Hitachi SJ100 Series User manual

HITACHI INVERTER
SERVICE MANUAL
(ADJUSTMENT AND MAINTENANCE)
Model:
European Version
SJ100-002NFE to SJ100-022NFE
SJ100-004HFE to SJ100-075HFE
US Version
SJ100-002NFU to SJ100-022NFU
SJ100-004HFU to SJ100-075HFU
SJ100-037LFU
Japanese Version
SJ100-002LFR to SJ100-037LFR
SJ100-004HFR to SJ100-075HFR
After reading this manual, keep it at hand for future reference
NBS585XA
Hitachi, Ltd.
Tokyo Japan
SJ100 SERIES

INDEX
1. Pre-operation Check
1-1. Check inverter model and Manufacturing number
1-2. Check inverter parameter and motor specification
2. Measurement of The Internal Voltage Supply
3. Trouble Shoot
3-1. Error messages - Possible Cause and Remedy
3-2. Analysis of Various Operating Problems That Do Not Trigger an Trip Message
3-3. How to Initialize the Data (FACTORY SETTING)
3-4. Error Message Comparison
3-5. Other Displays
3-6. Auto tuning under high incoming voltage
4. Ambient Condition of the Frequency Inverter (Temperature, Altitude)
4-1. Required Derating in case of 50deg., 55 deg. of Ambient Temperature
4-2. Required derating toward altitude
5. Level of Each Detection
5-1. DC Bus Voltage Detection Characteristics
5.2. Output Current Detection Characteristics
5.3. Motor Temperature Detection (PTC)
5.4. Over Temperature Detection of the Frequency Inverter
6. Measurement & Replacement of Subassemblies
6-1. Insulation Measurement
6-2. Power Components Measurements
7. Maintenance and Inspection Procedure
7-1. Precautions
7-2. Measurement of Mains Voltage, Current and Power
7-3. Maintenance of Parts
7-4. If you install replacement INV at site
8. Daily Inspection and Periodical Inspection
9. Image block diagram
10. Spare parts list
10-1. parts list
10-2. I/O board compatibility
10-3. O, OI terminal adjustment procedure (C81, C82)
10-4. kW setup procedure
10-5. I/O board schematic (circuit diagram)
1-1
1-1
1-2
2-1
3-1
3-1
3-7
3-8
3-9
3-10
3-10
4-1
4-1
4-4
5-1
5-1
5-3
5-4
5-4
6-1
6-1
6-1
7-1
7-1
7-1
7-4
7-4
8-1
9-1
10-1
10-1
10-13
10-14
10-15
10-16
‑i‑

Revisions
Revisionhistorytable
No. Revision contents Date of issue Manual No.
-ⅰⅰ-

1. Pre-Operation Check
Before starting adjustment and maintenance, be sure to check the following specifications of the inverter
and the motor.
1.1 Check Inverter model and Manufacturing number (MFG No).
NE16452-6
MADE IN JAPAN
Hitachi, Ltd.
HITACHI
Model : SJ100-015NFE
HP/kW : 2 / 1.5
Input/Entree: 16.0 A 1Ph 200-240V 50,60Hz 9.3 A
3Ph 200-240V 50,60Hz
Output/Sortie: 1-360Hz 7.1 A 3Ph 200-240V
MFG No. 78H T1129670060 Date: 9708
You can find these information from the specification label which attached at the side cover of the unit.
(1) Description of the model name.
(2) Description of MFG No.
Inverter model
MFG No.
T112967 0060H87 Unique number
Production code
Revision of the inverter
Production Month
(1 - 9, 0:October, J:November, K:December)
Production year
(The unit digit of the year of grace. 7:1997, 8:1998, 9:1999, 0:2000)
1-1
EF015 HSJ100 Version number
E: European version
U: US version
R: Japanese versionSeries name Structure type
F: With operator
Input voltage class
005
004
: 7.5kW
: 5.5kW
: 4.0kW
: 3.7kW
: 3.0kW
: 2.2kW
: 1.5kW
: 1.1kW
: 0.75kW
: 0.55kW
: 0.4kW
: 0.2kW002
Applicable motor kW
L: 3 phase 200V class
N: Single/3 phase 200V class
H: 3 phase 400V class
075
055
040
037
030
022
015
011
007

