Mitsubishi Electric MELSERVO-JN Series, Инструкция по эксплуатации

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8. TROUBLESHOOTING
Alarm No.: A.16 Name: Encoder initial communication error 1
Description Communication error occurred between the encoder and the servo amplifier.
Detailed
display
Detailed
Name
Cause Checking method Result Action
16.5 Encoder
receive data
error 1
(Parity error) 1) Encoder cable faulty Check the shield
status. Error in the shield. Repair the cable.
No error in the
shield. Check 2).
2) Fault in the surrounding
environment
Check the noise, etc. An error is found. Take the appropriate
measures according to the
cause.
No error. Check 3).
3) Encoder fault Check if the alarm
occurs after replacing
the servo motor. Alarm does not
occur. Replace the servo motor.
16.6 Encoder
receive data
error 2
(Frame
error) 1) Encoder cable faulty Execute the checking methods mentioned in the alarm display "16.5".
2) Fault in the surrounding
environment
3) Encoder fault
16.7 Encoder
receive data
error 3
(Request
discrepancy) 1) Encoder cable faulty Execute the checking methods mentioned in the alarm display "16.5".
2) Fault in the surrounding
environment
3) Encoder fault
Alarm No.: A.17 Name: Board error
Description Servo amplifier internal part is faulty.
Detailed
display
Detailed
Name
Cause Checking method Result Action
17.1 AD converter
error 1) Current detection circuit
fault
Turn off the servo-on
(SON) and check if the
alarm occurs. Alarm occurs. Replace the servo
amplifier.
Alarm does not
occur. Check 2).
2) Fault in the surrounding
environment
Check the noise, the
ambient temperature,
etc. An error is found. Take the appropriate
measures according to the
cause.
17.2 Current
feedback
data error 1) Current detection circuit
fault
Execute the checking methods mentioned in the alarm display "17.1".
2) Fault in the surrounding
environment
17.3 Custom IC
error 1) Current detection circuit
fault
2) Fault in the surrounding
environment
17.4 Servo
amplifier
identification
signal error 1) Servo amplifier
identification signal could
not be read correctly.
Remove all cables
except for the control
circuit power supply
and check if the alarm
occurs. Alarm occurs. Replace the servo
amplifier.