Al-0021 (Communication Error (Servo)) - YASKAWA Motoman UP6 Instructions Manual

AL-0021 (COMMUNICATION ERROR (SERVO))

When the power is turned ON, an error is found in
communications with the SERVOPACK by self-diagonosis.
The SERVOPACK cannot be connected.
Power
SERVOPACK
supply unit
WRCA01
RCP01AAA
Is the LED on the
WRCA01 circuit board lit?
Remove connector CN50 on WRCA
circuit board and re-insert it.
Yes
Remove connector 2CN on the
RCP01AAA unit and re-insert it.
Yes
Is the LED on the
RCP01AAA unit lit?
No
Remove connector 1CN on the
RCP01AAA unit and re-insert it.
Yes
Check the fuse for the
RCP01AAA unit.
Normal
Contact your Yaskawa
representative.
Remove connector CN05 on the
XCP01 circuit board and re-insert it.
Yes
No Yes
Alarm?
No
Continue normal
Alarm?
No
Continue normal
Yes
Alarm?
No
Continue normal
operation.
Blown out
Remove the connector 1CN on the
RCP01AAA unit and re-insert it.
Yes
Check the connection of the
communications cable.
Remove the terminal connector of
CN10 on the WRCA01 circuit board
and re-insert it.
Alarm?
Yes
Alarm?
No
operation.
operation.
Replace the WRCA01 circuit board.
Contact your Yaskawa
representative.
Alarm?
23
An alarm
occurs.
Remove connector CN10 on the
WRCA01 circuit board and re-insert it.
Alarm?
Yes
No
Continue normal
operation.
Continue normal
operation.
Alarm?
Yes No
Continue normal operation.
The defective WRCA01 circuit
board caused the alarm.
No
Continue normal
operation.
No
Continue normal
operation.