DSAI 133N card went to fault state
We have AC415 ESD Controller with xA 4.1 frontend.
AI 133 Card of position 1 (Side A) went to fault mode.
After reset Card become healthy.
After few days AI 1 of side B went to fault state.
Again after reset card become healthy.
Problem reproduced in Side A and Side B randomly (Same AI 1 Card)
Replaced Side A,Side B AI Card, Connection unit, Checked input voltages of connection unit, found OK.still the problem persists
Few level signals of same card are out of range (higher End) and continuously generating alarms.
Signals are connected with field using KFD2 STC4 Ex1 Barrier.
what could be the reason of fault of AI Card ?
Thanks in advance..
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