1.2 Check Inverter parameter and motor specification.
[1] Inverter specifications.
(1) Inverter specifications (Monitor mode)
Display Function name Category Screen display Initial Remarks
order Code display EU US JPN
1 Output frequency monitor Monitor d01 - - -
2 Output current monitor Monitor d02 - - -
3 Running direction monitor Monitor d03 - - -
4 Feedback data of PID
control monitor Monitor d04 - - -
5 Intelligent input terminal
condition monitor Monitor d05 - - -
6 Intelligent output terminal
condition monitor Monitor d06 - - -
7 Output frequency
converted value monitor Monitor d07 - - -
8 Trip monitor Monitor d08 - - -
9 Trip history monitor Monitor d09 - - -
(2) Inverter specifications (Basic function mode)
Display Function name Category Screen display Initial Remarks
Order Code display EU US JPN
1 Output frequency setting Set F01 0.0 0.0 0.0
2 Acceleration time 1 Set F02 10 10 10
- Acceleration time 1
(2nd setting) Set F202 10 10 10
3 Deceleration time 1 Set F03 10 10 10
- Deceleration time 1
(2nd setting) Set F203 10 10 10
4 Running direction setting Set F04 00 00 00
5 Extended function
A group setting Set A--
6 Extended function
B group setting Set B--
7 Extended function
C group setting Set C--
8 Extended function
H group setting Set H--
Note; “-“ means hidden display ;depends on 2nd setting selection.
(3) Inverter specifications (Extended function mode : A group)
Displa
yFunction name Category Screen display Initial Remarks
Order Code display EU US JPN
1 Frequency destination Set A01 01 01 00
2 Running command
destination Set A02 01 01 02
3 Base frequency Set A03 50 60 60
- Base frequency(2nd setting) Set A203 50 60 60
4 Maximum frequency Set A04 50 60 60
- Maximum frequency(2nd
setting) Set A204 50 60 60
5 External freq. setting start Set A11 000
6 External freq. setting end Set A12 000
7 External freq. setting start
rate Set A13 000
8 External freq. setting end
rate Set A14 100 100 100
9 External freq. start pattern Set A15 01 01 01
10 Time constant of the filter
of analog input Set A16 888
1-2

(3) Inverter specifications (Extended function mode : A group)
Display Function name Category Screen display Initial Remarks
Order Code display EU US JPN
11 Multi-speed 1 to 16 Set A20 - A35 0 0 Note 1
12 Jogging frequency Set A38 1.0 1.0 1.0
13 Stop mode of jogging Set A39 00 00 00
14 Torque boost mode Set A41 00 00 00
- Torque boost mode(2nd
setting) A241 00 00 00
15 Level of manual torque
boost Set A42 11 11 11
- Level of manual torque
boost (2nd setting) A242 11 11 11
16 Manual torque boost
frequency Set A43 10.0 10.0 10.0
- Manual torque boost
frequency (2nd setting) A243 10.0 10.0 10.0
17 V/f characteristics Set A44 00 00 00
- V/f characteristics(2nd
setting) A244 00 00 00
18 V-gain Set A45 100 100 100
19 Selection of DC braking Set A51 00 00 00
20 DC braking frequency Set A52 0.5 0.5 0.5
21 DC braking waiting time Set A53 0.0 0.0 0.0
22 DC braking force Set A54 000
23 DC braking time Set A55 0.0 0.0 0.0
24 Frequency upper limiter Set A61 0.0 0.0 0.0
25 Frequency lower limiter Set A62 0.0 0.0 0.0
26 Jump frequency 1-3 Set A63, A65, A67 0.0 0.0 0.0
27 Jump frequency width 1-3 Set A64, A66, A68 0.5 0.5 0.5
28 Selection of PID control Set A71 00 00 00
29 P gain Set A72 1.0 1.0 1.0
30 I gain Set A73 1.0 1.0 1.0
31 D gain Set A74 0.0 0.0 0.0
32 Scale conversion of
PID control Set A75 1.0 1.0 1.0
33 Feedback destination Set A76 00 00 00
34 Selection of AVR function Set A81 02 02 02
35 AVR voltage Set A82 230/400 230/460 200/400
36 Second acceleration time Set A92 15.0 15.0 15.0
- Second acceleration
time(2nd setting) A292 15.0 15.0 15.0
37 Second deceleration time Set A93 15.0 15.0 15.0
- Second deceleration
time(2nd setting) A293 15.0 15.0 15.0
38 Method to use 2nd
acceleration / deceleration
(Acc2 / Dec2)
Set A94 00 00 00
- Method to use 2nd
acceleration / deceleration
(Acc2 / Dec2)(2nd setting)
A294 00 00 00
39 Acc1 to Acc2 changing
frequency Set A95 0.0 0.0 0.0
- Acc1 to Acc2 changing
frequency(2nd setting) A295 0.0 0.0 0.0
40 Dec1 to Dec2 changing
frequency Set A96 0.0 0.0 0.0
- Dec1 to Dec2 changing
frequency(2nd setting) A296 0.0 0.0 0.0
41 Acceleration characteristic Set A97 00 00 00
42 Deceleration characteristic Set A98 00 00 00
Note 1; A20;0, A21;5, A22;10, A23;15,A24;20, A25;30, A26;40, A27;50, A28; 60,A29--A35;0
1-3

