Mitsubishi Electric MR-J3-B-RJ006, Instruction Manual

Page: 141 / 166

6 - 2
6. TROUBLESHOOTING
6.2 Remedies for alarms
CAUTION
When any alarm has occurred, eliminate its cause, ensure safety, then reset the
alarm, and restart operation. Otherwise, injury may occur.
As soon as an alarm occurs, mark Servo-off and power off the main circuit and
control circuit.
POINT
When any of the following alarms has occurred, do not deactivate the alarm
and resume operation repeatedly. To do so will cause the servo amplifier/servo
motor to fail. Remove the cause of occurrence, and leave a cooling time of
more than 30 minutes before resuming operation. To protect the main circuit
elements, any of these servo alarms cannot be deactivated from the servo
system controller until the specified time elapses after its occurrence. Judging
the load changing condition until the alarm occurs, the servo amplifier
calculates this specified time automatically.
Regenerative error (30)
Overload 1 (50)
Overload 2 (51)
The alarm can be deactivated by switching power off, then on or by the error
reset command CPU reset from the servo system controller. For details, refer
to section 8.1.
When an alarm occurs, the trouble (ALM) switches off and the dynamic brake is operated to stop the servo
motor. At this time, the display indicates the alarm No.
The servo motor comes to a stop. Remove the cause of the alarm in accordance with this section. MR
Configurator may be used to refer to the cause.
Display
Name
Definition Cause Action
10
Undervoltage
12
Memory error 1
(RAM)
13 Clock error
15 Memory error 2
(EEP-ROM)
16
Encoder error 1
(At power on)
17
Board error 2
19
Memory error 3
(Flash ROM)
1A
Motor
combination
error
20
Encoder error 2
24
Main circuit
error
Refer to chapter 8 of the MR-J3- B Servo Amplifier Instruction Manual.