Inverter CAI Series(CAI 40/90 C Type)CAUTION
Carefully read the “Safety Precautions” in
the introduction before reading the textof the operation manual in order tothoroughly understand the contents forcorrect use.

Operation Manual

EM0102E-4

[Contents]
		 Safety Precautions.................................................................................... 1
1. Standard specifications........................................................................... 6
2. Outline drawing......................................................................................... 7
3. Installation................................................................................................... 8
4. Wiring............................................................................................................ 10
5. Operation..................................................................................................... 12
6. RS485 Serial Communication .............................................................. 15
7. Alarm output.............................................................................................. 22
8. Maintenance and inspection................................................................ 23
9. Precautions as to operation.................................................................. 24
10. Safety Guideline........................................................................................27[Check the contents of packing]AC INVERTER

Inveter
CAI40C/CAI90C

Operation
Manual[ Safety Precautions ]Carefully read this operation manual for correct use before installation,
operation, maintenance, and inspection. Thoroughly understand theinverter, safety information, and precautions before use.
Safety precautions are classified into "DANGER" and "CAUTION" in thismanual.

DANGER:	Improper handling entails danger,
possibly leading to death or serious
injury.

CAUTION:	Improper handling entails danger,
possibly leading to medium-degree orslight injury or property damage.

CAUTION may also cause serious
Matters classified underresults depending on the situation.
Be sure to strictly observe these safety precautions.
Precautions in general	Covers and safety shields have been removed in the illustrations in
the operation manual in order to show the details. Be sure to return
specified covers and safety shields to the original position before
operation. Operate the inverter in conformity with the operation
manual.
	The operation manual is subject to change for improvement of the
product, change in specifications, and easy use of the manual itself.
The operation manual No. will be renewed when a revised edition
is issued.
	Remodeling of the inverter by the customer is beyond the scope of
our warrantee, and we will not take responsibility for any result of
remodeling.

-1-(1) Confirmation of actual product

CAUTION
Do not operate the machine with a damaged inverter or an inverterwith some missing parts, otherwise injury may result.

(2) Installation

CAUTION
Attach the inverter to metal or other nonflammables, otherwise afire may break out.
Do not place the inverter near inflammables, otherwise a fire may
break out.
Do not hold the case at the front of the inverter, otherwise theinverter may drop, leading to injury.
Do not allow metal chips and other foreign substances to enter,otherwise a fire may break out.
Install the inverter on a floor strong enough to withstand theweight of the inverter according to the operation manual,
otherwise the inverter may drop, leading to injury.

-2-(3) Wiring

DANGER
Check that the input power is OFF before wiring, otherwise anelectric shock or fire may result.
Be sure to install a magnetic circuit breaker (MCB), otherwise a fire
may break out.
Be sure to ground the grounding terminal, otherwise an electric
shock or fire may result. (200 V-class Type D grounding)
Leave the wiring work to an electric engineer.
Be sure to install the inverter before wiring, otherwise an electric
shock or fire may result.
When connecting the emergency stop circuit, be sure to check theoperation of the circuit after wiring, otherwise injury may result.

CAUTION
Do not connect an AC power supply to the output terminals (U, V,
and W), otherwise injury or a fire may result.
Check that the voltage of the AC power supply coincides with thespecified input voltage of the inverter, otherwise injury or a fire may
result.
Do not subject the inverter to a withstand voltage test, otherwise
semiconductor elements may be broken.
Completely tighten terminal screws, otherwise malfunction, theinverter breakdown, or a fire may result.

-3-

(4) Operation

DANGERBe sure to attach the case cover before turning the power on. Do
not remove the case cover during power supply, otherwise anelectric shock may result.
Do not operate switches with wet hands, otherwise an electric
shock may result.
Do not touch the inverter terminal when power is being supplied
to the inverter although the machine is at rest, otherwise an electric
shock may result.
Trip resetting by turning the power on while the operation signal ison will make the machine resume operation suddenly. Check thatthe operation signal is off before turning the power on, otherwise
injury may result.

CAUTION
Do not touch the die-cast case and radiation fin, which become
very hot, otherwise skin burn may result.
The inverter permits easy operation setting from low to high speed.
Carefully check the allowable range of the motor and machine
before setting, otherwise injury may result.
Prepare a retention brake separately as necessary, otherwise injury
may result.
Do not check signals during operation, otherwise the equipment
may be broken.

-4-(5) Maintenance and inspection

DANGER
This inverter has a high-voltage terminal, which is dangerous. Do
not touch it, otherwise an electric shock may result.
Conduct maintenance or inspection five minutes or more after the
input power is turned off, otherwise an electric shock may result.
Leave maintenance and inspection to a specialist. Remove
accessories (watch, ring, etc.) before work, otherwise an electric
shock or injury may result.