(4) Inverter specifications (Extended function mode : B group)
Display Function name Category Screen display Initial Remarks
Order Code display EU US JPN
1 Selection of restart mode Set B01 00 00 00
2 Allowable UV time Set B02 1.0 1.0 1.0
3 Retry waiting time Set B03 1.0 1.0 1.0
4 Electronic thermal level Set B12 note note note Rated current of
each inverter
- Electronic thermal level
(2nd setting) Set B212 note note note Rated current of
each inverter
5 Electronic thermal
characteristics Set B13 01 01 00
- Electronic thermal
characteristics (2nd setting) Set B213 01 01 00
6 Overload restriction
operation mode Set B21 01 01 01
7 Overload restriction level Set B22 note note note Rated current
* 1.25 for each
inverter
8 Deceleration rate while
overload restriction Set B23 1.0 1.0 1.0
9 Selection of software lock Set B31 01 01 01
10 Analog meter adjustment Set B81 80 80 80
11 Start frequency adjustment Set B82 0.5 0.5 0.5
12 Carrier frequency Set B83 5 5 12
13 Data initialization or
Trip history clear Set B84 00 00 00
14 Initialization mode Set B85 01 02 00
15 Frequency converting
value Set B86 1.0 1.0 1.0
16 STOP key condition Set B87 00 00 00
17 Restart mode after FRS
invalid Set B88 00 00 00
18 Monitor contents
for OPE-J Set B89 01 01 01
19 Dynamic braking usage
ratio Set B90 00 00 00
20 Stopping mode selection Set B91 00 00 00
21 Cooling fan control
selection Set B92 00 00 00
1-4

(5) Inverter specifications (Extended function mode : C group)
Display Function name Category Screen display Initial Remarks
Order Code display EU US JPN
1 Input terminal 1 assign Set C01 00 00 00
2 Input terminal 2 assign Set C02 01 01 01
3 Input terminal 3 assign Set C03 02 16 02
4 Input terminal 4 assign Set C04 03 13 03
5 Input terminal 5 assign Set C05 18 09 09
6 Input terminal 6 assign Set C06 09 18 18
7 Input terminal 1 condition Set C11 00 00 00
8 Input terminal 2 condition Set C12 00 00 00
9 Input terminal 3 condition Set C13 00 00 00
10 Input terminal 4 condition Set C14 00 01 00 Note 1
11 Input terminal 5 condition Set C15 00 00 00
12 Input terminal 6 condition Set C16 00 00 00
13 Output terminal 11 assign Set C21 01 01 01
14 Output terminal 12 assign Set C22 00 00 00
15 FM terminal condition set C23 00 00 00
16 Function of AL terminal
setting Set C24 05 05 05
17 Output terminal 11
condition Set C31 00 00 00
18 Output terminal 12
condition Set C32 00 00 00
19 AL output terminal
condition Set C33 01 01 01
20 Level of overload signal Set C41 note note note Rated current of
each inverter
21 Arrival frequency
while acceleration Set C42 0.0 0.0 0.0
22 Arrival frequency
while deceleration Set C43 0.0 0.0 0.0
23 Level of deviation signal
under PID control Set C44 3.0 3.0 3.0
24 Analog input O adjustment Set C81 -- -- --
25 Analog input OI adjustment Set C82 -- -- --
26 Debug mode selection Set C91 00 00 00
27 Core monitor address Set C92 0000 0000 0000
28 Core monitor data Set C93 -- -- --
29 Core set address Set C94 D0001 D000 D000
30 Core set data Set C95 -- -- --
Note 1
USP function (NC) is allocated on US version and even another function such as CF1 is set, NO/NC
parameter is still the same. Therefore, please make sure the NO/NC parameter to suit the application.
1-5

