Mitsubishi Electric MELSERVO-JE Instruction Manual page 21

1. SERVO AMPLIFIER TROUBLESHOOTING
Alarm No.: 16 Name: Encoder initial communication error 1
Alarm content
Detail
Detail name
No.
16.1 Encoder initial (1) An encoder cable is
communication
- Receive data
error 1
(2) The servo amplifier is
(3) An encoder is
(4) Something near the
16.2 Encoder initial Check it with the check method for [AL. 16.1].
communication -
Receive data
error 2
16.3 Encoder initial (1) An encoder cable is
communication -
Receive data
error 3
(2) The parameter setting of
(3) An encoder cable is
(4) The power supply
(5) The servo amplifier is
(6) An encoder is
(7) Something near the
16.5 Encoder initial Check it with the check method for [AL. 16.1].
communication -
Transmission
data error 1
16.6 Encoder initial
communication -
Transmission
data error 2
16.7 Encoder initial
communication -
Transmission
data error 3
An error occurred in the communication between an encoder and servo amplifier.
Cause
Check if the encoder
malfunctioning. cable is disconnected
or shorted.
Replace the servo
malfunctioning. amplifier, and then
check the
repeatability.
Replace the servo
malfunctioning. motor, and then check
the repeatability.
Check the noise,
device caused it. ambient temperature,
vibration, etc.
Check if the encoder
disconnected. cable is connected
correctly.
Check the parameter
two-wire type/four-wire setting.
type is incorrect.
[A], [C]: [Pr. PC22]
[B]: [Pr. PC04]
Check if the encoder
malfunctioning. cable is disconnected
or shorted.
Check the power
voltage has been supply voltage.
unstable.
Replace the servo
malfunctioning. amplifier, and then
check the
repeatability.
Replace the servo
malfunctioning. motor, and then check
the repeatability.
Check the noise,
device caused it. ambient temperature,
vibration, etc.
Check method Check result
It has a failure.
It has no failure.
It is not repeatable.
It is repeatable.
It is not repeatable.
It is repeatable.
It has a failure.
It is not connected.
It is connected.
The setting is
incorrect.
The setting is
correct.
It has a failure.
It has no failure.
An instantaneous
power failure has
occurred.
It has no failure.
It is not repeatable.
It is repeatable.
It is not repeatable.
It is repeatable.
It has a failure.
1 - 14
Action Target
Replace or repair the [A]
cable. [B]
[C]
Check (2).
Replace the servo
amplifier.
Check (3).
Replace the servo
motor.
Check (4).
Take
countermeasures
against its cause.
Connect it correctly. [A]
[B]
Check (2).
[C]
Set it correctly.
Check (3).
Replace or repair the
cable.
Check (4).
Review the power
and related parts.
Check (5).
Replace the servo
amplifier.
Check (6).
Replace the servo
motor.
Check (7).
Take
countermeasures
against its cause.