CAUTION
Semiconductor elements are used in the inverter. Handle theinverter carefully, otherwise static electricity, etc. may break the
inverter.
Do not change wiring or attach/detach the panel while the poweris supplied, otherwise an electric shock, injury, or equipment
breakage may result.

(6) Others

DANGER
Do not remodel the inverter, otherwise an electric shock, injury, ora fire may result.

-5-

1. Standard specifications

Product nameApplicable motor
Applicable motor output (W)Standards
Frequency (Hz)Output capacity (VA)
Output rating Output current (A)Output voltage (V)Voltage (V)Frequency (Hz)Input current (A)Control method
Frequency setting
Torque boost
Over load durability
Acceleration/
Control
deceleration time
characteristics
Torque setting
Front panel switch
Input power
supplyCAI40CCAI90C3-phase induction motor
25/40
60/90
Conforming to CE mark and cUL
1.0~120Hz Note:1
106/152
212/3030.28/0.4
0.56/0.83-phase 200~240V(depend on power supply voltage)
1-phase 100~120 V ±10% or 200~240 V ±10%50/60 ±5%0.5~1.5
1.0~3.0
PWM control (Pattern: V/F)
Front panel volume or external volume
Low : 0 High : 8% (Dip switch setting)
150% output for 1 min.
0.05~30.0s Note:2High/Low (Dip switch setting)
Run/Stop switch and Forward/Reverse switch
Run/Stop command, Forward/Reverse command,
Input/Output signal
frequency command, free-run input, and alarm
signal output
Self-diagnosis trip, protection form overvoltage,
protection from instantaneous overcurrent,
protection from undervoltage, protection from
Details of alarmProtection
overload, protection of coolant from overheating,functionand electronic thermal
Alarm display
LED (blinking) for the front panel
Alarm output
Open collector
Cooling method
Self-cooling
Indoors, Below 1000m of altitude, without corrosive
Location of installation
gas, liquid, or dust
Degree of contamination
2
Ambient-10°C to +40°C without dew condensation orcondition
Ambient temperature
freezing
Storage temperature-20°C~60°C
Humidity
90%RH or lessNote: 1.	W hen driving the geared motor, use by frequency setting below the
maximum input speed of the gear.
2. No regenerative circuit for brakes is built in.

-6-

2. Outline drawing
Outline drawing

CAI40C
52.5

Weight of unit
0.30kg
2.7
8.0
60.0

1.3

125.1
137.1

52.5

AC INVERTER

MAX
RUN

FWD

80.0

MOTOR

MIN
STOP

100.0

ALARM

80.0
90.0

POWER

POWER

RS485
RS485

REV

.5

φ4

CAI90C
52.5

Weight of unit
0.47kg
2.7
8.0
60.0

125.1

1.3

137.1

52.5

AC INVERTER

MAX
RUN

FWD

80.0

MOTOR

MIN
STOP

100.0

ALARM

80.0
90.0

POWER

POWER

RS485
RS485

REV

.5

φ4

Unit: mm-7-

3. Installation
3.1 Installation dimensions/method
Refer to Fig.(a) when installing the inverter. The inverter of the installation
surface as shown in Fig.(b).
(DIN rail cannot be attached.)
Refer to p.7 for the outside dimensions.

AC

R

ERTE

INV

Fig.(a)
+1

90

+1

81 0

53 0

Fig.(b)Secure the inverter without a gap between the inverter and the mounting
surface by using the mounting hole in the inverter.
-8-

3.2 Place of installation

10cm

10cm

AC INVERTEAC INVERTE

R

5cm

R

5cm

10cm

5cm

10cm

	Set the inverter vertically andprovide a space for ventilation
around the inverter.

10cm

10cm

	Install in places with nocorrosive gas or grinding fluid.
	The inverter is not of awaterproofing structure.
Avoid outdoor use.

	Avoid hot or humid places orplaces with a large quantity ofdust, iron powder, or chips.

	Install the inverter in places
without vibration.
	Avoid continuous use ofresonance point.

	The ambient temperature shallbe within the range of -10 to+40°C.
	Avoid direct sunlight.

-9-4. Wiring
4.1 Standard connection diagram
Power supply（1-phase）
MCB

100V

100V~120Vor
200V~240V

N
200V

Motor output

U/T1

IM

CAI Inverter

V/T2
W/T3

External speed setting signal+V+10V10mA (MAX)

Frequency setting unit

Terminal for main circuit

Voltage input
DC 0~10V

Control input signal

ON/OFFCOM

Common+18V

Run/Stop

RUN

Forward/reverse rotation
Free-run stop/braking stop

4.7KΩ

F/R

4.7KΩ

MBS

4.7KΩ

+18V

+18V

AL

Alarm output

DC48V
COM

Terminal for control circuit (8pin)

VRF

VR: 1K~5KΩ

Terminal for control circuit
Shielded wire(or twisted wire)

RJ-11
1: +EV
2: GND6 1 3: SGRS-485 4: SG+
Communication port

50mA
MAX

4.2 In the case of sequence
RUN/STOP
FWD/REVMBS ONCOM

Recommended peripheral equipments
Magnetic circuit
breaker (MCB)
AC reactor
Noise filter
Frequency
setting unit (VR)Manufacturer
Model
Mitsubishi
BL-2C 6A
Electric
ET682WW-01
Sumitomo
ET681WW-01
Heavy
Industries
EVR-01- 10 -

Applicable CAI Inverter Model

CAI40C, CAI90C

CAUTION
4.3 Precautions as to wiring(1) Main circuit1) 	D o not connect the power input terminal and motor output
terminals (U, V, and W) reversely.
2) 	Do not ground the motor output terminals (U, V, and W). Check thatthe motor output terminals are not grounded before turning thepower on.
3) 	Be sure to turn off the power before wiring the main circuit terminal,
grounding terminal, and control terminal or when removing thewiring.
4) 	Do not short-circuit the motor output terminals (U, V, and W) witheach other. Check that motor output terminals are not shortcircuited with each other before turning the power on.
5) 	When operating the inverter, use a magnetic circuit breaker (MCB)
and a thermal relay (TH-RY) as necessary according to the standard
connection diagram. Select a magnetic circuit breaker and athermal relay that match the motor rating.
6) 	T he grounding terminal is inverter ground (FG). Use Type D
grounding (100Ω or less; Ø1.6 mm or less).
7) 	Do not install a power factor improved (phase-advanced) capacitor,
which may be broken by heating because of the high harmonics of
the inverter output.
8) 	B e sure to use a crimp terminal with insulation sheathing forconnection to the main circuit terminal (100 V, N, 200 V).
(2) Control circuit1) 	Do not apply voltage exceeding 48 VDC or current exceeding 50
mA to the output terminal (AL, COM), or do not apply voltage toreversed polarity.
2) 	Do not apply voltage to the input terminal (RUN. F/R. MBS) fromoutside.
3) 	When driving the relay directly by the output terminal (AL, COM),
install a flywheel diode (FD).
4) 	The grounding wire connected to the control circuit must be twistedor shielded wire.
5) Ground the shield of the shielded wire.
6) 	Separate the cable to be connected to the control circuit from thepower line.
7) 	Apply a screwdriver perpendicular to the terminal and tighten thewire.
- 11 -

5. Operation
5.1 Front panel
POWER LED
Lights while the power is ON.

ALARM LED
Blinks when the protective function
is in operation.
(Refer to p.22 for details.)
Potentiometer(Refer to p.14 for details.)

RUN/STOP Switch

Forward/Reverse Switch(Usable in the panel mode.
Refer to p.14 for details.)- 12 -

5.2 Internal panel

Accel/Decel Time(s)30
Accel/Decel Time knob(s)ACC/DES5X1
60Hz
REV ENLO TQUEHI THM
PANEL
LOCAL

X2
50Hz
REV DISHI
LO
EXT
REMO TE

5
0

0.05

POWER

OFF

ALARM

Enlarged
view

STOP
RESET

30(S)

5

10

Unit

ON

X1
1.
60Hz
2.
3. REV EN
4. LO TQUE
5. HI THM
PANEL
6.
LOCAL
7.

X2
50Hz
REV DISHILO
EXT
REMOTE

Setting
item

Switch setting

RUN• Dip switch setting
FWD

Setting
item

REV

Switch setting

50Hz

100%

60Hz
100%

100Hz

50Hz

100Hz

100%

60Hz

120Hz

Operation command
source setting

Reverse rotation control

120Hz

Low-torque output

High-torque output

60Hz

Electronic thermal setting

Max. output frequency

50Hz

Torque setting

100%

Reverse rotation
possible

Reverse rotation
impossible

Note: All settings are OFF when the product is shipped.

- 13 -For 40 and 90 W
40W: 0.4A
90W: 0.8A
For 25 and 60 W
40W: 0.28A
60W: 0.56A

Operation commandcontrol by front panel

Operation commandcontrol by externalterminal

< Try to operate >• When using the front panel for operation
Step 1

Power ON
(Power LED ON)

Step 2

Determine the direction ofrotation. (FWD or REV)

Step 3

Set to RUN.

Step 4

Set the speed of rotation.
(Ad j u s t m e nt u s i n g t h epotentiometer)

Front panel• When using the EXT mode for operation (Control input signal)
Power supply

ON
OFF

RUN

ON
OFF

F/R

ON
OFF

MBS

ON
OFF

Until POWER LED ON

FWD
Motor operation

STOP
REV

L1: accel/decel set time
L2: free-run stop time

Note: Caution to be exercised when external speed setting is used.
	The EXT mode permits the potentiometer on the front panel to control the
speed during external speed control. The set frequency at that time is thetotal of respective set frequencies. Set “MIN” when the potentiometer on thefront panel is not used.