(6) Inverter specifications (Extended function mode : H group)
Display Function name Catego
ry Screen display Initial Remarks
Order Code display EU US JPN
1 Auto tuning setting Set H01 00 00 00
2 Motor data selection Set H02 00 00 00
- Motor data selection(2nd
setting) Set H202 00 00 00
3 Motor capacity setting Set H03 *3 *3 *3
- Motor capacity setting(2nd
setting) Set H203 *3 *3 *3
Motor poles setting H04 4 4 4
Motor poles setting(2nd setting) H204 4 4 4
4 Speed response setting Set H05 20 20 20
- Speed response setting(2nd
setting) Set H205 20 20 20
5 Motor stabilization constant
setting Set H06 100 100 100
- Motor stabilization constant
setting(2nd setting) Set H206 100 100 100
6 Motor constant R1 setting Set H20 *2 *2 *2
- Motor constant R1 setting(2nd
setting) set H220 *2 *2 *2
7 Motor constant R2 setting Set H21 *2 *2 *2
- Motor constant R2 setting(2nd
setting) Set H221 *2 *2 *2
8 Motor constant L setting Set H22 *2 *2 *2
- Motor constant L setting(2nd
setting) H220 *2 *2 *2
11 Motor constant Io setting H23 *2 *2 *2
- Motor constant Io setting(2nd
setting) H223 *2 *2 *2
12 Motor constant J setting H24 *2 *2 *2
- Motor constant J setting(2nd
setting) Set H224 *2 *2 *2
13 Motor constant R1(auto tuning
data) *1 H30 *2 *2 *2
- Motor constant R1(auto tuning
data,2nd setting *1 H230 *2 *2 *2
14 Motor constant R2(auto tuning
data) *1 H31 *2 *2 *2
- Motor constant R2(auto tuning
data,2nd setting *1 H231 *2 *2 *2
15 Motor constant L(auto tuning
data) *1 H32 *2 *2 *2
- Motor constant L(auto tuning
data,2nd setting *1 H232 *2 *2 *2
16 Motor constant Io(auto tuning
data) *1 H33 *2 *2 *2
- Motor constant Io(auto tuning
data,2nd setting *1 H233 *2 *2 *2
17 Motor constant J(auto tuning
data) *1 H34 *2 *2 *2
- Motor constant J(auto tuning
data,2nd setting *1 H234 *2 *2 *2
*1; don’t change the data
*2 ; factory set
*3 ; specified by the capacity of each inverter
1-6

[2] Motor specifications.
[3] Load conditions
Output voltage
Output
frequency
V
0Hz Hz
Motor MFG number
kWMotor output
pMotor poles
rpmMotor rated rpm
AmpsRated current
VRated voltage
HzRated frequency
AmpsStarting current
Equipment name
Torque characteristics
NmRequired torque
kgm2
Load inertia (J)
secAcceleration time
secDeceleration time
Hz to
Variable speed range
Hz
1-7/E

