRENT

Motor load current

UNBALANCE CURRENT

Unbalanced current

THERMAL CAPACITY

Motor heat capacity

LAST START PERIOD

Startup time

LAST START MAX I

Starting current

TOTAL RUN TIME

Operating time

TOTAL NUMBER OF STARTS

Operation count

RTD T1

Temperature measured by temperature sensor 1

RTD T2Temperature measured by temperature sensor 2

RTD T3Temperature measured by temperature sensor 3

THERMISTOR T1

Temperature measured by temperature sensor 1

THERMISTOR T2

Temperature measured by temperature sensor 2

THERMISTOR T3

Temperature measured by temperature sensor 3

INPUT1

External command 1 input status

The status of the external command
input terminal (terminal number 13)
is displayed.

INPUT2External command 2 input status

The status of the external command
input terminal (terminal number 14)
is displayed.

RY1

External contact output status 1

The output status of terminal
number 1 is displayed.

RY2

External contact output status 2

The output status of terminal
number 4 is displayed.

RY3

External contact output status 3

The output status of terminal
number 7 is displayed.

RY4

External contact output status 4

The output status of terminal
number 10 is displayed.

MO-A-1

MO-B-1Item

MO-G-1MO-G-2-17-

Temperature value measured by
RTD(platinum
resistancetemperature detector)
Temperature value measured bythermistor

KRB-5426c

7-4. Navigating between Characteristic Value Setting Item Screens (fromS-A-1 through to S-D-1)
Figure 10 shows how to navigate between characteristic value setting item screens (from S-A-1 through to S-D-1). See Table 5 foritems that are actually displayed on the screen.

See the setup screens in 7-4-1.

See the setting screens in 7-4-3.

Figure 10 Navigating between characteristic value setting item screens (from S-A-1 through to S-D-1)

KRB-5426c-18-

Table 5 Setting items and display details of characteristic value setting item screens (S-A-1 through to S-D-1)
Screen No.

Setting items and display details
Item
SET UP
Initial display of setting mode
LOAD INCREASE
Applied current anomaly detection setting
O/C LVL1-JAM
Overload protection setting
O/C LVL2-SHORT
Short-circuit protection setting
THERMAL
Motor heating detection setting
UNBALANCE
Unbalanced current protection setting
MAX START TIME
Motor startup time monitor setting
TOO MANY STAR
Motor startup count monitor setting
DGR
Ground fault detection setting
TEMPERATURE
Temperature sensor detection setting
PHASE LOSS
Open-phase protection setting
HIGH & LOW CURRENT
Undercurrent protection setting
PHASE SEQUENCE
Negative phase sequence current protection setting
EXTERNAL FAULT
External anomaly detection setting
Display

S-A-1
S-B-1

S-C-1

S-D-1

-19-

Remarks

KRB-5426c

7-4-1. Navigating between setup item screens (from S-A-1 through to SU-L-1)
Figures 11 to 11-2 show how to navigate between setup item screens (from S-A-1 through to SU-L-1). See Table 6 for items thatare actually displayed on the screen. When each setting item is changed, your password needs authentication once. Refer to "7-4-2.
Navigating between password setting/authentication screens".

(a) When changing the setting of ICT from 1500A to
1400A① SU-A-1 → SU-A-2: The cursor moves to “ICT”.
② SU-A-2 → SU-A-3: The cursor moves to “1500”, sothat you can use the [U] or [D] button to change the value.
③ SU-A-3 → SU-A-4: A preliminary decision is made to
update the value to 1400. (At this stage, the value is yet to
be updated.)④ SU-A-4 → SU-A-2(1): The value is updated to 1400.
SU-A-4 → SU-A-2: The value reverts to the originalvalue (1400).
If you have updated the value above, replace SU-A-1 andSU-A-2 with SU-A-1(1) and SU-A-2(1), respectively, inthe following description.

For SU-A-2 items “ICT2” and “ln”, after the screen is
switched to SU-A-2 or SU-A-2(1) by the operation of
Step ① in (a) above, use the [U] or [D] button to
select these items. Then, Steps ② to ④ are thesame as those shown above.
You can set each item in the same way as (a) above.

SU-E-1

KRB-5426c

Figure 11
Navigating between setup item screens (from S-A-1 through to SU-D-1)-20-

SU-D-1

You can set each item in the same
way as (a) above.

SU-L-1Figure 11-1 Navigating between setup item screens (from SU-E-1 through to SU-M-1)-21-

KRB-5426c

SU-M-1

See the password setting screens in 7-4-2.

Figure 11-2 Navigating between setup item screens (SU-L-1)

Table 6 Setting items and display details of setup item screens (S-A-1 to SU-L-1)
ScreennumberS-A-1
SU-A-1
SU-B-1

Setting items and display details
Display
Item
Initial display of setting mode
ICT
CT primary current
ICT2 *1
CT secondary current
In
Rated current
V0n
Zero-phase voltage
FREQUENCY
Frequency

SU-C-1

RY1
RY2
RY3
RY4

Relay
output mode

SU-D-1I1 ADJUSTI2 ADJUST
I3 ADJUST

Phase current
adjustment range

TRIP INHIBITTrip activation disablesetting

CONFIG INPUT1

External input 1 setting

CONFIG INPUT2

External input 2 setting

FULL RANGE

20-mA output setting
20-mA output
adjustment
4-mA (0 output)
adjustment
Transmission address
setting
Transmission ratesetting
Parity setting

SU-E-1

SU-F-1

FULL ADJUSTZERO ADJUSTADDRESSSU-J-1*2

SU-K-1

SU-M-1
SU-L-1BAUD RATEPARITY
YEAR
MONTH
DAY
HOUR
MINUTE
BRIGHTNESSCONTRASTPASSWORDCHANGE

Date/time setting(Year/month/day/hour/
minute)Display brightness
Display contrast
Password change mode

Selection

Setting range

1A/5A
-

10-1500A
3.0-1500A
190V (Not adjustable)-

50Hz/60Hz

Refer to 7-4.
--

This item can be set separately foreach relay output.

-

90-110%This item is used for fine adjustment
between the phase current value
actually measured at the installation
location and the measured value
displayed.

-(4.00-10.00)
x In/OFF---

HOLD/PULSE

Remote Reset/
External Fault1NO/
External Fault1 NC
Remote Reset/
External Fault2 NO/
External Fault2 NC---(1-1.2)×Ict--

90.0-110.0%--

90.0-110.0%

-

-

1-31

-

9600/19200--

NONE/ODD/EVEN
Any number(four digits)*3

10-100%10-100%--

Refer to 7-4-2.

*1: To be stated when ordering*2: Not displayed for products without communication specification*3: This item is factory-set to "0000".

KRB-5426c

Remarks-22-

7-4-2. Navigating between password setting/authentication screens (from SU-L-1
through to P-A-4)
Figure 12 shows how to navigate between password setting screens (from SU-L-1 through to SU-L-6). See Table 7 for items thatare actually displayed on the screen.

[E]: Updates the passwordor[L]: Does not update the password

For SU-L-2, SU-L-3, SU-L-4, and SU-L-5, as in the case with SU-L-2 →SU-L-2①, the [U] or [D] button can be used to select any number (0 to 9).
Figure 12 Navigating between password setting screens (from SU-L-1 through to SU-L-6)

Table 7 Setting items and display details of password setting screens (SU-L-1 to SU-L-6)
Screen No.

Display/setting item

Setting range

SU-L-1

Password change mode-

SU-L-2

Password setting: 1st digit

0-9

SU-L-3

Password setting: 2nd digit

0-9

SU-L-4

Password setting: 3rd digit

0-9

SU-L-5

Password setting: 4th digit

0-9

SU-L-6Checking the password change-

Remarks
Initial display
With the cursor staying in one of the digits, pressing the [U] arrow button
increments the number in the digit or pressing the [D] arrow button
decrements the number in the digit.
This screen is displayed when you press the ENTER button after changing
the password using screens SU-L-2 to SU-L-5. Pressing the ENTER button
again updates the current password to the new one. Pressing the [L] arrow
button instead of the ENTER button returns the display to the initial screen(SU-L-1) without changing the password.

