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Problem with powering on Simodrive611

Created by: Dovi3D at: 12/21/2023 8:20 AM (9 Replies)

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12/21/2023 8:20 AM	Rate (0)
Dovi3D Joined: 12/21/2023 Last visit: 6/30/2025 Posts: 13 Rating: (0)	Hi everyone, When restarting the machine from main switch SimoDrive611(6sn1145-1ba02-0ca1) does not power back on. Power to the Simodrive611 is coming from Line filter packet: 6SN1162-0GA00-0CA0 6SN1111-0AA01-2CB0 While testing I've found out that SimoDrive only turns back on when condensators are discharged to around 50VDC or below. If voltage is over 50 and machine is turned back on, simodrive shows no life at all, no LEDS light up, nothing. So basically, simodrive is unable to start up before condesators are discharged. Maybe some one had a similiar problem? Any ideas ?

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12/21/2023 11:03 AM	Rate (0)
Dovi3D Joined: 12/21/2023 Last visit: 6/30/2025 Posts: 13 Rating: (0)	Setup pictures are attached: Attachment IMG_8391.jpeg (498 Downloads)

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12/21/2023 11:04 AM	Rate (0)
Dovi3D Joined: 12/21/2023 Last visit: 6/30/2025 Posts: 13 Rating: (0)	Dovi3D Setup pictures are attached: Attachment IMG_8390.jpeg (491 Downloads)

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12/22/2023 4:44 AM	Rate (1)
PISCEAN 2010 Posts: 8092 Rating: (884)	Hello, Which is controller? From the attached snaps these are 611D drive. Please check drive enable & pulse enable signals of infeed module which will help to find out the reason of problem in powering drive module. Moreover P600 & N600 terminals of power infeed are connected to DC bus. As such request you to check infeed module ready signal which might be getting release after voltage limiter value. So check the OEM trouble shooting/maintenance manual.
PISCEAN 2010 Posts: 8092 Rating: (884)
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12/22/2023 1:31 PM	Rate (0)
Dovi3D Joined: 12/21/2023 Last visit: 6/30/2025 Posts: 13 Rating: (0)	There is no DC power coming from the P600,N600 terminals. Well, there is.. but only from condesators that are still uncharged. When machine is turned off and turned right back on, Input voltage u1,v1,w1 to simodrive611 is present. But P600,N600 terminals only show a dropping voltage from the condensators. When voltage between P600 and N600 terminals drops below ~50VDC when switching the main supply on machine starts up normally. If its over 50 vdc, no power comes to P600,N600 just a decreasing voltage reading When measuring in this scenario, drive enable 0 volts, pulse enable 0 volts, ready signal 0 volts

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12/24/2023 10:46 AM	Rate (1)
nulizhang Platinum Expert Joined: 10/17/2007 Last visit: 1/13/2026 Posts: 4574 Rating: (416)	Suggest you disconnect E/R module from other modules, test it , to see its function Dovi3D There is no DC power coming from the P600,N600 terminals. Well, there is.. but only from condesators that are still uncharged. When machine is turned off and turned right back on, Input voltage u1,v1,w1 to simodrive611 is present. But P600,N600 terminals only show a dropping voltage from the condensators. When voltage between P600 and N600 terminals drops below ~50VDC when switching the main supply on machine starts up normally. If its over 50 vdc, no power comes to P600,N600 just a decreasing voltage reading When measuring in this scenario, drive enable 0 volts, pulse enable 0 volts, ready signal 0 volts
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12/27/2023 8:22 AM	Rate (0)
Dovi3D Joined: 12/21/2023 Last visit: 6/30/2025 Posts: 13 Rating: (0)	I've tried disconnecting surge limiter(6SN1111-0AB00-0AA0) from the E/R module. Without surge limiter connected to dc bus this problem disappears and everything starts working normally. Tried swapping this surge limiter with a known good one and back to the same problem. So the problem should be the E/R module? I'm just a little confused because i was told that E/R module was already swapped with a new one or a known good one and the same problem remained (I'm a new worker at this company).

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12/27/2023 8:48 AM	Rate (0)
Dovi3D Joined: 12/21/2023 Last visit: 6/30/2025 Posts: 13 Rating: (0)	Tried disconnecting the e/r module from other modules, still the same problem remained. Only disconnection from surge limiter "fixes"the problem

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12/28/2023 5:18 AM	Rate (1)
nulizhang Platinum Expert Joined: 10/17/2007 Last visit: 1/13/2026 Posts: 4574 Rating: (416)	so please use without surge limiter Dovi3D Tried disconnecting the e/r module from other modules, still the same problem remained. Only disconnection from surge limiter "fixes"the problem
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12/29/2023 3:37 AM	Rate (1)
PISCEAN 2010 Posts: 8092 Rating: (884)	Dovi3D Tried disconnecting the e/r module from other modules, still the same problem remained. Only disconnection from surge limiter "fixes"the problem Hello, It looks like Capacitors or resistors of surge limiter are malfunctioning i.e. capacitors due to aging looses its die-electric property, more ripples or resistors connected in capacitor circuit malfunction which would create such problem. I suggest you to replace surge limiter so that E/R module life can be improved. Hope this helps.
PISCEAN 2010 Posts: 8092 Rating: (884)
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