Remedies For Alarms - Mitsubishi Electric MELSERVO-JE MR-JE-70A Instruction Manual

8. TROUBLESHOOTING

8.2 Remedies for alarms

CAUTION
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
Display Detail name
10.1 Voltage drop in (1)
the power
(2) Power supply voltage is
(3) An instantaneous power
10.2 Bus voltage (1)
drop
(2) Power supply voltage is
(3) The alarm has occurred
(4) The servo amplifier is
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. 46 Servo motor overheat]
[AL. 51 Overload 2]
The power supply voltage dropped.
The bus voltage dropped.
Cause
The connection of the
power connector has a
failure.
low.
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 _ _".
The connection of the
power connector has a
failure.
low.
during acceleration.
malfunctioning.
[AL. 45 Main circuit device overheat]
[AL. 50 Overload 1]
Check method
Check the power It has a failure.
connector.
It has no failure.
Check if the voltage of The voltage is lower than
the power supply is 160 160 V AC.
V AC or lower.
The voltage is higher
than 160 V AC.
Check if the power has a It has a problem.
problem.
Check the power It has a failure.
connector.
It has no failure.
Check if the voltage of The voltage is lower than
the power supply is 160 160 V AC.
V AC or lower.
The voltage is higher
than 160 V AC.
Check that the bus The voltage is less than
voltage during 200 V DC.
acceleration is 200 V DC
or more.
The voltage is 200 V DC
or more.
Check the bus voltage The voltage of the power
value. supply is 160 V AC or
more, and the bus
voltage is less than 200
V DC.
8 - 6
Check result
Connect it correctly.
Check (2).
Review the voltage of
the power supply.
Check (3).
Review the power.
Connect it correctly.
Check (2).
Increase the power
supply voltage.
Check (3).
Increase the acceleration
time constant. Or
increase the power
supply capacity.
Check (4).
Replace the servo
amplifier.
Action