IAI America XSEL-KET - Manual (Page 431)

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INTELLI
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CTUAT
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412
Error No. Error name Cause Countermeasure
d18 Speed loop underrun error The driver CPU board was damaged due to
noise in the encoder cable. Replace the board and implement noise measures.
807 Shutdown relay ER status The transistor on the power-supply board
(to which the power cable is connected) is
damaged.
Replace the board.