-23-

KRB-5426c

Figure 12-1 shows how to navigate between password authentication screens (from P-A-1 through to P-A-4). See Table 7-1 foritems that are actually displayed on the screen. Your password needs authentication in the following cases: When you press the [M] button to navigate to the maintenance item screen or measured value display item screen as shown in 7-2
and then change settings for each setting item on the characteristic value setting item screen When you change your password and then each characteristic value setting item
 When you navigate to the maintenance item screen and then delete histories

If [E] is pressed
and the password
is satisfactory

Setting
screen,etc.
If [R] is pressed
and thepassword has
not beenauthenticatedPrevious
screenIf [E] is pressed
and the password
is unsatisfactory[L]

For SU-L-2, SU-L-3, SU-L-4, and SU-L-5, as in the case with SU-L-2 →SU-L-2①, the [U] or [D] button can be used to select any number (0 to 9).
Figure 12-1 Navigating between password authentication screens (from P-A-1 through to P-A-4)

Table 7-1 Setting items and display details of password authentication screens (P-A-1 to P-A-4)
Screen No.
P-A-1
P-A-2
P-A-3
P-A-4

KRB-5426c

Display/setting item
Password input: 1st digit
Password input: 2nd digit
Password input: 3rd digit
Password input: 4th digit

Setting range
0-9
0-9
0-9
0-9

Remarks
With the cursor staying in one of the digits, pressing the [U] arrow button
increments the number in the digit or pressing the [D] arrow button decrements
the number in the digit.

-24-

7-4-3. Navigating between setting item screens (from S-A-1 through to ST-A2-3①)
Figure 13 shows how to navigate between setting item screens (from S-A-1 through to AT-A2-3①). See Table 8 for items that are
actually displayed on the screen.

S-B-2①

See the setting
screens

in

7-4-3-3.

You can set
each item inthe same way
as (a).

See the setting
screens

in

7-4-3-4.

Figure 13 Navigating between setting item screens (from S-A-1 through to AT-A2-3①)-25-

KRB-5426c

Table 8 Setting items and display details of setting item screens (S-A-1 to AT-A2-3①)(overcurrent anomaly detection setting)Setting items and display details
Display
Item
Initial display of setting mode

Screennumber
S-B-1
S-B-2

Setting item selection switching

Selection

Setting range

-

-

-

ST-A-1①

MODE

Mode setting

ST-A-2②

L/I CURR

Trip pickup current
value setting-

ST-A2-1①

External output setting item switching

-

RY1
RY2
ST-A2-2①
RY3
RY4

KRB-5426c

ALARM/OFF

ON/OFF
External output
setting

ON/OFF
ON/OFF
ON/OFF

Remarks

Refer to page 18.
Use the [U] or [D] arrow button to switch the item tobe set.
At the ST-A-1① or ST-A-1② screen, use the [U] or[D] arrow button to select the item to be set, press the[R] arrow button, and then use the [U] or [D] arrow(1.00-1.50) x In button to set a mode or numerical value.
The procedure is the same as that described on page20.
Use the [U] or [D] arrow button to switch the item tobe set. The procedure is the same as that described on
page 20.
This setting item specifies whether to output toterminal number 1.
This setting item specifies whether to output toterminal number 4.
This setting item specifies whether to output toterminal number 7.
This setting item specifies whether to output toterminal number 10.

-26-

7-4-3-1. Navigating between setting item screens (from S-B-2① through to ST-B2-1)
Figure 14 shows how to navigate between setting item screens (from S-B-2① to ST-B2-1). See Table 9 for items that are actuallydisplayed on the screen.

You can set each item in the same way
as (a).

Figure 14 Navigating between setting item screens (from S-B-2① through to ST-B2-1)-27-

KRB-5426c

Table 9 Setting items and display details of setting item screens (S-B-2① to ST-B2-1) (overload protection setting)
Screen number

Setting items and display details
Display
Item

Selection

Setting range

S-B-2①

Setting item switching--

ST-B-1①MODE

ST-B-1②

O/C L1 CURR

ST-B-1③

O/C L1 TIME

Mode setting
Trip pickup current
value setting
Activation time
limit setting

External output setting item
selection/setting

ST-B2-1

RY1
RY2
RY3
RY4

KRB-5426c

External output
setting

TRIP/ALARM/OFF-(1.00-5.00)xIn-(0.5-10.0)s--

ON/OFF-

ON/OFF-

ON/OFF-

ON/OFF--28-

Remarks
This screen is displayed when you press the[D] arrow button once at the S-B-2 screen(shown on page 25).
At the ST-B-1① or ST-B-1② screen, use the[U] or [D] arrow button to select the item tobe set, press the [R] arrow button, and thenuse the [U] or [D] arrow button to set
numerical values.
The procedure is the same as that described on
page 20.
Use the [U] or [D] arrow button to select theitem to be set, and press the [R] arrow button
and then change the output settings.
The procedure is the same as that described on
page 20.
This setting item specifies whether to output
to terminal number 1.
This setting item specifies whether to output
to terminal number 4.
This setting item specifies whether to output
to terminal number 7.
This setting item specifies whether to output
to terminal number 10.

7-4-3-2. Navigating between setting item screens (from S-B-2② through to ST-C2-1)
Figure 15 shows how to navigate between setting item screens (from S-B-2② through to ST-C2-1). See Table 10 for items that are actuallydisplayed on the screen.

You can set each item in the same way
as (a).

Figure 15 Navigating between setting item screens (from S-B-2② through to ST-C2-1)-29-

KRB-5426c

Table 10 Setting items and display details of setting item screens (S-B-2② to ST-C2-1) (short-circuit protection setting)
Screen number

Setting items and display details
Display
Item

Selection

Setting range

S-B-2②

Setting item switching--

TRIP/ALARM/
OFF-ST-C-1①

MODE

Mode setting

ST-C-1②

O/C L2 CURR

Trip pickup current
value setting-(4.00-12.00) x In

ST-C-1③

O/C L2 TIME

Activation time
limit setting-(0.0-4.0)s--

ON/OFF-

ON/OFF-

ON/OFF-

ON/OFF-

External output setting item
selection/setting

ST-C2-1

RY1
RY2
RY3
RY4

KRB-5426c

External output
setting-30-

Remarks
This screen is displayed when you press the[D] arrow button twice at the S-B-2 screen(shown on page 25).
At the ST-C-1① or ST-C-1② screen, use the[U] or [D] arrow button to select the item to be
set, press the [R] arrow button, and then use the[U] or [D] arrow button to set numericalvalues.
The procedure is the same as that described on
page 20.
Use the [U] or [D] arrow button to select theitem to be set, and press the [R] arrow button
and then change the output settings.
The procedure is the same as that described on
page 20.
This setting item specifies whether to output toterminal number 1.
This setting item specifies whether to output toterminal number 4.
This setting item specifies whether to output toterminal number 7.
This setting item specifies whether to output toterminal number 10.

7-4-3-3. Navigating between setting item screens (from S-C-1 through to ST-L-1)
Figures 16 shows how to navigate between setup item screens (from S-C-1 through to ST-F2-1). See Table 11 for items
that are actually displayed on the screen.

You can set each item inthe same way as (a).