- 14 -

6. RS485 Serial Communication
Serial communication with the external control device is possible using
the RS485 communication port (RJ11) on the back side for the inverter.
Pin assignment of RJ11 connector
No.
1
2
3
4
5
6

Signal
+15V
GND
SG–
SG+

Contents+15VdcGroundSend/Receive–
Send/Receive+-

UnusedReference
Power supply+15Vdc-

6.1 Specifications
Items
Transmission speed
Communication method
Synchronous method
Transmission code
Communication method
Compliant interface
Data bit length
Parity check
Stop bit length
Starting method
Waiting time
Connection form
Error check

Contents
9600 bit/s
Half duplex communication
Start-stop synchronous communication
ASCII Code
Serial transmission
RS485
7 bitsNone
2 bits
One-sided startup method by host-side
command
10ms
RS485
LRC checksum

Reference
Baud rate-

7, N, 2

1 : 31
2 bits

6.2 Connection Method
Controller
・PC
・PLC etc.

…
3

4

3

Inverter１

4

Inverter 2

3 4
Inverter 63

Up to 63 units can be connected the controller using RS485 serial communication.

- 15 -

6.3 Setting for the Inverter Address (DIP Switch)
For RS485 communication, set the DIP switch 7 to ON.
（In this case, you will not be able to drive on the front panel andterminals.）
DIP switch 1 to 6 is used to set the inverter address.
Refer to the following setting example.
RS485 communication (DIP switch 7: ON)・For address = 1 (See the right table.)(20×1) + (21×0) + (22×0) + (23×0) + (24×0) +(25×0) = 1
・For address = 23
(20×1) + (21×1) + (22×1) + (23×0) + (24×1) +(25×0) = 23
・For address = 63
(20×1) + (21×1) + (22×1) + (23×1) + (24×1) +(25×1) = 63

DIP Switch
No.

OFF
(×0)

ON
(×1)

Address
Setting

1

25

2

24

3

23

4

22

5

21

6

20

7

RS485

Note:	When the control mode is switched to the front panel or the terminal, theaddress is stored in the memory. (DIP switch 7: OFF)
When the parameter is reset, the address remains in the memory.
In the case of setting for the new address, DIP switch 7 is ON after power OFF.
Resetting the address and start the inverter.

6.4 Communication Procedure
Communication between the controller and the inverter is performed asfollows.
Reply data ② from the inverter will be replied after receiving data ① .
The inverter does not have active output.
Controller①②

CAI Inverter
Waiting time：10ms①②

Transmission data from the controller to CAI inverter
Transmission data from CAI inverter to the controller- 16 -

6.5 Communication Protocol
6.5.1 Frame Format Transmitted and Received
STX
ADR1
ADR0
CMD1
CMD0
DATA (n-1) to 0
LRC CHK1
LRC CHK0
END1

Start data ‘：’ (ASCII code/3AH)
Communication address:
Address information of 8 bits×2 that composes ASCII code
Command code:
Command information of 8 bits×2that composes ASCII code
Data structure:
8 bits×n data that composes ASCII code of 2n(n ≦ 25, ASCII code ＝ 50 Max.)LRC Checksum:
8 bits×2 checksum that composes ASCII code
END data: END1 ＝ CR（0DH）, END0=LF（0AH）

Note: ADR (Communication address) → Specify the inverter address 1 to 63.
CMD (Command code), DATA (Data format depends on CMD.)
CMD = 03H → Read Data, CMD = 06H → Write Data

ExampleCommand code 06H: Writing 1 data
Command code 03H: Reading N data (1 to 12)
Ex. Setting the frequency for the inverter (Address 1)
Ex. Reading 2 data from address 2102H for the
Frequency setting address: 2001H
inverter (Address 1)
60Hz(Decimal…6000 →Hexadecimal…1770H)
Transmission message
Receive message
Transmission message
Receive message
STX
‘:’
STX
‘:’
STX
‘:’
STX
‘:’
ADR1
‘0’
ADR1
‘0’
ADR1
‘0’
ADR1
‘0’
ADR0
‘1’
ADR0
‘1’
ADR0
‘1’
ADR0
‘1’
CMD1
‘0’
CMD1
‘0’
CMD1
‘0’
CMD1
‘0’
CMD0
‘3’
CMD0
‘3’
CMD0
‘6’
CMD0
‘6’
‘2’
‘2’
‘2’
‘0’
Starting
‘1’
‘0’
‘0’
Data
Number of
Data
data
address
data (Byte)
address‘0’‘0’‘0’address
‘4’
‘2’
‘1’
‘1’
‘1’
‘0’
‘1’
‘1’
‘7’
2102H
‘7’
‘0’
‘7’
‘7’
‘0’
Number of
Data
Dataread data
‘0’
‘0’
‘7’
‘7’
‘0’
2103H
‘0’
‘2’
‘0’
‘0’
‘0’
LRC CHK1‘D’
LRC CHK1‘7’LRC CHK1‘5’LRC CHK1‘5’LRC CHK0‘7’LRC CHK0‘1’
LRC CHK0‘1’
LRC CHK0
‘1’
END1
CR
END1
CR
END1
CR
END1
CR
END0
LF
END0
LF
END0
LF
END0
LF

