Smach EFE 4000, Руководство по обслуживанию

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10
Display
CPF
EPR
-OV-
-LV-
OH
Display
OC-S
OC-D
OC-A
OC-C
OV-C
Err4
OVSP
Error Cause 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
1. Power voltage too low
2. Restraining resistor or fuse
burnt out.
3. Detection circuit
malfunctions
1. Check if the power voltage
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 manually and automatically
Error Cause 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
(0-06 = 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.Change 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 manually
*Error display and remedy
*Error which cannot recovered manually