2. Measurement of the Internal Voltage Supply
There are PV5L, PV24L and NV12L internal DC voltage supplies. These supplies are isolated from the
main high voltage portion. And it is not possible to measure DC voltages at the non isolated portion.
Please make measurements for above mentioned voltages for the isolated portion.
PV5L supply voltage
Supplies 5V for I/O board.
Nominal voltage : min. 4.90Vdc to max. 5.20Vdc
Check PV5(address 1C) <- L
PV24L supply voltage
Supplies 24V to interface voltage supply, which is supplied to input terminals.
Nominal voltage : min. 21.60Vdc to max. 26.40Vdc
Check PV24(address 1A) <- L
NV12L supply voltage
Supplies -12Vdc to remote operator (DOP/DRW’s yellow back light ).
Nominal voltage : max. -10.80Vdc to min. -17.5Vdc
Check NV12(address 3A) <- L
“H” terminal voltage
Suppiles 10V to “H” terminal
Nominal voltage : min 9.5Vdc to max 11.5Vdc
Check “H”
<-> “L” with VR (1kohm)
“Potentiometer function on the front case
Set “A01” :”00”
Monitor “F01” display 0 <-> 50(60) with clockwise and anti clockwise.
Cooling FAN voltage (PV24N)
Supplies 24V to cooling FAN .
Nominal voltage min 19.9Vdc to max 27.2Vdc.
Check Red wire <- Black wire with the FAN.
Check the FAN working, direction(from down to up).
Check pad of NV12 Check pad of PV24
Check pad of PV5
1 pin of TM2 is “L”common
2-1/E

3. Trouble Shoot
3-1. Error Messages - Possible Cause and Remedy:
(1) Over current 1 (E 01, E 02, E 03, E 04)
Phenomena: Over current (CT or Rsh;gate driver IC) for each condition.
E 01 : Over current during constant speed operation.
E 02 : Over current during deceleration.
E 03 : Over current during acceleration.
E 04 : Over current at other condition than above mentioned.
(such as injection brake)
Cause: Load changed rapidly.
Remedy: Eliminate rapid changed in load.
Cause: Sort circuit or earth contact (ground fault) in the motor or the motor cable.
Remedy: Check with Megger. If the motor cable is disconnected from the inverter, the over
current should not be detected anymore.
Cause: A single-phase power failure (fuse, wire, ...) can cause a shutdown in certain
under load situations..
Remedy: Check all these mains phases and the mains fuses, preferably by comparison of
the three (two in case of single phase inverter) mains currents in a steady
operating state.
Cause: The motor is switched with a motor contactor during frequency inverter operation.
Remedy: Switching over the motor is inhibited.
Cause: Defect in the power component.
Remedy: Check the IGBT portion of ISPM.
Cause: Rapid acceleration or deceleration.
Remedy: Set suitable acceleration or deceleration time.
Cause: Starting frequency is too high.
Remedy: Set starting frequency as low as possible.
Way to Reset: A
SJ100 has two kinds of detection; CT and Rsh. To resolve the detection at site, check the following
procedure.
1. Connect DOP/DRW.
2. Set F38 INIT DEBG ON. (to access debug mode)
3. Set F22 IPS POWR ALM mode, don’t set retry mode.
4. Test run and wait Over Current trip.
5. Set Core address “FBE4” if it’s 4kW or less.
5. Set Core address “FBE2” if it’s 5.5kW or above.
3-1

Specimen ;
“CO FBE4 01 0000” ; under normal; 0Hz
“CO FBE4 15 0203” ; under over.C trip
“CO FBE4 15 C203” ; under OC.Drive trip.
“CO FBE4 15 4103” ; under OC.Accel trip
“FBE4” or “FBE2” is 1 byte data, the data is hex data. Example “4103”; “03” has no meaning.
Resolve “41”h bit by bit,
“41”h -> “0100 0001”b
if you found “xxxx xxx1” ; this means Over current detection from CT (CTU or CTW)
if you found “xxxx xx1x” ; this means Over current detection from Rsh
Standard operator is not available on this trouble shooting.
(2) Overload (E 05)
Phenomena: Overload (detected by CT) of the inverter.
This error can be reset 10 seconds after the E05 came out.
Cause: Motor load is heavy.
Remedy: Reduce the load and/or increase thermal level and/or use bigger capacity of
frequency inverter.
Cause: V-Boost value is high.
Remedy: Reduce V-Boost value or increase thermal level and/or use bigger capacity of
frequency inverter.
Cause: Set wrong value for electronic thermal level [b12] and/or electronic thermal
characteristic [b13].
Remedy: Set suitable value.
Cause: Set wrong value for the reactive current of the motor.
Remedy: Set suitable value. Reactive current value which should be input by function mode
is a value measured at 50Hz (60Hz) without load.
Way to Reset: A
(3) Braking Resistor Overload (over voltage) (E 06)
Phenomena: Over Voltage detection after BRD%ED was run out.
Cause: BRD selection is not suitable.
Remedy: Check BRD %ED, BRD resistor ohm, BRD resistor Wattage, BRD resistor wire,
machine inertial, operation cycle.
Way to Reset: A
3-2

(4) Over voltage (E 07)
Phenomena: Over voltage at DC bus line of the frequency inverter.
Cause: Mains voltage too high, mains voltage fluctuation or rapid mains voltage return
(choke energy leads to voltage increase).
Remedy: Make sure that mains voltage is within tolerance limits.
Cause: In case SJ100 is used in combination with a regenerative braking unit(ISPM)/
resistor but the regenerative braking unit(ISPM)/resistor does not function.
Remedy: Replace regenerative braking unit(ISPM)/resistor.
Cause: In case SJU100 is used in combination with a raking resistor but the braking
resistor cannot absorb the regenerative energy.
Remedy: Re-calculate and use suitable braking resistor.
Cause: Deceleration time is too short.
Remedy: Make deceleration time longer, use braking unit (resistor), use bigger capacity of
frequency inverter.
Way to Reset: A
(5) Under voltage (E 09)
Phenomena: Under voltage at DC bus line of the frequency inverter.
Cause: The mains voltage is not available or not within the tolerance limits.
Remedy: Check all 3 (or 2) mains power supply voltage that it is within its specification.
Cause: Thyristor for smooth charging is defect and DC bus voltage drops while operation
due to current flows through smooth charging resistor.
Remedy: Change ISPM.
Cause: Period of instantaneous power failure is longer than the set value [b02], or DC bus
voltage go down to its detecting level while instantaneous power failure.
Remedy: Get rid of the instantaneous power failure, evaluate the power supply system, set
bigger value for [b02].
Cause: One of the AC voltage is missing (applied only for 3 phase INV)
Remedy: Check AC line voltage , check the fuses.
Way to Reset: A
(6) EEPROM error (E 08)
Phenomena: Abnormal situation occurs at the memory portion of the frequency inverter due to
incoming noise etc..
Cause: Influenced by Electrical Magnetic Interference.
Remedy: Keep such noise source away from the frequency inverter.
Cause: Ambient temperature is too high.
Remedy: Take countermeasure against high ambient temperature.
3-3

Cause: Re-power up the frequency inverter short time after power off. It is necessary to
keep several seconds after power off to memorize the current data at EEPROM. If
this time is too short, this storage performance cannot be done and leads to
EEPROM error.
Remedy: Keep certain time between power off and re-power up.
Cause: You didn’t wait 6 seconds or more at FACTORY SETTING.
Remedy: Please try FACTORY SETTING again.
Cause: RS terminal was keeping “ON” at power off. (If RS is on, INV can not write the
correct data to EPROM at power off, next power on E08 will come out.)
Remedy: Please don’t use “RS” terminal “ON” at power off.
Cause: EEPROM is defect.
Remedy: Change unit.
After you reset the INV, please make sure the parameters especially maximum freq. / Acc /Dec
time / Low limit freq. to prevent any damage.
Way to Reset: A or Power off
(7) CT error (E 10)
Phenomena: When abnormality noise is near the INV or an abnormality (offset level is out of
spec.) occurs on built in CT.
Cause: Influenced by Electrical Magnetic Interference. (such as near contactor on/off)
Remedy: To Resolve if it’s influence, use another power line and don’t connect motor wires,
control wires. If no error comes out, resolve noise causes.
Cause: CT offset level failure
Remedy: To Resolve if it’s failure, use another power line and power on and check if E10
comes out at power on. If E10 came out , use (replace) another INV(ISPM).
Way to Reset: A or Power off
(8) CPU error (E 11, E 22)
Phenomena: Abnormal situation or malfunction of micro processor inside frequency inverter.
E 11 : CPU error from MCU inside core.
E 22 : CPU error from MCU on I/O board.
E22 is produced by MCU on I/O board and the causes is communication error between ISPM & MCU
on I/O board.
Cause: Cable (between ISPM and I/O board)was cut. (E22)
Remedy: Replace the cable.
Cause: Dusts on the pins of CN2 on I/O board. (E22)
Remedy: Remove the dusts.
Cause: Influenced by Electrical Magnetic Interference.
Remedy: Keep such noise source away from the frequency inverter.
Cause: Ambient temperature is too high.
Remedy: Take countermeasure against high ambient temperature.
3-4