S-C-2①Figure 16 Navigating between setting item screens (from S-C-1 through to ST-F2-1)-31-

KRB-5426c

Table 11 Setting items and display details of setting item screens (S-C-1 to ST-F2-1) (OVERLOAD PICKUP setting)

S-C-1

Setting items and display details
Display
Item
Initial display of setting mode

S-C-2

Setting item selection switching

Screen number

O/L CURR
T6X TIME
ST-D-1
H/C RATIOC/T FACTOR
MODE

ST-E-1

THERMAL L1

Trip pickup current
value setting
Trip activation time
setting
Motor heat capacity
ratio
Motor time constantratio
Mode setting

Heat capacity
setting

External output setting item
selection/setting

ST-E2-1

RY1
RY2
RY3

External output
setting

RY4ST-F-1

MODE

Mode setting

External output setting item
selection/setting

ST-F2-1

RY1
RY2
RY3
RY4

KRB-5426c

External output
setting

Selection

Setting range

Remarks

-

-

-

-

See page 18.
Use the [U] or [D] arrow button toswitch the item to be set.

-

(1.00-1.30) x In-

(0.5-120.0)s-(0.20-1.00) x(Motor heat capacity)

-

1-15

TRIP/ALARM/OFF--(0.50-0.99)x(Motor heat capacity)--

ON/OFF-

ON/OFF-

ON/OFF-

ON/OFF--

TRIP/ALARM/OFF---

ON/OFF-

ON/OFF-

ON/OFF-

ON/OFF--32-

At the ST-D-1 screen, use the [U] or[D] arrow button to select the item tobe set, press the [R] arrow button, andthen use the [U] or [D] arrow button to
set numerical values.
The procedure is the same as that
described on page 20.
This screen is displayed when youpress the [D] arrow button with “C/T
FACTOR” selected on the ST-D-1
screen.
Use the [U] or [D] arrow button to
select the item to be set, press the [R]arrow button, and then use the [U] or[D] arrow button to set a mode or
numerical value.
The procedure is the same as that
described on page 20.
Use the [U] or [D] arrow button to
select the item to be set, and press the[R] arrow button and then change theoutput settings.
The procedure is the same as that
described on page 20.
This setting item specifies whether to
output to terminal number 1.
This setting item specifies whether to
output to terminal number 4.
This setting item specifies whether to
output to terminal number 7.
This setting item specifies whether to
output to terminal number 10.
This screen is displayed when youpress the [D] arrow button with
“RY4” selected on the ST-E2-1
screen.
You can use the [U] or [D] arrow
button to select a desired mode.
Use the [U] or [D] arrow button to
select the item to be set, and press the[R] arrow button and then change theoutput settings.
The procedure is the same as that
described on page 20.
This setting item specifies whether to
output to terminal number 1.
This setting item specifies whether to
output to terminal number 4.
This setting item specifies whether to
output to terminal number 7.
This setting item specifies whether to
output to terminal number 10.

Figure 16-1 shows how to navigate between setting item screens (from S-C-2① through to ST-H2-1). See Table 11-1 for items thatare actually displayed on the screen.

S-C-2①

You can set each itemin the same way as(a).

S-C-2②
Figure 16-1 Navigating between setting item screens (from S-C-2① through to ST-H2-1)-33-

KRB-5426c

Table 11-1 Setting items and display details of setting item screens (S-C-2① to ST-H2-1)(unbalanced current protection setting)External output
setting screen
numberSetting items and display details
DisplayItem

S-C-2①

Setting item selection switching

ST-G-1

MODE

Unbalanced current
protection setting(LVL1) mode setting

Unbalanced current protection
setting (LVL1)
External output setting item
selection/setting
ST-G2-1

RY1
RY2
RY3

External output
setting

RY4
Unbalanced current protection
setting (LVL2)
Mode/current value/operating time
setting
ST-H-1MODE
U/B L2CURR
U/B L2TIME

Unbalanced current
protection setting(LVL2) mode setting
Trip pickup current
value setting
Operating time setting

Unbalanced current protection
setting (LVL2)
External output setting item
selection/setting

Selection

Setting
range

-

-

TRIP/ALARM/OFF

-

-

-

ON/OFF-

ON/OFF-

ON/OFF-

ON/OFF---

TRIP/ALARM/OFF

-

-

-

ST-H2-1
RY1
RY2
RY3
RY4

KRB-5426c

ON/OFF
External output
setting

ON/OFF
ON/OFF
ON/OFF

Remarks
This screen is displayed when you press the [D] arrow
button once at the S-C-2 screen (shown on page 31).
This screen allows you to select a desired mode byusing the [U] or [D] arrow button after pressing the [R]arrow button once.
Use the [U] or [D] arrow button to select the item to be
set, and press the [R] arrow button and then change theoutput settings.
The setting procedure is the same as that described on
page 20.
This setting item specifies whether to output toterminal number 1.
This setting item specifies whether to output toterminal number 4.
This setting item specifies whether to output toterminal number 7.
This setting item specifies whether to output toterminal number 10.
This screen is displayed when you press the [D] arrow
button with “RY4” selected on the ST-G2-1 screen.
The figure on the previous page shows the state inwhich trip pickup current value setting (U/B L2
CURR) is selected. You can use the [U] or [D] arrow
button to select other items.
You can use the [U] or [D] arrow button to select adesired mode.

(0.20-0.4 Use the [U] or [D] arrow button to increment or0)xIn
decrement the value to be set.
Use the [U] or [D] arrow button to increment or(5-30)sdecrement the value to be set.
This screen is displayed when you press the [D] arrow
button with “U/B L2 TIME” selected on the ST-H-1
screen.
Use the [U] or [D] arrow button to select the item to be
set, and press the [R] arrow button and then change theoutput settings.
The setting procedure is the same as that described on
page 20.
This setting item specifies whether to output toterminal number 1.
This setting item specifies whether to output toterminal number 4.
This setting item specifies whether to output toterminal number 7.
This setting item specifies whether to output toterminal number 10.

-34-

Figure 16-2 shows how to navigate between setting item screens (from S-C-2② through to ST-J2-1). See Tables 11-2 and 11-3 foritems that are actually displayed on the screen.

S-C-2①

You can set each
item in the same
way as (a).

S-C-2④

Figure 16-2 Navigating between setting item screens (from S-C-2① through to ST-J2-1)-35-

KRB-5426c

Table 11-2 Setting items and display details of setting item screens (S-C-2① to ST-I2-1)(motor startup time monitor setting)Setting items and display
details
Display
Item
Setting item selection
switching

External output
setting screen
numberS-C-2②

Selection

Setting
range

-

-

-

-

MODE

Maximum motor
startup time
detection modesetting

TRIP/ALARM/
OFF

-

MAX
START
TIME

Motor startup
time detection
setting-(1-250)s--

ON/OFF-

ON/OFF-

ON/OFF-

ON/OFF-

Setting item selection
switching

ST-I-1

Maximum motor startup time
detection
External output setting item
selection/setting
ST-I2-1

RY1
RY2
RY3

External output
setting

RY4

Remarks
This screen is displayed when you press the [D] arrow button
once at the S-C-2① screen (shown on page 33).
The figure on the previous page shows the state in whichstartup time setting (MAX START TIME) is selected.
You can use the [U] or [D] arrow button to select a desired
setting item.
You can select one of the modes shown to the left by pressing
the [U] arrow button once and then the [R] arrow button at
this screen. Use the [U] or [D] arrow button to switch themode to be set.
This setting item specifies the length of startup time at which
operation is output.
You can set startup time by pressing the [U] arrow button
once at this screen. Use the [U] or [D] arrow button toincrement or decrement the value to be set.
This screen is displayed when you press the [D] arrow button
with “MAX START TIME” selected on the ST-I-1 screen.
Use the [U] or [D] arrow button to select the item to be set,
and press the [R] arrow button and then change the output
settings.
The setting procedure is the same as that described on page
20.
This setting item specifies whether to output to terminal
number 1.
This setting item specifies whether to output to terminal
number 4.
This setting item specifies whether to output to terminal
number 7.
This setting item specifies whether to output to terminal
number 10.

