Channel error on Analog Input Modules
Hello
We have a system with redundant PM865HI and Modulebus consisting of DI, DO & AI modules, all modules are 880 type.
The trouble is: all analog modules have channel error on all channels. First time not all channels had error, some of them had blinking error, some time later all channels are gone to channel error. Analog modules are redundant. After power off CPU, channel errors disappears and gradually appearing again. On the primary CPU there is a fault indicator and Tx indicator doesn't blinking on primary network.
Asked 6 years ago
Answers
0
It does not seems to be a known issue. Therefore, it's advised to contact nearest ABB along with hardware and software details for its investiation and resolution.
Answered 6 years ago
1
the trouble was found: low voltage on the AI modules. I've adjusted voltage on power unit and the errors disappeared. CPU error disappeared after power off/on procedure
Answered 6 years ago
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