YASKAWA Motoman UP6 - Page 519

AL-4302 (BRAKE CIRCUIT ERROR)
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K14
K15 K13
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An alarm
occurs.
Turn the control power supply OFF
and then ON.
Alarm?
Yes No
Replace the XTU01 circuit board.
Alarm?
Yes No
Replace the WRCA01 circuit board.
Alarm?
Yes No
Contact your Yaskawa
representative.
Confirm that relay K15 of the XTU01
circuit board is not stuck or
disconnected.
(See Fig. 23.)
Alarm?
Yes No
XIU01-
!!
XTU01
Fig. 23
Continue normal operation.
The defective WRCA01 circuit
board caused the alarm.
Continue normal operation.
The defective XTU01 circuit
board caused the alarm.
Continue normal operation.
The wrong operation of the WRCA
circuit board caused the alarm.
Continue normal operation.
The defective relay caused the alarm.
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