Drive-Cliq comm problem

[slcman]

Hi all, I got trouble on my Drive-Cliq network. I lost Drive-Cliq comm for no reason. I replace wiring and wire is not close to power and motor line (not EMI). We have 16 drive divide in 4 group: 2 Simotion D445 control 4 drive 2 CU320 control 8 drives I check online % of utilisation of CU320 and it's close to 55%. I only lose comm on drive connected to CU320, I attach a screen shot. Also I got alarm 30041 many time while running. I check 24Vdc supply voltage with a good DMM (min latch 1 msec), I change power supply for that drive and still got this alarm. Any idea?

[jrw]

Has this been working and now its not? Can you post the DriveCliq topology? From the D445 to the CU's- is this profibus or profinet? Can you just post the alarms and not the history- a little easier to see (I think)

[slcman]

Has this been working and now its not? Never work. It can run 1 month without any fault and I can get 3 fault in the same week. Can you post the DriveCliq topology? see attachement From the D445 to the CU's- is this profibus or profinet? Profinet Can you just post the alarms and not the history- a little easier to see (I think) When I went online, alarm was not present. Someone cycle the power of the machine. --------------------------------

[jrw]

Ive done quite a few startups using S120 and I havent had any problems With that being said- I ALWAYS put the motor on the last DriveCliq port for its Motor Module This is in the manual too. Is this something you can change easily? Is this a problem with ALL CU320's or just one? Other than cable layout (and you said you checked that and have cables away from power cables) that is all I can suggest at the moment. But you are sure the 24vdc is not intermittent?? Edited February 24, 2011 by jrw