1/6/2009 9:18 AM | |
Joined: 4/16/2008 Last visit: 2/10/2009 Posts: 14 Rating:
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With most popular scheme in most of the country ,why 3RW40 soft starter tripping on equipment error fault (iedevice & failure LED ON continuously),whenmotor started via external bypass contactor. Scheme attached for the reference: Scheme description:Normaly motor started via soft starter in case due some some reason softstarter become faulty then we can start the motor with the help of external bypass contactor. can you suggest why this prblem is occuring Attachmentsingle line diagram.pdf (1040 Downloads) |
1/6/2009 9:22 AM | |
Joined: 4/16/2008 Last visit: 2/10/2009 Posts: 14 Rating:
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tripping of 3RW40 softstarter on equipment error fault |
1/8/2009 1:14 PM | |
Posts: 467 Rating:
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Hello champu, The SIRUS Softstarter 3RW40 recognize if on the output terminals (T1…T3) the line voltage is active and no ON-Command is given by terminal 3. The SIRIUS Softstarter trips in such case with failure. Our Softstarter 3RW40 has already built in a bypass contactor and an overload relay, so is it most of time not needful connecting an additional separate external bypass contactor. Only at minor cases at which a separate external bypass contactor is in use the Softstarter generate such failure message. Our suggestion is for such cases to switch off the control voltage supply on terminal A1 with a NC contact of the separate external bypass contactor. (attachment) After this wiring modification the Softstarter generate so long no failure message the separate external bypass contactor is switched on. Attachmentsingle line diagram with external bypass contactor.pdf (1001 Downloads) |
1/13/2009 6:07 AM | |
Posts: 22 Rating:
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Hi Champu, Have you checked other causes as stated above? I hope any of the above is the reason. |
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