Table 11-3 Setting items and display details of setting item screens (S-C-2③ to ST-J2-1)(motor startup count monitor setting)External output
setting screen
numberSetting items and display details

S-C-2③

ST-J-1

ST-J2-1

Selection

Settingrange

Setting item selection switching--

Setting item selection switching

-

-

MODE

Motor startup
countdetection modesetting

TRIP/ALARM/OFF-NUM OF
START

Motor startup
countdetection setting-(1-10)STARTSPERIOD

Motor startup
countdetection time
setting-(1-60)min

Motor startup count detection
External output setting item
selection/setting--

ON/OFF-

ON/OFF-

ON/OFF-

ON/OFF-

Display

RY1
RY2
RY3
RY4

KRB-5426c

Item

External
setting

output-36-

Remarks
This screen is displayed when you press the [D] arrow button
once at the S-C-2② screen (shown on page 35).
The figure on the previous page shows the state in whichstartup time setting (MAX START TIME) is selected.
You can use the [U] or [D] arrow button to select a desired
setting item.
You can select one of the modes shown to the left by pressing
the [U] arrow button once and then the [R] arrow button at
this screen. Use the [U] or [D] arrow button to switch themode to be set.
This setting item specifies the motor startup count at which
operation is output.
You can set startup count by pressing the [U] arrow button
once at this screen. Use the [U] or [D] arrow button toincrement or decrement the value to be set.
This setting item specifies the time during which the numberof motor startups is counted.
You can select this setting item by pressing the [D] arrow
button once and then the [R] arrow button at this screen.
Use the [U] or [D] arrow button to increment or decrement
the value to be set.
This screen is displayed when you press the [D] arrow button
with “STARTS PERIOD” selected on the ST-J-1 screen.
Use the [U] or [D] arrow button to select the item to be set,
and press the [R] arrow button and then change the output
settings.
The setting procedure is the same as that described on page
20.
This setting item specifies whether to output to terminal
number 1.
This setting item specifies whether to output to terminal
number 4.
This setting item specifies whether to output to terminal
number 7.
This setting item specifies whether to output to terminal
number 10.

Figure 16-4 shows how to navigate between setting item screens (from S-C-2④through to ST-L-1). See Table 11-4 for items thatare actually displayed on the screen.

S-C-2③You can set each
item in the same way
as (a).

Figure 16-4 Navigating between setting item screens (from S-C-2④ through to ST-L-1)-37-

KRB-5426c

Table 11-4 Setting items and display details of setting item screens (S-C-2④ to ST-L-1) (ground fault protection setting)External output
setting screen
numberSetting items and display details

S-C-2④

Setting item selection switching-

Ground fault protection setting
item selection/setting-

ST-K-1

Display

Item

Selection

Ground fault
protection
mode setting

TRIP/ALARM/OFF

DGR CURR

Ground fault
current setting-

DGR VOLT

Ground fault
voltage setting-

DGR TIME

Ground fault
detection time
setting-

DGR PHASE

Phase
difference
setting--

ST-L-1
RY1
RY2
RY3
RY4

ON/OFF
External output
setting

ON/OFF
ON/OFF
ON/OFF

Remarks

This screen is displayed when you press the [D]arrow button once at the S-C-2③ screen (shownon page 35).
The figure on the previous page shows the statein which ground fault current setting (DGR
CURR) is selected.
You can use the [U] or [D] arrow button to selecta desired setting item.
You can select one of the modes shown to the left
by pressing the [U] arrow button once and thenthe [R] arrow button at this screen. Use the [U] or[D] arrow button to switch the mode to be set.
This setting item specifies the ground fault
current value at which operation is output.
You can select this setting item by pressing the(1.0-10.0)mA[R] arrow button once at this screen. Use the [U]or [D] arrow button to increment or decrement
the value to be set.
This setting item specifies the ground fault
voltage value at which operation is output.
You can select this setting item by pressing the(0.050-0.150)[D] arrow button once and then the [R] arrowx V0nbutton at this screen.
Use the [U] or [D] arrow button to increment ordecrement the value to be set.
This setting item specifies the length of time
during which ground fault must be detected.
You can select this setting item by pressing the(0.1-10.0)s[D] arrow button twice and then the [R] arrow
button at this screen.
Use the [U] or [D] arrow button to increment ordecrement the value to be set.
This setting item specifies the phase difference
between current and voltage that is detected as aground fault.
You can select this setting item by pressing the(0-90)deg/OFF[D] arrow button three times and then the [R]arrow button at this screen.
Use the [U] or [D] arrow button to increment ordecrement the value to be set.
This screen is displayed when you press the [D]arrow button with “DGR PHASE” selected on the
ST-K-1 screen.
Use the [U] or [D] arrow button to select the item
to be set, and press the [R] arrow button and thenchange the output settings.
The setting procedure is the same as that
described on page 20.
This setting item specifies whether to output toterminal number 1.
This setting item specifies whether to output toterminal number 4.
This setting item specifies whether to output toterminal number 7.
This setting item specifies whether to output toterminal number 10.
-

MODE

Ground fault protection
output setting item
selection/setting

KRB-5426c

Setting range-38-

7-4-3-4. Navigating between setting item screens (from S-D-1 through to ST-W-1)
Figure 17 shows how to navigate between setting item screens (from S-D-1 through to ST-N2-1). See Table 12 for items that are
actually displayed on the screen.

Screentransitiondiffers

according to the TEMPSENSOR(temperature

sensor type) setting.
 When RTD is set
ST-M-1-1 → ST-M2-1* In the ST-M-1-1 screen,
setting

item“SENSOR

TYPE” is fixed as PTC.
This

settingcannotbechanged.
 When THERMISTOR is
set
ST-M-1-2 → ST-O-1* In the ST-M-1-2 screen,
setting

item“SENSOR

TYPE” can be set to either
PTC or NTC.

You can set each item inthe same way as (a).

S-D-2①Figure 17 Navigating between setting item screens (from S-D-1 through to ST-N2-1)-39-

KRB-5426c

Table 12 Setting items and display details of setting item screens (S-D-1 to ST-N2-1) (temperature detection setting)
ScreennumberS-D-1

Setting items and display details
Display
Item
Initial display of setting mode

ST-D-2

Setting item selection switching

ST-M-1

Temperature detection setting
item selection/setting

Selection-

Setting range

Remarks-

See page 25.
This screen is displayed when you press the [D] arrow button
once at the S-D-1 screen (shown on page 25).
Use the [U] or [D] arrow button to select a desired setting item.
The figure on the previous page shows the state in which
temperature sensor type setting (TEMP SENSOR) is selected.
You can use the [U] or [D] arrow button to select a desired setting
item.
The screen differs according to the temperature sensor type. The
ST-M-1-1 screen is displayed when the temperature sensor type is"RTD" and the ST-M-1-2 screen is displayed when thetemperature sensor type is "THERMISTOR".
When the temperature sensor type is "RTD", the "PTC" setting isfixed and cannot be changed.
The screen differs according to the temperature sensor type. The
ST-M2-1 screen is displayed when the temperature sensor type is"RTD" and the ST-O-1 screen is displayed when the temperature
sensor type is "THERMISTOR".
You can select one of the modes shown to the left by pressing the[R] arrow button at this screen. Use the [U] or [D] arrow button
to switch the mode to be set.

