Mitsubishi Electric MELSERVO-JE MR-JE-100A, Instruction Manual

Page: 229 / 310

8. TROUBLESHOOTING
8 - 8
Alarm No.: 15 Name: Memory error 2 (EEP-ROM)
Alarm content A part (EEP-ROM) in the servo amplifier is failure.
Display Detail name Cause Check method Check result Action
15.1 EEP-ROM error
at power on
(1) It is repeatable. Replace the servo
amplifier. EEP-ROM is
malfunctioning at power
on. Disconnect the cables
except the power supply,
and then check the
repeatability.
It is not repeatable. Check (2).
(2) Something near the
device caused it.
It has a failure. Take countermeasures
against its cause. Check the power supply
for noise. Check if the
connector is shorted.
It has no failure. Check (3).
(3) The number of write
times exceeded 100,000.
Check if parameters has
been used very
frequently. It has a failure. Replace the servo
amplifier. Change the
process to use
parameters less
frequently after
replacement.
15.2 EEP-ROM error
during operation
(1) It occurs. Replace the servo
amplifier. EEP-ROM is
malfunctioning during
normal operation. Check if the error occurs
when you change
parameters during
normal operation.
It does not occur. Check (2).
(2) It takes an hour or more. Replace the servo
amplifier.
A write error occurred
while tuning results was
processed. Check if the alarm
occurs after an hour from
power on.
It takes less than an
hour. Check (3).
(3) Something near the
device caused it.
Check the power supply
for noise. Check if the
connector is shorted. It has a failure. Take countermeasures
against its cause.
Alarm No.: 16 Name: Encoder initial communication error 1
Alarm content An error occurred in the communication between an encoder and servo amplifier.
Display Detail name Cause Check method Check result Action
16.1 (1) An encoder cable is
malfunctioning.
It has a failure. Replace or repair the
cable. Check if the encoder
cable is disconnected or
shorted.
It has no failure. Check (2).
Encoder initial
communication
- Receive data
error 1
(2) The servo amplifier is
malfunctioning.
It is not repeatable. Replace the servo
amplifier. Replace the servo
amplifier, and then check
the repeatability.
It is repeatable. Check (3).
(3) It is not repeatable. Replace the servo motor. An encoder is
malfunctioning. Replace the servo motor,
and then check the
repeatability.
It is repeatable. Check (4).
(4) Something near the
device caused it.
Check the noise,
ambient temperature,
vibration, etc. It has a failure. Take countermeasures
against its cause.
16.2 Encoder initial
communication -
Receive data
error 2
Check it with the check method for [AL. 16.1].