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5. TROUBLESHOOTING
5.4 Remedies for alarms
CAUTION
Refer to this section and "MELSERVO-J4 Servo Amplifier Instruction Manual (Troubleshooting)" to remove
the cause of the alarm. Use MR Configurator2 to refer to the cause of alarm occurrence.
Alarm No.: 3E
Name: Operation mode error
Alarm content
Detail
Detail name
No.
3E.1
Operation
(1) The MR-J4-_B_-LL
mode error
3E.4
Control
(1) The control mode of
command
inconsistency 1
3E.5
Control
(1) The control mode of
command
inconsistency 2
When an alarm occurs, eliminate its cause, ensure safety, and deactivate the
alarm to restart operation. Otherwise, it may cause injury.
If [AL. 25 Absolute position erased] occurs, always make home position setting
again. Otherwise, it may cause an unexpected operation.
As soon as an alarm occurs, make the Servo-off status and interrupt the main
circuit power.
POINT
This section explains the details of alarms exclusively for the MR-J4-(DU)_B_-
LL. Refer to "MELSERVO-J4 Servo Amplifier Instruction Manual
(Troubleshooting)" for other alarms.
When any of the following alarms occurs, do not deactivate the alarm repeatedly
to restart. Doing so will cause a malfunction of the servo amplifier and servo
motor. Remove its cause and allow 30 minutes or more for cooling, and then
resume the operation.
[AL. 30 Regenerative error]
[AL. 46 Servo motor overheat]
[AL. 51 Overload 2]
[AL. 37 Parameter error] is not recorded in the alarm history.
The operation mode setting was changed.
The control mode was mistakenly switched.
Cause
Check if the servo
servo amplifier was
amplifier was
connected to an
connected to an
SSCNET III controller.
SSCNET III
controller.
Check if the control
the MR-J4-_B_-LL
mode was switched to
servo amplifier was
the torque control
switched to the torque
mode.
control mode.
Check if the control
the MR-J4-_B_-LL
mode was switched to
servo amplifier was
the continuous
switched to the
operation to torque
continuous operation to
control mode.
torque control mode.
[AL. 45 Main circuit device overheat]
[AL. 50 Overload 1]
Check method
Check result
Connected.
Executed.
Executed.
5 - 6
Action
Target
Connect the servo
[B]
amplifier to an
SSCNET III/H
controller.
Review the
controller setting.
Review the
controller setting.
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