Mitsubishi Electric MELSERVO-J4 Instruction Manual Trouble Shooting page 23

1. TROUBLESHOOTING
Alarm No.: 1E Name: Encoder initial communication error 2
Alarm content
Detail
Detail name
No.
1E.1 Encoder (1) An encoder is
malfunction
(2) Something near the
1E.2 Load-side (1) A load-side encoder is
encoder
malfunction
(2) Something near the
Alarm No.: 1F Name: Encoder initial communication error 3
Alarm content
Detail
Detail name
No.
1F.1 Incompatible (1)
encoder
(2) The software version of
(3) An encoder is
1F.2 Incompatible (1) A load-side encoder,
load-side
encoder
(2) The software version of
(3) A load-side encoder is
An encoder is malfunctioning.
Cause
Replace the servo
malfunctioning. motor, and then check
the repeatability.
Check the noise,
device caused it. ambient temperature,
vibration, etc.
Replace the load-side
malfunctioning. encoder, and then
check the
repeatability.
Check the noise,
device caused it. ambient temperature,
vibration, etc.
The connected encoder is not compatible with the servo amplifier.
Cause
A servo motor or linear Check the model the
encoder, which is not servo motor/linear
compatible with the encoder.
servo amplifier, was
connected.
Check if the software
the servo amplifier does version supports the
not support the servo servo motor/linear
motor or linear encoder. encoder.
Replace the servo
malfunctioning. motor or linear
encoder, and then
check the
repeatability.
Check the model of
which is not compatible the load-side encoder.
with the servo amplifier,
was connected.
Check if the software
the servo amplifier does version of the servo
not support the load- amplifier supports the
side encoder. load-side encoder.
Replace the load-side
malfunctioning. encoder, and then
check the
repeatability.
Check method Check result
It is not repeatable.
It is repeatable.
It has a failure.
It is not repeatable.
It is repeatable.
It has a failure.
Check method Check result
It is not compatible
with the servo
amplifier.
It is compatible with
the servo amplifier.
It is not supported.
It is supported.
It is not repeatable.
It is repeatable.
It is not compatible
with the servo
amplifier.
It is compatible with
the servo amplifier.
It is not supported.
It is supported.
It is not repeatable.
It is repeatable.
1 - 16
Action Target
Replace the servo [A]
motor. [B]
[WB]
Check (2).
[RJ010]
Take
countermeasures
against its cause.
Replace the load-side [A]
encoder. [B]
[WB]
Check (2).
Take
countermeasures
against its cause.
Action Target
Replace it with a [A]
compatible one. [B]
[WB]
[RJ010]
Check (2).
Replace the servo
amplifier to one which
software version
supports the servo
motor/linear encoder.
Check (3).
Replace the servo
motor or linear
encoder.
Replace the servo
amplifier.
Use a load-side [A]
encoder which is [B]
compatible with the [WB]
servo amplifier.
Check (2).
Replace the servo
amplifier to one which
software version
supports the load-
side encoder.
Check (3).
Replace the load-side
encoder.
Replace the servo
amplifier.