Mitsubishi Electric MELSERVO-JE MR-JE-100A, Instruction Manual

Page: 227 / 310

8. TROUBLESHOOTING
8 - 6
8.2 Remedies for alarms
CAUTION
When any alarm has occurred, eliminate its cause, ensure safety, and deactivate
the alarm before restarting operation. Otherwise, it may cause injury.
As soon as an alarm occurs, make the Servo-off status and interrupt the power.
POINT
When any of the following alarms has occurred, do not cycle the power
repeatedly to restart. Doing so will cause a malfunction of the servo amplifier
and servo motor. Remove its cause and allow about 30 minutes for cooling
before resuming the operation.
[AL. 30 Regenerative error] [AL. 45 Main circuit device overheat]
[AL. 46 Servo motor overheat] [AL. 50 Overload 1]
[AL. 51 Overload 2]
Remove the cause of the alarm in accordance with this section. Use MR Configurator2 to refer to the cause
of alarm occurrence.
Alarm No.: 10 or less Name: Undervoltage
Alarm content
The power supply voltage dropped.
The bus voltage dropped.
Display Detail name Cause Check method Check result Action
10.1 Voltage drop in
the power
(1) Check the power
connector. It has a failure. Connect it correctly. The connection of the
power connector has a
failure.
It has no failure. Check (2).
(2) Power supply voltage is
low.
The voltage is lower than
160 V AC. Review the voltage of
the power supply. Check if the voltage of
the power supply is 160
V AC or lower.
The voltage is higher
than 160 V AC. Check (3).
(3) An instantaneous power
failure has occurred for
longer time than the
specified time. The time
will be 60 ms when [Pr.
PA20] is "_ 0 _ _". The
time will be the value set
in [Pr. PF25] when [Pr.
PA20] is "_ 1 _ _".
Check if the power has a
problem. It has a problem. Review the power.
10.2 (1) It has a failure. Connect it correctly. Bus voltage
drop The connection of the
power connector has a
failure. Check the power
connector.
It has no failure. Check (2).
(2) Power supply voltage is
low.
The voltage is lower than
160 V AC. Increase the power
supply voltage. Check if the voltage of
the power supply is 160
V AC or lower.
The voltage is higher
than 160 V AC. Check (3).
(3) The alarm has occurred
during acceleration.
Check that the bus
voltage during
acceleration is 200 V DC
or more. The voltage is less than
200 V DC. Increase the acceleration
time constant. Or
increase the power
supply capacity.
The voltage is 200 V DC
or more. Check (4).
(4) The servo amplifier is
malfunctioning.
Check the bus voltage
value. The voltage of the power
supply is 160 V AC or
more, and the bus
voltage is less than 200
V DC. Replace the servo
amplifier.