Troubleshooting - Mitsubishi Electric MELSERVO-J4 MR-J4 A Series Instruction Manual

8. TROUBLESHOOTING

8. TROUBLESHOOTING
When an error occurs during operation, the corresponding alarm or warning is displayed. When the alarm or
the warning occurs, refer to MELSERVO-J4 Servo Amplifier Instruction Manual (Troubleshooting) to remove
the failure. When an alarm occurs, ALM will turn off.
To output alarm codes, set [Pr. PD34] to "_ _ _ 1". Alarm codes are outputted by on/off of bit 0 to bit 2.
Warnings ([AL. 91] to [AL. F3]) do not have alarm codes. The alarm codes in the following table will be
outputted when they occur. The alarm codes will not be outputted in normal condition.
After its cause has been removed, the alarm can be deactivated in any of the methods marked
alarm deactivation column. Warnings are automatically canceled after the cause of occurrence is removed.
For the alarms and warnings written "SD" in the stop method column, the axis stops with the dynamic brake
after forced stop deceleration. For the alarms and warnings written "DB" in the stop method column, the axis
stops with the dynamic brake without forced stop deceleration.
Alarm code
CN1 CN1 CN1
No.
22 23 24
(Bit 2) (Bit 1) (Bit 0)
10 0 1 0
12 0 0 0
13 0 0 0
14 0 0 0
15 0 0 0
POINT
Refer to MELSERVO-J4 Servo Amplifier Instruction Manual (Troubleshooting)
for details of alarms and warnings.
As soon as an alarm occurs, turn SON (Servo-on) off and interrupt the power.
Table 8.1 Alarm list
Detail
Name
display
10.1
Undervoltage
10.2
12.1
12.2
Memory error 1 (RAM)
12.4
12.5
13.1
Clock error
13.2
14.1
14.2
14.3
14.4
14.5
Control process error
14.6
14.7
14.8
14.9
14.A
15.1
Memory error 2 (EEP-
ROM)
15.2
Detail name
Voltage drop in the control power
Voltage drop in the main circuit power
RAM error 1
RAM error 2
RAM error 4
RAM error 5
Clock error 1
Clock error 2
Control process error 1
Control process error 2
Control process error 3
Control process error 4
Control process error 5
Control process error 6
Control process error 7
Control process error 8
Control process error 9
Control process error 10
EEP-ROM error at power on
EEP-ROM error during operation
8 - 1
in the
Alarm deactivation
Press
the
Stop
"SET"
method
Alarm button Power
(Note 2,
reset on the off o
(RES) current n
3)
alarm
screen
.
DB
SD
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB