Mitsubishi Electric Melservo-J3 Series MR-J3-B, Instruction Manual

Page: 367 / 802

11 - 10
11. TROUBLESHOOTING
Display Name Definition Cause Action
(Note 2)
Alarm
detailed
information
A32 Overcurrent Current that flew is
higher than the
permissible current
of the servo
amplifier.
1. A ground fault or short occurred with
the servo motor power cable.
(A ground fault or short due to the
deterioration of insulator.)
<Check method>
The alarm occurs even if the power is
switched on after disconnection of
servo motor power lines in servo
motor-side terminal.
Repair the cable.
2. External dynamic brake faulty.
<Check method>
The alarm does not occur when the
power is switched on after
disconnection of servo motor power
lines in external dynamic brake-side
terminal.
1. Check the parameter
and dynamic brake
sequence.
2. Change the external
dynamic brake.
3. Servo amplifier fault.
<Check method>
Alarm occurs even if the power is
switched on after disconnection of
servo motor power lines from the
servo motor power output (U, V, and
W).
Change the servo
amplifier.
4. Servo motor fault.
<Check method>
The alarm does not occur when the
power is switched on after
disconnection of servo motor power
lines in servo motor side terminal.
Change the servo motor.
5. External noise caused the
overcurrent detection circuit to
misoperate.
<Check method>
1. Check if the environment is
affected by the noise of
surrounding electromagnetic valve,
magnetic contactor, relay, etc.
2. Check the servo amplifier and
servo motor for grounding.
Take the grounding and
noise reduction techniques.
6. Encoder fault. Change the servo motor. 2