Damage of miniconverter IC690ACC901

[milovanmaric]

Hello to group, I am new here, forum is very good thanks to you people, and my first post is that I need some help. I am interested for schematic diagram of mini-converter from GE FANUC 90-30 communication cable IC690ACC901, it is RS232 to RS485 converter. I was already search on Google and in Ge Fanuc page, but except final product I did not found any diagram or schematic, or some web page. Is any of you guys maybe work with GE Fanuc 90-30 PLC, I need to repair for me this converter, I had damage this mini converter by mechanical shock ( ) , so question is any on web schematic of this? Thanks. Edited December 25, 2010 by milovanmaric

[Steve Bailey]

There isn't much to repair.The active components are op-amps to turn the single-ended RS232 signals into differential RS485 signals. You could check for broken connections and possibly replace the op-amps. The unit isn't particularly expensive, so if you place any value on your time it will probably be less expensive to replace the device rather than spend the time trying to repair it. Appendix E of GFK-0356 shows a little detail about a different device but should give you an idea of what the miniconverter does. Here's a link to a diagram for a cable that may work without the need for the miniconverter. http://gefanuc.bnsi.net/eforum/showthread.php?t=7026&highlight=cheater+cable

[milovanmaric]

Thank you on your reply, at the and I will order new mini converter.