10
Display
CPF
EPR
-OV-
-LV-
OH
Display
OC-S
OC-D
OC-A
OC-C
OV-C
Err4
OVSP
Error Ca se Remendy
PROGRAM PROBLEM External noise interference
Connect a parallel RC burst
absorber across the magnetizing
coil of the magnetic contactor
that causes interference
Voltage too low
during stop
2. Restraining resistor or fuse
burnt out.
3. Detection circuit
1. Check if the power volta ge
was correct or not
2. Replace the restraining
resistor or the fuse
3. Send the inverter back for
The inverter is
overheated
during stop
1. Detection circuit
malfunctions
2. Ambient temperature too high
or bad ventilation
1. Send the inverter back for
repairing
2. Improve ventilation
conditions
EEPROM
problem Faulty EEPROM Replace EEPROM
Voltage too high
during stop Detection circuit malfunction Send the inverter back for
repairing
Over current at
start
1. the motor wind and
enclosure short circuit
2. the motor contacts and earth
short circuit
3. the IGBT module ruined
1.inspect the motor
2.inspect the wire
3.replace the transistor module
Over-current at
deceleration
The preset deceleration time is
too short. Set a longer deceleration time
Errors which can be recovered man ally and a tomatically
Error Ca se Remendy
Voltage too high
during operation/
deceleration
1. Deceleration time setting too
short or large load inertia
2. Power voltage varies widely
1. Set a longer deceleration time
2. Add a brake resistor or brake
module
3. Add a reactor at the power input
side
4. Increase inverter capacity
Illegal interrupt
of CPU Outside noise interference Send back to repair if it happens
many times
Over-current at
acceleration
1. Acceleration time too short
2. The capacity of the
motor higher than the
capacity of the inverter
3. Short circuit between
the motor coil and the
shell
4. Short circuit between
motor wiring and earth
5. IGBT module damaged
1. Set a longer acceleration time
2. Replace a inverter with the
same capacity as that of the
motor
3. Check the motor
4. Check the wiring
5. Replace the IGBT module
Over-current at
fixed speed
1. Transient load change
2. Transient power change
1.Increase the capacity of the
inverter
2.Rerun parameter auto tuning
(0-0 = 1)
3. Reduce stator resistance (14-0)
if the above remedies are
helpless
Over speed during
operating
1. Motor load too big or Inverter
capacity too small
2. Motor parameter error
(vector mode)
3. The gain is too big during
vector mode operating
4. The Current detect circuit
fault
1. Increase acceleration /
deceleration time (3-02/3-03)
2. Input correct motor
Parameter
3.Cha nge stator Resistance gain
and Rotator resistance gain
(14-0/14-1), suggest that
decrease 50~100, until 0
4. Send back to SMACH.
Errors which can not be recovered man ally
*Error display and remedy
*Error which cannot reco ered manually
