8. TROUBLESHOOTING
8 - 7
Alarm No.12
Name: Memory error 1 (RAM)
Stop method: All axes stop
Alarm description
Interior part of the servo amplifier (CPU) is faulty.
Interior part of the servo amplifier (custom IC) is faulty.
Display Name
Cause
Checkpoint
Finding
Action
12.1
CPU built-in RAM
error
(1) Part in the servo amplifier
is faulty.
Reproduced.
Replace the servo
amplifier.
Unplug all cables except
the control circuit power
supply cable, and check
the reproducibility of the
error.
Not reproduced.
Check (2).
(2) Fault is generated from
the surrounding
environment.
Check the power supply
for noise.
Check that the connector
is not shorted.
Problem found.
Take countermeasure
according to the
cause.
12.2
CPU data RAM
error
(1) Part in the servo amplifier
is faulty.
Examine checkpoints described in the alarm display "12.1".
(2) Fault is generated from
the surrounding
environment.
12.3
Custom IC RAM
error
(1) Part in the servo amplifier
is faulty.
(2) Fault is generated from
the surrounding
environment.
Alarm No.13
Name: Clock error
Stop method: All axes stop
Alarm description
Fault is found in the printed board.
There is a clock error transmitted from the controller.
Display Name
Cause
Checkpoint
Finding
Action
13.1
Clock error
(1) Printed board is faulty.
Reproduced.
Replace the servo
amplifier.
(2) Parts are faulty.
Unplug all cables except
the power supply cable,
and check the
reproducibility of the error.
Not reproduced.
Check (3).
(3)
Error occurs.
Replace the controller.
Clock error transmitted
from the controller.
Error occurs when
connected with the
controller.
Error does not occur.
Check (4).
(4) Fault is generated from
the surrounding
environment.
Check the power supply
for noise.
Check that the connector
is not shorted.
Check for the fault of the
rear axis amplifier.
Problem found.
Take countermeasure
according to the
cause.
Summary of Contents for MELSERVO-J3W Series
Page 17: ...8 MEMO ...
Page 27: ...1 FUNCTIONS AND CONFIGURATION 1 10 MEMO ...
Page 87: ...4 STARTUP 4 14 MEMO ...
Page 117: ...5 PARAMETERS 5 30 MEMO ...
Page 129: ...6 GENERAL GAIN ADJUSTMENT 6 12 MEMO ...
Page 185: ...10 CHARACTERISTICS 10 8 MEMO ...
Page 241: ...11 OPTIONS AND AUXILIARY EQUIPMENT 11 56 MEMO ...
Page 274: ...13 USING A LINEAR SERVO MOTOR 13 25 1 2 3 4 ...