8/27/2012 3:06 PM | |
Posts: 2 Rating: (0) |
We deal with Profinet alarm 1989 on S120 CU - look to attached print screen. Probable reason is EMC and source is appearing to be Sinamics G120 - look to picture of cabinet. Three CU's next to G120 shows A1989. We found large ground currents {130mA} in Profinet cable from G120. We changed routing of Profinet cable, and A1989 on first CU disappears. Problem is that sometimes {10x a day} drive stops with no alarm only Switch on inhibit is output. PLC analyzer proves that CW is constant, but SW bit0,1,2,4,5,10 falls to log.0 and bit 6 is set to 1. Profinet send clock is 1ms, and update time is 16ms. Why drive stops without any fault or alarm message? Should we connect screening of Profinet cable to ground or close G120 to Faraday cage? Do you have any suggestion? AttachmentMZL1.zip (93 Downloads) |
8/27/2012 3:19 PM | |
Joined: 5/12/2006 Last visit: 9/18/2024 Posts: 22364 Rating: (3011)
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Hello, which Ti/To time do you have configured for the S120 Drive? Regards Christoph |
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