- 17 -

6.5.2 Parameter Table
Address
Setting
0001
0002

Setting Data
(Decimal)Parameter Name

R/W

Data Contents

Recognition code of theinverterRated current
Parameter reset

R

Depend on the
inverter

-

R
R/W

Reset
50Hz
60Hz
100Hz
120Hz

10
0
1
2
3

0.05 to 30 (s)5~3000

Reverse NG
Reverse OKHigh
Low
25/60 (W)40/100 (W)
1 to 63
Depend on the
inverter
1.5 to 20.0 (V)
3.0 to 8.0 (V)RUN: FWD/STOP
F/R: REV/STOP
RUN: RUN/STOP
F/R: FWD/REV

0
1
0
1
0
1
01~63

0003

Max. output frequency
setting

R/W

0004

Acceleration/Deceleration
time

R/W

0005

Reverse setting

R/W

0006

Torque setting

R/W

0007

Electronic thermal

R/W

0008

Communication address

R

0009

Software version

R

0010
0011

Min. output voltage
Torque boost

R/W
R/W

0012

Terminal function setting

R/W

Note: R (Read), W (Write)- 18 -

Initial
#
#.#
0
1

500
1
1
1
1

-

#.#

15~200
30~80

15
80

0
1
1

6.5.3 List of Address
Items
Parametersof the Inverter

Write

Read

Address

Explanation
nnnn: Address for parameters
nnnnH(Set the address for parameters of the Inverter.)
00 : No function
01 : STOP
bit 0, 1
10 : RUN
11 : No function
2000H
bit 2, 3, 6 to 15
Unused (0)00 : Reserved
01 : Forward
bit 4, 5
10 : Reverse
11 : Switching the direction of rotation
2001H
Frequency
Ex. at 60Hz : 6000 (Decimal)
bit 0, 2 to 15
Unused (0)
2002H
bit 1
1 : Reset
00 : Normal operation / 01 : Over current / 02 : Over voltage
03 : Heatsink over temperature
04 : Over load / 07 : CPU fault (cF3) / 14 : Under voltage
15 : CPU fault (cF1) / 16 : CPU fault (cF2)
20 : Software protection /21 : Operation error
2100H(Fault Code) 22 : Hardware fault (Over temperature) cF3.1
23 : Hardware fault (Over voltage) cF3.2
24 : Hardware fault (Under voltage) cF3.3
26 : Hardware fault (Current detection) cF3.5
30 : Hardware fault hpf.2 / 31 : Hardware fault hpf.3
00 : STOP
01 : Decelerate stop
bit 0, 1
10 : Zero Speed
11 : RUN
bit 2, 5 to 9, 11 to 15 Unused (0)2101H
00 : Forward
01 : Reverse → Forward
bit 3, 4
10 : Forward → Reverse
11 : Reverse
bit 10
1 : Communication
2102H
Setting frequency F (###.##)
2103H
Output frequency H (###.##)
2104H
Output current A (#.##)
2105H
DC-link voltage V (###)
2106H
Output voltage V (###.#)- 19 -

6.5.4 Calculation for LRC (Longitudinal Redundancy Check)
STX
ADR1
ADR0
CMD1
CMD0
Starting data address

Number of read data
LRC CHK1
LRC CHK0
END1
END0

‘:’
‘0’
‘1’
‘0’
‘3’
‘2’
‘1’
‘0’
‘2’
‘0’
‘0’
‘0’
‘2’
‘D’
‘7’
CR
LF

01H
03H
21H
02H
00H
02H
01H + 03H + 21H + 02H + 00H + 01H = 29H
LRC = 29H Complement = FF – 29 + 1 = D7H-

6.5.5 Response in case of Fault
The inverter sends normal data when it receives a command message
from the master device.
However, if fault occurs during communication, normal data will not besent to the master device.
The cause of fault is classified as follows.
(1) Communication fault between the master device and the inverter	No transmission from the inverter → The master device outputs theresult of timeout.
Cause ① Communication line not connected, contact failure, disconnection.
		② Setting the unused address for the inverter(2) Fault code in the received message of the inverter
The inverter transmits fault code to the master device.
Confirm with fault code.

