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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 driver.
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
Driver 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 driver.
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) Power supply 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) Power supply detection
circuit fault
2) Fault in the surrounding
environment
17.4
Driver
identification
signal error
1) Driver 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 driver.