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Appendix 2 Alarm Code List
Alarm Code
Code
Screen Display
Cause
Troubleshooting
ERROR
1.
Under-voltage for power
supply
2.
The RES is
‘
on
’
3.
Bad connection between
the operation panel and
main machine
4.
Internal
circuit
malfunction
5.
Wrong operation of CPU
1.
Provide a normal power
supply
2.
Shut off RES
3.
Ensure
firm
connection
between the operation panel
and the main machine
4.
Replace the inverter
5.
Restart the inverter
OC0
Over-current
when stop
The inverter may be disturbed.
Please restart the inverter. If the
alarm repeated, please send the
inverter back to the factory.
OC1
Over-current
during
acceleration
OC2
Over-current at
constant speed
OC3
Over-current
during
deceleration
The output current is two
times larger than the rated
current of the inverter.
1.
In
case
the
time
for
acceleration or deceleration is
too short, please prolong it.
2.
Avoid abrupt increase of
load.
3.
Check Terminals U, V and W
for short circuit.
OV0
Over- voltage
when stop
Check whether the power supply
is normal or abnormal.
OV1
Over-voltage
during
acceleration
OV2
Over-voltage at
constant speed
Over-voltage
between
Terminal P and Terminal N
1.
In
case
the
time
for
acceleration or deceleration is
too short, please prolong it.
2.
Check the brake resistor
between terminal P and PR
for loose connection.
3.
Check whether the values of
P.30 and P.70 are right or
not.
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