- 20 -

6.5.6 List of Fault Code
Fault
Code
01
02
03
04
09
20

Explanation
Illegal command code:
Command data other than those indicated by 03 and 06 is received.
Illegal address data:
Address data other than those indicated by 6.5.2 and 6.5.3 is received.
Illegal data:
Data other than those indicated by 6.5.2 and 6.5.3 is received.
Communication function fault:
The requested operation cannot be performed due to the communication function fault.
Checksum error:
Check if LRC checksum is accurate.
Watchdog timer:
After receiving the valid message for Modbus communication, the timer is reset to 0.

6.5.7 Reply Format for Fault Code
Example: Command Code 06H (In the case of fault code 02H is returned.)
STX
ADR1
ADR0
Function (CMD) 1
Function (CMD) 2
Exclusion code
LRC CHK1
LRC CHK0
END1
END0

‘:’
‘0’
‘1’
‘8’
‘6’
‘0’
‘2’
‘7’
‘7’
CR
LF

3AH
30H
31H
38H
36H
30H
32H
43H
46H
0DH
0AH

- 21 -

7. Alarm output
7.1 Protective function
When the following functions are activated, the inverter output is stopped.
Check the details of respective alarms, and take corrective measures. Be
sure to turn off the power before taking corrective measures.
ProtectivefunctionProtection ofsetting

Contents
The inverter is
stopped to prevent
setting change during
operation.

Stop due to hardware
Hardware failure failure

LED blinking pattern

ON
OFF

ON
OFF

The inverter is stopped
when overcurrent flows
Protection from due to overloading on
instantaneous the output side andovercurrent
when the output side
is short-circuited.
The inverter is stopped
Protection from when the overvoltage
overvoltage
in the DC intermediate
circuit is detected.

ON
OFF

ON
OFF

Correction
Check to see if the
dipswitch setting
is changed during
operation.
Turn off the power, andwait for one minute. If
the similar phenomenon
occurs when the poweris turned on again,
contact us and return
the product.
Check to see if the
motor lead wire is shortcircuited.

Check to see if the
primary voltage
is higher than thespecified value.

The inverter is stopped
Protection from when the undervoltage
undervoltage
in the DC intermediate ON
circuit is detected.
OFF

Check to see if the
primary voltage is lower
than the specified value.

Protection
from coolant
overheating

Check the mounting
condition and ambient
temperature.

The inverter is stopped
when overheating of
coolant is detected.

The inverter is stopped
Protection from when the current
overloaddue to overcurrent is
detected.
The inverter isElectronic
stopped due to motor
thermaloverloading.

ON
OFF

ON
OFF

Check to see if theequipment load isabnormal.

Note:	When the protective function is activated, the contact of the open collector
maintains conductivity until the protective function is cancelled. Check the
LED of the main unit to understand the details of alarm.

- 22 -

7.2 Reset methods when protective function is activatedReset the protective function by any one of the following methods.
(1) Turn off the input power.
(2) Set the operation stop switch on the front panel in the STOP position.
(3) Set the external control terminal “RUN” in the STOP (OFF) position.
(4) Transmit the Reset command when RS485 is used.

8. Maintenance and inspection
General-purpose inver ters are stationar y equipment in whichsemiconductor elements are used. Daily inspection is necessary to
prevent unexpected nonconformance due to the influence of operating
environment (temperature, humidity, dust, vibration, etc.), secular changeof parts, and service life.

8.1 Precautions as to maintenance and inspection

CAUTION(1) 	T he operator himself shall turn on or off the power to prevent
improper operation by any person not concerned.
(2) 	After the power is turned off, the internal circuit remains charged byhigh voltage. Turn off the power and wait for some time (more than
one minute) after the LED on the operation panel has gone out before
inspection.

8.2 Inspection items and period
Conduct daily inspection and periodical inspection as follows:
Classification

Daily
inspection

Periodical
inspection

Inspection
periodInspection item

Every day•	Check the ambient temperature, humidity, dust, foreign
substances, etc.
• Is there any abnormal vibration and sound?
• Is the main circuit voltage normal?
• Is there any foul smell?
• Cleaned state of the operation section.

One year•	Megohmmeter test (between main circuit terminal andgrounding terminal)• Is the tightened section loosened?
• Is there any trace of overheating?
•	Is the output voltage of each phase unbalanced because of
single inverter operation?
• Is the terminal block damaged?

Note:	The inspection period may change when the operating condition differs
during periodical inspection.

