ABB AC450 Controller

M

Thread Starter

ma7asinooo

we have an ABB AC450 controller, with 2 redundant CI522A communication module and TC516 modem. During the last few months we found that the CI522A changeover from primary to redundant or vise-versa once every few months, with an error message on the system status list:

Bus error ERR=H 00000004

and we know that this error message is for "too high station address", and so it's not the reason of the change over. It came after the change over happened.

so please if any one know what the problem may be, please help.
 
Hi,

Can you provide more information about your system?

Is the AC450 using the CI522A modules and TC516 modem to communicate with the Advant Filed AF100 bus? Do you have an Operating Station where you can pull out the diagnostic of the buses? What's the status of the LEDs on the CI522A modules?

If you have an AF100 bus, one of the most common failures are the coax connections. Either a termination is missing, loose or broken. If you can provide additional information I may be able to help you more.

Please feel free to contact me directly [email protected]
 
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