Cause: Component itself is defect.
Remedy: Replace ISPM (in case of E 11) or I/O board board (in case of E 12).
(9) External Trip (E 12)
Phenomena: Trip due to have inputted an external signal to “EXT” input terminal of the
frequency inverter.
Cause: Faulty external device or equipment gives frequency inverter a trip requirement
when external trip function (EXT) is selected.
Remedy: Evaluate external device or equipment which is connected to frequency inverter.
Way to Reset: A
(10) USP error (E 13)
Phenomena: Unexpected Start Protection. This error can occur when “USP” function is
selected.
Cause: Frequency inverter trips when it is powered up with RUN command is given.
Remedy: Disable RUN command when power up the frequency inverter. Or disable USP
function if possible to the system.
Way to Reset: A or set RUN command off (stop)
(11) Ground fault error (E 14)
Phenomena: Earth contact in the motor or the motor cable or in the IGBT. Frequency inverter
detects this earth contact only at power up.
To resolve the causes , please power off and disconnect the motor wire at INV (UVW)terminal.
Cause: Earth contact in the motor or the motor cable.
Remedy: Check the impedance between output portion(wire and motor) and earth.
Cause: Detection circuit/IGBT of the inverter is defect. If the motor and the motor cable is
disconnected from the frequency inverter, the ground fault should not be detected
anymore.
Remedy: Please disconnect the motor and the motor cable.
If E14 comes out at power on, please replace the unit.
Way to Reset: Don’t reset.
(12) Over voltage at source (E 15)
Phenomena: High voltage at power source line. Frequency inverter cannot protect source over
voltage. If it is too high, frequency inverter will be damaged.
Cause: Source voltage is too high.
Remedy: Check the source voltage continously.
Insert AC reactor at source lines.
Way to Reset: A 3-5

(13) Over temperature (E 21)
Phenomena: Temperature sensor which located close to IGBT inside ISPM shows a too high
temperature.
Cause: Ventilator blocked. (for models which has ventilator.)
Remedy: Check ventilator
Cause: The frequency inverter does not get enough cooling air.
Remedy: Check cabinet ventilation, air filters, and ventilation openings in the cabinet.
Way to Reset: A
(14) PTC error (E 35)
Phenomena: Resistance of motor thermistor is high. This error can occur when you select
“PTC” function.
Cause: Too much load of the motor.
Remedy: Reduce the load, use bigger motor.
Cause: Motor thermistor is not connected while PTC function is selected.
Remedy: Disable PTC function when it is not used.
Cause: Characteristics of the motor thermistor is not suitable. Frequency inverter gives
PTC error when the resistance value becomes more than 3k ohm +-10%.
Remedy: Use motor which has suitable thermistor for the inverter.
Or change thermistor characteristics of the thermistor by debug mode.
Way to Reset: A
Explanation of the way to reset.
A : Make close the terminals between RS and P24 (CM1 only for Japanese version) on the I/O board, or
press “STOP/RESET” key of the operator.
3-6