NTC/PTC

ST-M-1-1
ST-M-1-2

SENSOR
TYPE

Temperature sensor
characteristic setting-

ST-M2-1
ST-O-1

Temperature level 1 setting item
selection/setting

MODE

ST-M2-1

ST-O-1

Temperature level 1
mode setting

TRIP/ALARM/OFF-(0-250)℃(When the temperature
sensor type is "RTD")-(0.1-30.0) kΩ
(When the temperature
sensor type is"THERMISTOR")TEMPL1

OHM1

Temperature level 1
detection
temperature setting

ST-M2-1
ST-O-1

TEMPL1
TIME

Temperature level 1
temperaturedetection time
setting(0-60)sTemperature level 1
output setting item
selection/setting

ST-M3-1

RY1
RY2
RY3

External output
setting

RY4-

ON/OFF-

ON/OFF-

ON/OFF-

ON/OFF-

Temperature level 2 setting item
selection/setting

MODE
ST-N-1

TEMPL2
OHM2

Temperature level 2
mode setting-

TRIP/ALARM/OFF-

Temperature level 2
detection
temperature setting-

TEMPL2TIME

Temperature level 2
temperaturedetection time
setting-

Temperature level 2
output setting item
selection/setting

ST-N2-1

RY1
RY2
RY3
RY4

KRB-5426c

ON/OFF
External output
setting

ON/OFF
ON/OFF
ON/OFFYou can select this setting by pressing the [D] arrow button once
and then the [R] arrow button at this screen.
Use the [U] or [D] arrow button to increment or decrement thevalue to be set.

This setting item specifies the length of time during which
temperature must be detected.
You can select this setting item by pressing the [D] arrow button
twice and then the [R] arrow button at this screen.
Use the [U] or [D] arrow button to increment or decrement thevalue to be set.
This screen is displayed when you press the [D] arrow button
with “TEMPL1 TIME” selected on the ST-M2-1 or ST-O-1
screen.
Use the [U] or [D] arrow button to select the item to be set, andpress the [R] arrow button and then change the output settings.
The setting procedure is the same as that described on page 20.
This setting item specifies whether to output to terminal number
1.
This setting item specifies whether to output to terminal number
4.
This setting item specifies whether to output to terminal number
7.
This setting item specifies whether to output to terminal number
10.
This screen is displayed when you press the [D] arrow button
with “RY4” selected on the ST-M3-1 screen.
This screen on the previous page is displayed when thetemperature sensor type is "RTD".
When the temperature sensor type is “THERMISTOR”, “OHM2”(unit: kΩ) is displayed as the detection temperature setting item.
You can select one of the modes shown to the left by pressing the[U] arrow button and then the [R] arrow button at this screen.
Use the [U] or [D] arrow button to switch the mode to be set.

(0-250)℃(When “RTD” is selected) You can select this setting by pressing the [R] arrow button at thisscreen. Use the [U] or [D] arrow button to increment or(0.1-30.0) kΩ
(When “THERMISTOR” is decrement the value to be set.
selected)
This setting item specifies the length of time during which
temperature must be detected.
You can select this setting item by pressing the [D] arrow button(0-60)sonce and then the [R] arrow button at this screen.
Use the [U] or [D] arrow button to increment or decrement thevalue to be set.
This screen is displayed when you press the [D] arrow button
with “TEMPL2 TIME” selected on the ST-N-1 screen.
Use the [U] or [D] arrow button to select the item to be set, andpress the [R] arrow button and then change the output settings.
The setting procedure is the same as that described on page 20.
This setting item specifies whether to output to terminal number
1.
This setting item specifies whether to output to terminal number
4.
This setting item specifies whether to output to terminal number
7.
This setting item specifies whether to output to terminal number
10.

-40-

Figure 17-1 shows how to navigate between setting item screens (from S-D-2① through to ST-S-1). See Tables 12-1 and 12-2 foritems that are actually displayed on the screen.

S-D-2

You can set each
item in the same
way as (a).

S-D-2③

ST-T-1Figure 17-1 Navigating between setting item screens (from S-D-2① through to ST-S-1)-41-

KRB-5426c

Table 12-1 Setting items and display details of setting item screens (S-D-2① to ST-Q2-1)(open-phase protection setting)
Screennumber
ST-D-2①

Setting items and display details
Display
Item

Selection

Setting range

Setting item selection switching--

Open-phase protection setting item
selection/setting

-

-

MODE

Open-phase protection
mode setting

TRIP/ALARM/OFF-

P/L CURR

Open-phase current
setting-0.50 × ln

ST-Q-1
U/B RATIO

Current unbalancefactor setting-(0.30-0.65)
x In

P/L TIME

Open-phase detection
time setting-(0.5-5.0)s--

ON/OFF
ON/OFF
ON/OFF
ON/OFF-

Open-phase protection
output setting item selection/setting
ST-Q2-1
RY1
RY2
RY3
RY4

External output setting

Remarks
This screen is displayed when you press the [D] arrow button once at
the S-D-2 screen (shown on page 39).
Use the [U] or [D] arrow button to select a desired setting item.
The figure on the previous page shows the state in which open-phase
protection mode setting (MODE) is selected.
You can use the [U] or [D] arrow button to select a desired setting
item.
You can select one of the modes shown to the left by pressing the [U]arrow button three times and then the [R] arrow button at this screen.
Use the [U] or [D] arrow button to switch the mode to be set.
This value is fixed.
This setting item specifies the current unbalance factor at which
operation is output.
You can select this setting item by pressing the [U] arrow button
once and then the [R] arrow button at this screen.
Use the [U] or [D] arrow button to increment or decrement the value
to be set.
This setting item specifies the length of time during which
open-phase must be detected.
You can select this setting item by pressing the [R] arrow button at
this screen.
Use the [U] or [D] arrow button to increment or decrement the value
to be set.
This screen is displayed when you press the [D] arrow button with
“P/L TIME” selected on the ST-Q-1 screen.
Use the [U] or [D] arrow button to select the item to be set, and press
the [R] arrow button and then change the output settings.
The setting procedure is the same as that described on page 20.
This setting item specifies whether to output to terminal number 1.
This setting item specifies whether to output to terminal number 4.
This setting item specifies whether to output to terminal number 7.
This setting item specifies whether to output to terminal number 10.

Table 12-2 Setting items and display details of setting item screens (S-D-2② to ST-S-1)(undercurrent protection setting)
Screennumber
ST-D-2②

Setting items and display details
Display
Item

Selection

Setting item selection switching-

Undercurrent protection setting item
selection/setting

-

MODE

Undercurrent
protection
mode setting

L/C CURR(LOW
CURRENT)

Undercurrent setting-

L/C TIME

Undercurrent
detection
time setting-

L/C INHIBITTIME

Undercurrent
detection
disabled time
setting-

ST-R-1

TRIP/ALARM/OFFL/C DEAD
BAND-

Undercurrent protection
output setting item selection/setting-

ST-S-1
RY1
RY2
RY3
RY4

KRB-5426c

External output setting

ON/OFF
ON/OFF
ON/OFF
ON/OFF

Setting range

Remarks

This screen is displayed when you press the [D] arrow button once at
the S-D-2① screen (shown on page 41).
Use the [U] or [D] arrow button to select a desired setting item.
The figure on the previous page shows the state in which theundercurrent setting (L/C CURR) in this screen is set to 1.00.
You can use the [U] or [D] arrow button to select a desired setting item.
You can select one of the modes shown to the left by pressing the [U]arrow button three times and then the [R] arrow button at this screen.
Use the [U] or [D] arrow button to switch the mode to be set.
This setting item specifies the undercurrent value at which operation is
output.
(0.20-0.90)
You can select this setting item by pressing the [R] arrow button once at
xIn
this screen. Use the [U] or [D] arrow button to increment or decrement
the value to be set.
This setting item specifies the length of time during which undercurrent
must be detected.
You can select this setting item by pressing the [U] arrow button once
(0.5,1-60)s
and then the [R] arrow button at this screen.
Use the [U] or [D] arrow button to increment or decrement the value tobe set.
You can select this setting item by pressing the [R] arrow button at thisscreen.
(0.0-30.0)s
Use the [U] or [D] arrow button to increment or decrement the value tobe set.
You can select this setting item by pressing the [R] arrow button at this
(0.005-0.050) screen.
xIct
Use the [U] or [D] arrow button to increment or decrement the value tobe set.
This screen is displayed when you press the [D] arrow button with “L/C
DEAD BAND” selected on the ST-R-1 screen.
Use the [U] or [D] arrow button to select the item to be set, and press
the [R] arrow button and then change the output settings.
The setting procedure is the same as that described on page 20.
This setting item specifies whether to output to terminal number 1.
This setting item specifies whether to output to terminal number 4.
This setting item specifies whether to output to terminal number 7.
This setting item specifies whether to output to terminal number 10.
--42-

Figure 17-2 shows how to navigate between setting item screens (from S-D-2④ through to ST-X2-1). See Table 12-3 for items thatare actually displayed on the screen.

