8. TROUBLESHOOTING
8 - 8
Alarm No.15
Name: Memory error 2 (EEP-ROM) Stop
method: All axes stop
Alarm description
Interior part of the servo amplifier (EEP-ROM) is faulty.
Display Name
Cause
Checkpoint
Finding
Action
15.1 EEP-ROM
error
at power on
(1) EEP-ROM
operates
abnormally at power on
Reproduced.
Replace the servo
amplifier.
Unplug all cables except
the power supply cable,
and check the
reproducibility of the error.
Not reproduced.
Check (2).
(2)
Problem found.
Take countermeasure
according to the
cause.
Fault is generated from
the surrounding
environment.
Check that the power
supply does not have
noise.
Check that the connector
is not shorted.
No problem found.
Check (3).
(3) The number of parameter
write times is more than
100,000 times.
Check if parameter
settings are changed
frequently.
Changed. Change
parameters
less frequently.
15.2 EEP-ROM
error
during operation
(1) EEP-ROM
operates
abnormally during normal
operation.
Check if the error occurs
when parameter is
changed during normal
operation.
Error occurs.
Replace the servo
amplifier.
Alarm No.16
Name: Encoder initial communication error 1
Stop method: Corresponding axis stops
Alarm description
Error occurs in the communication between the encoder and the servo amplifier.
Display Name
Cause
Checkpoint
Finding
Action
16.1
(1) Encoder cable is faulty.
Check the shield.
Problem found.
Repair the cable.
Encoder receive
data error 1
No problem found.
Check (2).
(2) Fault is generated from
the surrounding
environment.
Problem found.
Take countermeasure
according to the
cause.
Check for noise,
surrounding air
temperature, and other
factors.
No problem found.
Check (3).
(3) Servo amplifier is faulty.
Check the reproducibility
of the error.
Reproduced.
Replace the servo
amplifier.
Not reproduced.
Examine checkpoints
described in the alarm
display "16.3".
16.2
(1) Encoder cable is faulty.
Examine checkpoints described in the alarm display "16.1".
Encoder receive
data error 2
(2) Fault is generated from
the surrounding
environment.
(3) Replace the servo
amplifier.
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 ...