- 23 -

9. Precautions as to operation

CAUTION
9.1 Precautions as to use(1) 	A high-voltage circuit is provided on the printed circuit board. Never
touch it by hand.
(2) 	The internal circuit remains charged with high voltage for some timeafter the power is turned off. Wait for one minute after turning off thepower before inspection.
(3) 	Never touch the motor output terminal (UVW) even during free-runstop.
(4) 	The power is not turned off when operation is stopped by the stop
command. Exercise care to prevent an electric shock or unexpected
restart.
(5) 	Be sure to turn off the power when the inverter is not to be used for along time, otherwise improper operation may cause an electric shock.
(6) 	When operation at the output frequency exceeding 60 Hz is desired,the motor will rotate at a high speed, and the resultant unstable
motor rotation may cause breakdown. Check that the motor ismade especially for high-speed rotation and the safe operation canbe expected when the motor is mounted. It is recommended toperiodically check the equipment for safe operation.
(7) 	Operation may be unstable at a certain output frequency or under acertain load condition depending on the combination of the inverter
and motor. Sufficiently confirm stability by actual operation.
(8) 	Check that the input voltage is within the range of rating before
turning the power on. When a voltage exceeding the rated voltage
is applied, fire or smoke may be generated inside the inverter. In
addition, abnormal sound may be produced in some cases.
(9) 	The side of the inverter will become hot. Install the inverter on metalor other nonflammables.
(10)	Exercise special care so that dust or iron powder will not enter the
inverter.
(11)	T he electronic thermal is the fixed current (rated current of theinverter). Use a thermal relay except the Astero motor. The motor
may not be protected from overloading when start-stop operation isrepeated frequently; therefore, check the motor temperature rise.
(12)	The operator must check for the safety of the surrounding before
turning on or off the power. Prevent operation by any person who is
not concerned.
- 24 -

(13)	If the supply voltage drops when the power supply is interrupted
instantaneously, the inverter will detect the undervoltage and shut
off the output. When the supply voltage is restored, the inverter
automatically resumes operation. Check the system consistency.
(14)	The heat sink on the side of the inverter becomes hot. Never touch it
during operation or before a sufficient time passes after the inverter is
stopped.
(15)	Every possible effort has been made to ensure the quality of the
product. However, unexpected external noise and static electricity,
as well as incorrect terminal wiring, may cause operation beyond thesetting. Pay special attention to your machines and their safety.

CAUTION
9.2 Operational precautions(1) 	The voltage source capacity shall be within the range from 1.5 times
the inverter capacity to 500 kVA. When the voltage source capacity
exceeds 500 kVA or a phase advance capacitor is switched on the
power supply side, an excessive peak current may flow through thepower input circuit, braking the converter section. In that case, installa power factor improved AC reactor, which matches the inverter capacity, on the input side of each inverter.
(2) 	Wiring or operation sequence that permits application of input voltage to the output side of the inverter will cause inverter breakdown.
Avoid it.
(3) 	The life of inverter is greatly influenced by the ambient temperature.
Lower the ambient temperature as much as possible within the allowable range.
(4) 	Do not install an electromagnetic contactor between the inverter andmotor to run and stop the motor by the electromagnetic contactor.
Run and stop the motor by the operation switch on the front panel orby the external control terminal "RUN."(5) 	Do not connect a phase advance capacitor to the output side of theinverter, otherwise the phase advance capacitor may be broken.
(6) 	Do not conduct overload operation in excess of the inverter capacity (example: operation in excess of the rated current of the inverter),otherwise the inverter may be broken or the service life of the inverter
may be shortened.
(7) 	When operating a motor by the inverter, the leakage current may increase and the earth leakage breaker may malfunction. In that case, usean earth leakage breaker, which is made to prevent high harmonics
from reaching an inverter, in the system in question and other systems.
(8) 	This inverter is for 3-phase induction motors. Do not use the inverter
for single-phase motors.
- 25 -

(9) 	When using the inverter for parallel operation of more than one motor, select an appropriate inverter capacity so that the total rated
current will be lower than the rated current of the inverter. When the
total of motor output is used for selection, the rated current of theinverter may be exceeded depending on the type of motor. Exercise
care.
(10) The total length of the inverter and motor wire shall not exceed 50 m
(20 m in the case of shielded wire). Install a reactor, etc. between the
inverter and motor when the wiring is long.
(11)	Check that the wire on the terminal block is tightened correctly. If it isloose, overheating may result.
(12)	When the inverter is used to operate a motor, radio noise may begenerated in the inverter input/output wires and motor, adversely
affecting electronic equipment. In that case, install an inverter input/
output filter or put the wire in a conduit to control the noise to a certain extent.
(13)	Pay attention to the following when an inverter with a built-in electronic thermal is used:• The electronic thermal is the rated current for the inverter.
Check the rated current of the applicable motor.
• Adopt individual operation (one inverter for one motor).
(14)	Conduct a megohmmeter test of the inverter itself only for the main
circuit according the procedure shown below. When conducting amegohmmeter test for an external circuit, remove all terminals of themain circuit so that the test voltage will not be applied to the inverter.
Use a 500 DVC megohmmeter, and check that the reading exceeds 1
MΩ.
Do not connect.

Do not connect.
InverterPower
Megohmmeter

Groundingterminal- 26 -

Motor10. Safety Guideline- 27 -

- 28 -

- 29 -

- 30 -

- 31 -

- 32 -

Warranty
The scope of our warranty for our products is limited to the range of ourmanufacture.
Warranty (period and contents)
Warranty
PeriodThe warranty period for the new Products shall be 18 months after the shipmentof the Products from the seller's works or 12 months from the Products coming
into operation, whether comes first.