ST-N2-1

S-D-2②

You can set each
item in the same
way as (a).

S-D-2④

Figure 17-2 Navigating between setting item screens (from S-D-2④ through to ST-X2-1)-43-

KRB-5426c

Table 12-3 Setting items and display details of setting item screens (ST-T-1 to ST-U-1) (undercurrent protection setting)
ScreennumberSetting items and display details
Display
Item
Current protection setting item
selection/setting

Selection-

MODE

Current
protection
mode setting

TRIP/ALARM/OFF

H/C
CURR(HIGH
CURRENT)

Current value
setting-

H/C TIME

Current detection
time setting 2-

Current detection
H/C INHIBIT
disabled time
TIME
setting 2-

H/C DEAD
BAND-

Undercurrent protection output
setting item selection/setting-

ST-T-1

ST-U-1RY1
RY2
RY3

ON/OFF
External output
setting

RY4

ON/OFF
ON/OFF
ON/OFF

Setting range

Remarks

The figure on the previous page shows the state in whichcurrent value setting (H/C CURR) is selected.
You can use the [U] or [D] arrow button to select adesired setting item.
You can select one of the modes shown to the left bypressing the [U] arrow button three times and then the[R] arrow button at this screen. Use the [U] or [D] arrow
button to switch the mode to be set.
This setting item specifies the undercurrent value atwhich operation is output.
(0.20-1.50) x In You can select this setting item by pressing the [R] arrow
button once at this screen. Use the [U] or [D] arrow
button to increment or decrement the value to be set.
This setting item specifies the length of time during
which undercurrent must be detected.
You can select this setting item by pressing the [D] arrow(0.5,1-60)s
button once and then the [R] arrow button at this screen.
Use the [U] or [D] arrow button to increment ordecrement the value to be set.
You can select this setting item by pressing the [R] arrow
button at this screen.
(0.0-30.0)s
Use the [U] or [D] arrow button to increment ordecrement the value to be set.
You can select this setting item by pressing the [R] arrow(0.005-0.050) button at this screen.
xIct
Use the [U] or [D] arrow button to increment ordecrement the value to be set.
This screen is displayed when you press the [D] arrow
button with “H/C DEAD BAND” selected on the ST-T-1
screen.
Use the [U] or [D] arrow button to select the item to be
set, and press the [R] arrow button and then change theoutput settings.
The setting procedure is the same as that described on
page 20.
This setting item specifies whether to output to terminal
number 1.
This setting item specifies whether to output to terminal
number 4.
This setting item specifies whether to output to terminal
number 7.
This setting item specifies whether to output to terminal
number 10.
-

Table 12-4 Setting items and display details of setting item screens (S-D-2③ to ST-X2-1) (open-phase protection setting)
ScreennumberSetting items and display details
Display
Item

ST-D-2③ Setting item selection switching

ST-X-1

MODE

Open-phase
protection
mode setting

Open-phase protection output
setting item selection/setting

ST-X2-1

RY1
RY2
RY3
RY4

KRB-5426c

External output
setting

Selection

Setting range--

TRIP/ALARM/OFF

-

-

-

ON/OFF-

ON/OFF-

ON/OFF-

ON/OFF--44-

Remarks
This screen is displayed when you press the [D] arrow
button once at the S-D-2② screen (shown on page 41).
Use the [U] or [D] arrow button to select a desired setting
item.
You can select one of the modes shown to the left bypressing the [R] arrow button at this screen. Use the [U]or [D] arrow button to switch the mode to be set.
Use the [U] or [D] arrow button to select the item to be
set, and press the [R] arrow button and then change theoutput settings.
The setting procedure is the same as that described on
page 20.
This setting item specifies whether to output to terminal
number 1.
This setting item specifies whether to output to terminal
number 4.
This setting item specifies whether to output to terminal
number 7.
This setting item specifies whether to output to terminal
number 10.

Figure 17-3 shows how to navigate between setting item screens (from S-D-2④ through to ST-W-1). See Table 12-5 for items thatare actually displayed on the screen.

S-D-2③You can set each
item in the same
way as (a).

Figure 17-3 Navigating between setting item screens (from S-D-2④ through to ST-W-1)-45-

KRB-5426c

Table 12-5 Setting items and display details of setting item screens (S-D-2④ to ST-W-1)(external anomaly protection setting)
ScreennumberSetting items and display details
Display
Item

Selection

Setting range

S-D-2④

Setting item selection switching

-

-

ST-V0

MODE

TRIP/ALARM/OFF

-

-

-

ON/OFF-

ON/OFF-

ON/OFF-

ON/OFF-

TRIP/ALARM/OFF

-

-

-

ON/OFF-

ON/OFF-

ON/OFF-

ON/OFF-

External anomaly
protection 1
mode setting

External anomaly protection 1
output setting item
selection/setting

ST-V-1

RY1
RY2
RY3

External output
setting

RY4

ST-W0

MODE

External anomaly
protection 2
mode setting

External anomaly protection 2
output setting item
selection/setting

ST-W-1

RY1
RY2
RY3
RY4

KRB-5426c

External output
setting-46-

Remarks
This screen is displayed when you press the [D] arrow
button once at the S-D-2③ screen (shown on page 43).
Use the [U] or [D] arrow button to select a desired setting
item.
You can select one of the modes shown to the left bypressing the [R] arrow button at this screen. Use the [U]or [D] arrow button to switch the mode to be set.
Use the [U] or [D] arrow button to select the item to be
set, and press the [R] arrow button and then change theoutput settings.
The setting procedure is the same as that described on
page 20.
This setting item specifies whether to output to terminal
number 1.
This setting item specifies whether to output to terminal
number 4.
This setting item specifies whether to output to terminal
number 7.
This setting item specifies whether to output to terminal
number 10.
This screen is displayed when you press the [D] arrow
button with “RY4” selected on the ST-V-1 screen. You
can select one of the modes shown to the left by pressing
the [R] arrow button at this screen. Use the [U] or [D]arrow button to switch the mode to be set.
Use the [U] or [D] arrow button to select the item to be
set, and press the [R] arrow button and then change theoutput settings.
The setting procedure is the same as that described on
page 20.
This setting item specifies whether to output to terminal
number 1.
This setting item specifies whether to output to terminal
number 4.
This setting item specifies whether to output to terminal
number 7.
This setting item specifies whether to output to terminal
number 10.

7-5. Navigating between Maintenance Item Screens (from MA-A-1
through to MA-I-2)
Figure 18 shows how to navigate between maintenance item screens (from MA-A-1 through to MA-E-1). See Tables 13 and 13-1
for items that are actually displayed on the screen.

Test ends or [L]pressed to cancel

isBlinking frame is 400ms cycle[E] ispressed to
execute or[L] ispressed tocancelRefer to "7-7. Function
Test
(from

and

Relay

Test

MA-B-1to

AL-A-1)".

[E] ispressed toerase logs
or [L] ispressed tocancel[E] ispressed toerase logs
or [L] ispressed tocancelWhen you navigate from the MA-A-1① screen to the MA-D-1

MA-A-1②

screen, your password needs authentication. Refer to 7-4-2.

Figure 18 Navigating between maintenance item screens (from MA-A-1 through to MA-E-2)-47-

KRB-5426c

Table 13 Setting items and display details of maintenance item screens (MA-A-1 to MA-C-2)
Screen number

Setting items and display details

Selection

Setting range

MA-A-1

Maintenance items

-

-

-

-

-

-

-

-

Protective function activation test item selection
Motor winding
THERMAL
temperature
protection activation
Overload protection
O/CL1-JAM
activation
Short-circuit
O/CL2-SHORT
protection activation

MA-B-1TRIP/
NON TRIP-

Protective function activation test start
check

-

-

MA-B2-1

Protective function activation test start--

MA-C-1

Relay activation test item selection
RY1
Relay 1
RY2
Relay 2RY3Relay 3MA-B-2

Relay activation setting

MA-B-3RY4MA-C-2----

Relay 4

Relay activation test start check

Remarks
See page 15.
The figure on the previous page shows the state in which therelay activation test item (RELAY TEST) is selected.

This screen allows you to conduct an activation test for the
motor winding temperature protection, overload protection,or short-circuit protection function.
Use the [U] or [D] arrow button to switch the item to be
selected.
The figure on the previous page shows the state in which therelay activation setting item (RELAY TEST) is selected forthe motor winding temperature protection function.
Use the [U] or [D] arrow button to switch the item to be set.
TRIP: When the relay is activated, both relay contact output
and the indicator on the operation panel turn on.
NON TRIP: When the relay is activated, only the indicatoron the operation panel turns on without turning on relay
contact output.
This screen is displayed when you press the ENTER button
after setting the above item.
This screen is displayed when you press the ENTER button
again with the MA-B-3 screen displayed, and a protectivefunction activation test starts. When the test finishes, thedisplay returns to the MA-B-1 screen.
This screen allows you to select the relay for which anactivation test is to be conducted.
(The figure on the previous page shows the state in which
Relay 1 (RY 1) is selected.)
Use the [U] or [D] arrow button to switch the item to be
selected.
This screen is displayed when you press the ENTER button
after selecting the relay for which an activation test is to be
conducted, in the above screen. Pressing the ENTER button
again starts a relay activation test. When the test finishes, thedisplay returns to the MA-C-1 screen.

Table 13-1 Setting items and display details of maintenance item screens (MA-A-1① to MA-D-2)(historical data clearing)
ScreennumberSetting items and display details

MA-A-1①

Maintenance items
Historical data clearing item selection
TRIP HISTORY
Trip activation history
ALARM HISTORY
Alarm activation history

MA-D-1

MA-D-2EVENT HISTORY

Event occurrence history

MAX DATA

Maximum value record

History clearing start check and history clearing start

Remarks
This screen is displayed when you press the [D] arrow button once at the MA-A-1
screen (shown on page 47).
The figure on the previous page shows the state in which the historical data clearing
item (DATA CLEAR) is selected.
Use the [U] or [D] arrow button to switch the item to be cleared. *1
This setting item clears all trip activation histories up to the present time.
This setting item clears all alarm activation histories up to the present time.
This setting item clears all event occurrence histories (trip activation histories, alarm
activation histories, reset operation histories, and external input histories) up to thepresent time.
This setting item clears all max phase current and max starting current values up to thepresent time
This screen is displayed when you press the ENTER button after selecting the history
item to be cleared, in the above screen.
Pressing the ENTER button again clears the selected data.

*1: When you navigate from the MA-A-1① screen to the MA-D-1 screen, your password needs authentication. Refer to "7-4-2.
Navigating between password setting/authentication screens".
Table 13-2 Setting items and display details of maintenance item screens (MA-E-1 to MA-E-2)(measurement data clearing)
Screen No.

MA-E-1

MA-E-2

Setting items and display details
Measurement data clearing item selection
THERMAL CAPACITY
Motor heat capacity
LAST START PERIOD
Startup time
LAST START MAX I
Starting current
TOTAL RUN TIME
Operating time
TOTAL NUMBER OF STARTS
Operation count
Measurement data clearing start check and measurement
data clearing start

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Remarks
This setting item clears all motor heat capacity data up to the present time.
This setting item clears all startup time data up to the present time.
This setting item clears all starting current data up to the present time.
This setting item clears all operating time data up to the present time.
This setting item clears all operation count data up to the present time.
This screen is displayed when you press the ENTER button after selecting themeasurement data item to be cleared, in the above screen. Pressing the ENTER
button again clears the selected data.

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Figure 18-1 shows how to navigate between maintenance item screens (from MA-A-1② to MA-H-41). For items that are actuallydisplayed on the screen, refer to Table 13-3 and "7-8. History and Trip/Alarm Activation Display Screens".

MA-A-1②

Figure 18-1 Navigating between maintenance item screens (from MA-A-1② through to MA-H-41)-49-

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Table 13-3 Setting items and display details of maintenance item screens (MA-A-1② to MA-H-41) (history display)
Screen No.
MA-A-1②

MA-F-1
MA-G-1
MA-H-1MA-F-2 toMA-F-21MA-G-2 toMA-G-21

MA-H-2 toMA-H-21

Setting items and display details

Remarks
This screen is displayed when you press the [D] arrow button
once at the MA-A-1 screen (shown on page 47).
Maintenance items
The figure on the previous page shows the state in which history
display (HISTORY) is selected.
This screen displays the occurrence time, cause, phase,
LATEST TRIP
Trip activation data
concerned value, and operating time for the latest trip activation.
This screen displays the occurrence time, cause, phase,
LATEST ALARM
Alarm activation data
concerned value, and operating time for the latest alarm
activation.
This screen displays the occurrence time and description for the
LATEST EVENT
Event occurrence data
latest event that has occurred.
This screen displays the occurrence times, causes, phases,
concerned values, and operating times for the recorded trip
TRIP HISTORY
Trip activation history
activations (up to 100 events) in chronological order. The screen
shown on the previous page displays five histories. Use the [U]or [D] arrow button to switch the histories to be displayed.
This screen displays the occurrence times, causes, phases,
concerned values, and operating times for the recorded alarm
ALARM HISTORY
Alarm activation history activations (up to 100 events) in chronological order. The screen
shown on the previous page displays five histories. Use the [U]or [D] arrow button to switch the histories to be displayed.
This screen displays the occurrence times, causes, phases,
concerned values, and operating times for the recorded events
Eventoccurrence
EVENT HISTORY(up to 200 events) in chronological order. The screen shown on
history
the previous page displays five histories. Use the [U] or [D]arrow button to switch the histories to be displayed.

Figure 18-2 shows how to navigate between maintenance item screens (from MA-A-1③ to MA-I-2). See Table 13-4 for items thatare actually displayed on the screen. For specifications without communication function, neither “COMM.” in the MA-A-1③ screen
nor the MA-I-1 and MA-I-2 screens are displayed.

MA-A-1②

Figure 18-2 Navigating between maintenance item screens (from MA-A-1③ through to MA-I-2)

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Table 13-4 Setting items and display details of maintenance item screens (MA-A-1③ to MA-I-2)(communication status display (for specifications with communication facility))
Screen number

Setting items and display details

Remarks

MA-A-1③

Maintenance items

MA-I-1

Status of communication with communication device(on the reception side)

MA-I-2

Status of communication with communication device(on the transmission side)-51-

This screen is displayed when you press the [D] arrow button once at the
MA-A-1② screen (shown on page 49). The figure above shows the statein which communication status display (COMM.) is selected.
When data is received normally, the count in the "OK" field on thescreen is incremented. When data is not received normally, the count in
the "NG PARITY" or "NG CRC" field on the screen is incremented.
When data is sent normally, the count in the "OK" field on the screen isincremented. When data is not sent normally, the count in the "NG
FUNCTION", "NG ADDRESS", or "NG DATA" field on the screen isincremented.