3-2. Analysis of Various Operating Problems That Do Not Trigger an Trip
message.
Problem Possible cause Remedy
The motor does not start Mode of frequency command [A01]
and/or Run command [A02] is not
proper
Check each mode again
Incorrect power supply condition Check that the power supply is
within its specification
Inverter is in trip mode Get rid of the trip cause
0 Hz of Multi-stage speed is given
FRS and/or RS is remaining Make FRS and RS invalid
0 Hz command is given
Each phase to phase voltage does
not balance. (out of +-3%) Replace the unit
Load is too heavy Decrease the load or use bigger
capacity of inverter and motor
If you use DOP or DRW, DIP
switch selection of the operator is
incorrect.
Set as follows
Same as J300, J100,L100
Inverter Failure Replace the unit
Rotation direction is
opposite Wiring of the motor cable is incorrect (U, V, W) Check the wiring of the motor cable
Setting of [F04] is incorrect Check the setting
Motor does not increase
speed Motor load is too heavy (Overload limitation) Remove or decrease the motor load
External frequency set (VR) is out
of order replace VR
Frequency limiter [A61] is set Eliminate frequency limiter
Acceleration time is too short Set longer acceleration time
The inverter cannot be
programmed Software lock is selected [b31] Make software lock invalid
While INV running Stop the INV
RS or FRS command is given Make them invalid
Multi stage speed command is
given Make inverter in stop mode
Loose connection of DOP/DRW Connect DOP/DRW properly
Inverter is in trip mode Reset the inverter
Unstable rotation of the
motor Motor load is changing heavily Reduce the motor load changing or use bigger capacity of inverter
and motor
Source voltage is changing Reduce the changing
Mechanical resonance Change output frequency
Data is not changed Forgot to press [STR] key Press [STR] key after changing
data
Turn main power off within 6
seconds after pressing [STR] key Make sure to wait at least 6 seconds after [STR] key is pressed
Cannot change data by
Copy Unit Turn power off within 6 seconds after started copying Make sure to wait at least 6 seconds
OFF
ON
4
3
2
1
3-7

3-3. How to Initialize the Data (FACTORY SETTING)
1. Select the mode of initialization data to which you want to initialize by [b85].
Japanese version data -----> Set “00” and store
EU version data -----> Set “01” and store
US version data -----> Set “02” and store
2. Set [b84] to “01” to initialize and store.
3. Keep pressing keys at the same time.
(If front case is not closed by the screw, difficult to press 3keys.)
4. Additionally press key and release key approximately after one second.
5. Keep pressing keys until “d 00” will blink. (Approximately 2 seconds.)
6. Release all the keys after starts blinking.
[c95] ; INV kW code
01;0.2kW , 02;0.4kW , 03;0.75kW (0.5 kW) , 04;1.5kW , 05;2.2kW ,
06;3.7kW(4.0kW) , 07;5.5kW, 08;7.5kW
Initialization end
Release after “d 00”
started blinking
FUNC. 12
FUNC. 12
STOP
RESET STOP RESET
FUNC.
1
2
ON (press)
ON
ON
ON
1s or more
STOP
RESET
3-8

3-4. Error Message comparison
Digital Panel DOP / DRW Contents
OC. Drive Over current while constant speed
driving (CT or gate driver IC)
OC. Decel Over current while deceleration (CT or
gate driver IC)
OC. Accel Over current while acceleration (CT or
gate driver IC)
Over. C Over current at other condition than
above(such as 0Hz,injection brake)
(CT or gate driver IC)
Over. L Over load
(Possible to reset after 10 seconds
has passed, detected by CT)
OL. BRD Over voltage after the BRD%ED
was run out. (DC bus)
Over. V Over voltage (DC bus)
EEPROM EEPROM error
(Check the parameters again if this
error occurred)
Under. V Under voltage (DC bus)
CT CT offset error such as external noise
or CT itself
CPU 1 CPU error
CPU 2
External External error
USP USP error
GND Flt Ground fault at power-on detected by
CT
OV. SRC Over voltage at source (DC bus)
(continuously 100sec while stop)
OH FIN Over temperature (in the ISPM)
PTC PTC error (only terminal 5 )
3-9