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

Page: 230 / 310

8. TROUBLESHOOTING
8 - 9
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
16.3 (1) It is not connected. Connect it correctly. An encoder cable was
disconnected. Check if the encoder
cable is connected
correctly.
It is connected. Check (2).
Encoder initial
communication -
Receive data
error 3
(2) The setting is incorrect. Set it correctly. The parameter setting of
two-wire type/four-wire
type is incorrect. Check the [Pr. PC22]
setting.
The setting is correct. Check (3).
(3) 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 (4).
(4) The power voltage has
been unstable.
Check the power
voltage. It is an instantaneous
power failure. Review the power and
related parts.
It has no failure. Check (5).
(5) 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 (6).
(6) An encoder is
malfunctioning.
It is not repeatable. Replace the servo motor. Replace the servo motor,
and then check the
repeatability.
It is repeatable. Check (7).
(7) Something near the
device caused it.
Check the noise,
ambient temperature,
vibration, etc. It has a failure. Take countermeasures
against its cause.
16.5 Encoder initial
communication -
Transmission
data error 1
Check it with the check method for [AL. 16.1].
16.6 Encoder initial
communication -
Transmission
data error 2
16.7 Encoder initial
communication -
Transmission
data error 3
16.A (1) The servo amplifier is
malfunctioning.
It is not repeatable. Replace the servo
amplifier. Encoder initial
communication -
Process error 1 Replace the servo
amplifier, and then check
the repeatability.
It is repeatable. Check (2).
(2) 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 (3).
(3) Something near the
device caused it.
Check the noise,
ambient temperature,
vibration, etc. It has a failure. Take countermeasures
against its cause.
16.B Encoder initial
communication -
Process error 2
Check it with the check method for [AL. 16.A].
16.C Encoder initial
communication -
Process error 3
16.D Encoder initial
communication -
Process error 4
16.E Encoder initial
communication -
Process error 5
16.F Encoder initial
communication -
Process error 6