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7-6. Screen Transition in the Event of Trip or Alarm (TR-A-1, AL-A-1)
Figures 19 and 19-1 show the respective screens in the event of trip and alarm activations. Pressing [M] returns the display to the
pre-activation screen. For the display details of the trip or alarm activation screen, refer to "7-8. History and Trip/Alarm Activation
Display Screens".

Screen before trip occurs

Figure 19 Screen transition in the event of trip (TR-A-1)

Screen before alarm occurs

Figure 19-1 Screen transition in the event of alarm (AL-A-1)

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7-7. Function Test and Relay Test (from MA-B-1 to MA-C-2)
The protective relay allows the user to conduct two types of test: function test and relay test.
(1) Function test (from MA-B-1 to AL-A-1)
You can conduct function tests for overload protection (O/C L1-JAM) and short-circuit protection (O/C L2-SHORT). These tests
are activation tests using values equivalent to 1.2 times the set values. You can also conduct each function test by selecting TRIP
or NON TRIP. Table 14 shows the LCD screen, LED, relay activation, and log update statuses after each test. Figure 20 shows
how to conduct each test.
Table 14 Statuses after function test
Test conducted

MODE setting

Screen display

TRIP

TRIP

Screen in the event of trip
activation (TR-A-1)
Screen in the event of alarm
activation (AL-A-1)
MA-B-1
MA-B-1ALARM
NON TRIP

TRIP
ALARM

[TRIP ALARM] LED
statusLit in red

Relay
activation
Activated

Log update

Blinking in red

Activated

Updated

Lit in red
Blinking in red

Not activatedNot activatedNot updated
Not updated

Updated

Test is suspended (*2)
or terminatedTest
is runBlinking frame is 400ms cycle"TRIP" or "NON TRIP"
can be selected.

To

conduct

short-circuit

a

test

for

To turn off the LED or relay output after the test, press [R].

protection(O/C L2-SHORT), select"O/C

L2-SHORT"

bypressing [D].
Figure 20 Screen transition for function test (from MA-B-1 to AL-A-1)*1: In the following cases, after [E] is pressed, no test is started and the display returns to the MA-B-1 screen.
・When the function to be tested is set to OFF・When an applied current value equal to or greater than Ict×10% is detected
・When relay output is in progress*2: In the following cases, the test is suspended and the display returns to the MA-B-1 screen.
・When an applied current value equal to or greater than Ict×10% is detected
・When relay output occurs
・When [E] is pressed-53-

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(2) Relay test (from MA-C-1 to MA-C-2)
You can conduct relay output tests for RY1 to RY4 as shown in Figure 20-1. When relay output occurs, an "R" mark appears on thebottom right of the screen. To perform a reset, press [R]. When pulse output is used, an automatic reset occurs.

"RY1" to "RY4" can be selected.

Figure 20-1 Screen transition for relay test (from MA-C-1 to MA-C-2)*1: Even if you press [E] during relay output, the relay will not be activated.

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7-8. History and Trip/Alarm Activation Display ScreensFigure 21 shows the latest trip/alarm history screen, trip/alarm history list screen, and trip/alarm activation display screen, andTables 15 and 15-1 explain the items displayed on these screens.
Latest history screen

History list screen

Trip/alarm activation display screen

Figure 21 Latest history screen, history list screen, and trip/alarm activation display screen
Tables 14 Items displayed on the latest trip/alarm history screen, trip/alarm history list screen, and trip/alarm activation display screen
No.
①
②
③
④

Display item
Indicates the date and time when trip or alarm activation was displayed.
Indicates the message for the cause of the trip or alarm activation display. For details, see Table 15-1.
Indicates the phase where trip or alarm activation occurred.
Indicates the value at which trip or alarm activation was displayed. For the respective units, see Table 15-1.
Indicates the occurrence time period that caused trip or alarm activation to be displayed. For the respective units,
see Table 15-1.

⑤

Table 15-1 Messages for the cause of each activation, and the units of values and times displayed② Message (CAUSE)
Trip/alarm
activation display
screen④ Value thatcaused trip/alarm
activation to be
displayed (VALUE)⑤ Occurrence time
period that caused
trip/alarm activation to
be displayed (TIME)MSTMAX ST TIME---s

TOO MANY ST

TMS

TOO MANY ST

---

min

Low Current

LOW CURRLC

LOW CURRAsHigh Current

HIGH CURRHC

HIGH CURRAsLoad Increase

LOAD INCR

LI

LOAD INCRAs

O/C Lvl1 –Jam

OVER CURR L1

OC1

OVER CURR L1

As

O/C Lvl2 –Short

OVER CURR L2

OC2OVER CURR L2

As

Thermal Lvl1

THERMAL L1

TM1

THERMAL L1%s

Thermal Lvl2

THERMAL L2

TM2

THERMAL L2%s

Unbalance Lvl1

UNBAL L1UB1

UNBAL L1%s

Unbalance Lvl2

UNBAL L2UB2

UNBAL L2

%

s

DGR

DGR

DGR

DGR

mA

s

Temperature Lvl1

TEMP L1

TP1

TEMP L1kΩ or ℃s

Temperature Lvl2

TEMP L2

TP2

TEMP L2kΩ or ℃s

Phase Loss

PHASE LOSSPLS

PHASE LOSS

None or A

Phase sequence

PHASE SEQPSQ

PHASE SEQA

External Fault 1
External Fault 2

EXT FAULT 1
EXT FAULT 2

EF1
EF2

EXT FAULT 1
EXT FAULT 2

Cause oftrip/alarm
activation display

Latest trip history
screenTrip history list
screenMax Start TimeMAX ST TIME

Too Many Starts-55-

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Figure 21-1 shows the latest event history screen and event history list screen, and Tables 15-2 and 15-3 explain the items displayedon these screens.
Latest event history screen

Event history list screen

Figure 21-1 Latest event history screen and event history list screen

Table 15-2 Items displayed on the latest event history screen and event history list screen
No.

Display item⑥

Date and time when an event occurred⑦

Indicates the messages for each event. For details, see Table 14-3.

Table 15-3 Messages for each event
Messages in ⑦
Event
Latest event history screen

Event history list screen

Trip activation

TRIP

TRIP

Alarm activation

ALARM

ALARM

External reset 1

EXT RESET 1

EXT RESET 1External reset 2

EXT RESET 2

EXT RESET 2

Trip activation history reset

TRIP HISTORY RESETTRIP HISTORY RESET

Alarm history reset

ALARM HISTORY RESETALARM HISTORY RESET

Reset button pressed

RESET BUTTON PRESSEDRESET BUTTON PRESSED

Relay test executed

RY TESTRY TEST

7-9. Responses to Abnormal Events
 If internal CT circuit wiring is broken or another similar problem occurs, the system will blink the “TRIP” or “ALARM” LEDwithout outputting data and will be reset automatically when it becomes normal. If the system is not reset automatically, contactus.
 In the following cases, values (set values or recorded values) are displayed as “---”.
 Values outside the setting range for each setting item
 Values within the setting range for each setting item that deviate from the specified step
However, when such values are set, they may be displayed normally by pressing the [U] or [D] arrow button so that the value falls
within the setting range. If values are not displayed normally, contact us.

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Circuit Breaker Division
6-13-47 Kamihigashi, Hiranoku, Osaka 547-0002, Japan
Tel: 81-6-6791-2763

Fax: 81-6-6791-2732

Web Site: http://www.terasaki.co.jp

E-mail: kiki-info@terasaki.co.jp

Published in Mar. 2020
The contents of this manual may be subject to change without notice.
Recycle paper used.

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