1756-IF16 analog input module

BENNY

Member
Join Date
Mar 2003
Posts
22
I have a 1756-IF16 module wired for single-ended inputs,that has 2 channels (6 & 14) which will go to zero randomly.I have swapped out the module and the problem still remains.I have removed the inputs and the 2 channels still go to zero randomly. Has anyone experienced this and were you able to fix it? Any help would be greatly appreciated,thank you in advance.
 
1st check I would do is ...

verify that all the devices are 2 wire loop powered devices. In addition, make sure that this is only one power supply in the loop.
 

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