In the event that any problem or damage to the Product arises during the"Warranty Period" from defects in the Product whenever the Product is properly
installed and combined with the Buyer's equipment or machines, maintainedas specified in the maintenance manual, and properly operated under theconditions described in the catalog or as otherwise agree upon in writing
between the Seller and the Buyer or its customers; the Seller will provide, atWarranty its sole discretion, appropriate repair or replacement of the Product, without
Condition charge, at a designated facility, except as stipulated in the "Warranty Exclusions"described below.
However, if the Product is installed or integrated into the Buyer's equipment or
machines, the Seller shall not reimburse the cost of: removal or re-installation of
the Product or other incidental costs related thereto, any lost opportunity, any
profit loss or other incidental or consequential losses or damages incurred by the
Buyer or its customers.
Not withstanding the above warranty, the warranty as set forth herein shall not
apply to any problem or damage to the Product that is caused by :1. 	installation, connection, combination or integration of the Product in or to theother equipment or machine that is rendered by any person or entity otherthan the Seller ;2. 	insufficient maintenance or improper operation by the Buyer or its customers,such that the Product is not maintained in accordance with the maintenancemanual provided or designated by the Seller ;3. 	improper use or operation of the Product by the Buyer or its customers thatis not informed to the Seller, including, without limitation, the Buyer's or its
customers' operation of the Product not in conformity with the specifications,or use of lubricating oil in the Product that is not recommended by the Seller ;Warranty 4. 	any problem or damage to any equipment or machine to which the Productis installed, connected or combined, or on any specifications particular to the
Exclusions
Buyer or its customers ;5. 	any changes, modifications, improvements or alterations to the Product orthose functions that are rendered on the Product by any person or entity
other than the Seller ;6. 	any parts in the Product that are supplied or designated by the Buyer or its
customers ;7. 	earthquake, fire, flood, sea-breeze, gas, thunder, acts of God or any otherreasons beyond the control of the Seller ;8. 	normal wear and tear, or deterioration of the Product's parts, such as bearings,
oil-seals ;9. 	a ny other troubles, problems or damage to the Product that are not
attributable to the Seller.

Worldwide Locations
North America / South America
Sumitomo Machinery Corporation of America(SMA)
4200 Holland Blvd. Chesapeake, VA 23323, U.S.A.
TEL (1)757-485-3355 FAX (1)757-485-7490
SM Cyclo of Canada, Ltd. (SMC)
1453 Cornwall Road, Oakville, Canada ON L6J 7T5
TEL (1)905-469-1050 FAX (1)905-469-1055
EuropeSumitomo (SHI) Cyclo Drive Germany GmbH
(SCG)
Cyclostraße 92, 85229 Markt Indersdorf, Germany
TEL (49)8136-66-0 FAX (49)8136-5771
India
Sumi-Cyclo Drive India Private Limited (SDI)
Gat No. 186, Raisoni Industrial Park, Alandi Markal Road,
Fulgaon-Pune, Maharashtra, India
TEL (91)96-0774-5353
Southeast Asia / Oceania
Sumitomo (SHI) Cyclo Drive Asia Pacific Pte.
Ltd. (SCA)
15 Kwong Min Road, Singapore 628718
TEL (65)6591-7800 FAX (65)6863-4238

China
Sumitomo (SHI) Cyclo Drive Shanghai, Ltd. (SCS)
11F, SMEG Plaza, No. 1386 Hongqiao Road,
Changning District, Shanghai, China 200336
TEL (86)21-3462-7877 FAX (86)21-3462-7922
TaiwanTatung SM-Cyclo Co., Ltd. (TSC)
22 Chungshan N. Road 3rd., Sec. Taipei, Taiwan 104,
R.O.C.
TEL (886)2-2595-7275 FAX (886)2-2595-5594
Korea
Sumitomo (SHI) Cyclo Drive Korea, Ltd. (SCK)Royal Bldg Room #913, 19, Saemunan-ro 5-gil,
Jongno-gu, Seoul, 03173, Korea
TEL (82)2-730-0151 FAX (82)2-730-0156
Japan
Sumitomo Heavy Industries, Ltd. (SHI)
ThinkPark Tower, 1-1 Osaki 2-chome, Shinagawa-ku,
Tokyo 141-6025, JapanTEL (81)3-6737-2511 FAX (81)3-6866-5160

Specifications, dimensions, and other items are subject to change without prior notice.

Power Transmission & Controls Group
Headquarter ThinkPark Tower, 1-1 Osaki 2-chome, Shinagawa-ku, Tokyo 141-6025, Japan

No.EM0102E-4.4

EI14 Printed 2023.04