Mitsubishi Electric MELSERVO-J3W Series, Instruction Manual

Page: 453 / 500

15. MR-J3W-0303BN6 SERVO AMPLIFIER
15 - 48
Alarm No.: 32 Name: Overcurrent Stop system: All axes
Alarm content A current higher than the permissible current was applied to the servo amplifier.
Display Detail name Cause Check method Check result Action
It occurs. Replace the servo
amplifier. 1) The servo amplifier is
malfunctioning.
The alarm occurs even
after removing power
cables (U/V/W).
It does not occur. Check 2).
It is shorted. Replace the power cable. 2) Ground fault or short of a
servo motor power.
Check if only the servo
motor power cable is
shorted.
It is not shorted. Check 3).
A ground fault
occurred at the
servo motor. Replace the servo motor. 3) The servo motor is
malfunctioning.
Remove power cables
of the servo motor side
and check insulation of
the motor (between U,
V, W, and
).
A ground fault did
not occur at the
servo motor. Check 4).
32.1 Overcurrent
detected at
hardware
detection circuit
(during driving)
4) Something near the device
caused it.
Check for noise, and
other factors. Problem found. Take countermeasures
against its cause.
It is occurring. Reduce the speed loop
gain.
Check the applied voltage
of the main circuit is
48VDC when 24VDC is set
for the main circuit power
supply. 1) The servo gain is high. Check if an oscillation is
occurring.
It did not occur. Check 2).
2) The servo amplifier is
malfunctioning.
3) Ground fault or short of a
servo motor power.
4) The servo motor is
malfunctioning.
32.2 Overcurrent
detected at
software
detection
function (during
driving)
5) Something near the device
caused it.
Check it with the check method for alarm display "32.1".