Al-4304 (Converter Input Power Error) - YASKAWA Motoman UP6 Instructions Manual

AL-4304 (CONVERTER INPUT POWER ERROR)

Converter SERVOPACK
CN30
CN1
CN7 Fig. 27
XIU01-!!
XTU01
K14
K15 K13
Fig. 28
Replace the converter.
Yes
Continue normal
operation.
Non-fuse breaker
R S T
r s t
Converter
L1 L2 L3 B1 B2
Fig. 29
Remove connector CN30 of the
WRCA circuit board and re-insert it.
(See Fig. 27.)
Yes
Check connector CN1 of the
converter. (See Fig. 27.)
Yes
Check connector CN7 of the
converter. (See Fig. 27.)
Yes
Is the contactor ON?
Alarm?
No
Tester
(Measure the
resistance.)
After turning OFF the non-fuse breaker, measure the
resistance between the non-fuse breaker's secondary
terminals and the converter's input power supply
terminals to confirm that all are open.
Measure the resistance between r and L1, s and L2,
and t and L3.
An alarm
occurs.
Alarm?
No
Alarm?
No
Alarm?
No
Yes No
Confirm that the contactor is not
stuck. (See Fig. 29.)
Alarm?
Yes
Confirm that relay K15 of the XTU01
circuit board is not stuck or disconnected.
(See Fig. 28.)
Alarm?
Yes
Replace the XTU01 circuit board.
Alarm?
Yes
Replace the WRCA01 circuit board.
Alarm?
Yes
Contact your Yaskawa
representative.
55
Continue normal operation.
The poor contact caused the alarm.
No
Continue normal operation.
The stuck contactor caused
the alarm.
No
Continue normal operation.
The defective relay caused
the alarm.
No
Continue normal operation.
The defective XTU01 circuit
board caused the alarm.
No
Continue normal operation.
The defective WRCA01 circuit
board caused the alarm.