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capacitor

Created by: geddawy_79 at: 10/30/2015 3:47 PM (8 Replies)

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10/30/2015 3:47 PM	Rate (0)
geddawy_79 Posts: 30 Rating: (0)	dears We have damage in the simovert masterdrive. capacitor burned 6sy7000-0ad54 what is reason and what can i do before replace it thank you Attachment capacitor.jpg (383 Downloads)
geddawy_79 Posts: 30 Rating: (0)
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10/30/2015 3:53 PM	Rate (0)
UMENCHO Diamond Expert Joined: 3/21/2006 Last visit: 11/1/2024 Posts: 10229 Rating: (1181)	Hello, Was the drive in operation all the time, without long stoppage? Is it new one or old? What are the ambient conditions around? How happen that? Best regards, Hristo Mihalev

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10/30/2015 4:04 PM	Rate (0)
geddawy_79 Posts: 30 Rating: (0)	welcome this situation happened after power off short time and this drive is old
geddawy_79 Posts: 30 Rating: (0)
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10/30/2015 4:13 PM	Rate (0)
geddawy_79 Posts: 30 Rating: (0)	UMENCHO Hello, Was the drive in operation all the time, without long stoppage? Is it new one or old? What are the ambient conditions around? How happen that? Best regards, Hristo Mihalev happened when the drive in operation time and this drive is old this happened while drive was the normal operation
geddawy_79 Posts: 30 Rating: (0)
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10/30/2015 4:17 PM	Rate (0)
IBN-Service Posts: 8946 Rating: (999)	Capacitors die from time to time. Is Inverter still working? Then replace capacitor and everything is fine. If Inverter is not working any more, there is a chance, that rectifier is damaged.
IBN-Service Posts: 8946 Rating: (999)
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This contribution was helpful to 1 thankful Users geddawy_79

10/30/2015 4:52 PM	Rate (0)
geddawy_79 Posts: 30 Rating: (0)	this problem happened after power off and on again i am not sure after or before power on this drive working in sts crane on the hoist function my question what is the reasons for capacitor burned we can replace capacitor bank 6sy7000-0ad54 by new 6sy7000-0ae00 and we can cancel one capacitor from capacitor bank
geddawy_79 Posts: 30 Rating: (0)
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10/31/2015 6:50 PM	Rate (0)
geddawy_79 Posts: 30 Rating: (0)	any one help me plez
geddawy_79 Posts: 30 Rating: (0)
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11/1/2015 1:01 PM	Rate (0)
IBN-Service Posts: 8946 Rating: (999)	geddawy_79 ... and we can cancel one capacitor from capacitor bank That is not easy to answer. Specially with hoist application, there is a big chance of overload DC link voltage. Nobody can tell you if it is allowed.... Perhaps you may try for a short test? I can't tell you.
IBN-Service Posts: 8946 Rating: (999)
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11/1/2015 1:32 PM	Rate (0)
Graeme Platinum Expert Joined: 6/4/2008 Last visit: 11/7/2024 Posts: 1503 Rating: (325)	Hi, IBN is correct, this can be difficult to find the root cause. Here is my offering, we were called to a similar issue on a chassis VC drive which was around 12 years old. See pictures attached, there was quite a spectacular explosion (even the panel door required panelbeating ), on further investigation, all the DC insulator sheets had become brittle and had failed. One reason - HEAT. Unsurprisingly, there was rectifier damage and in our case, the IGBT's and IGD card had to be replaced as well. All the DC busbar "plates" had to be replaced, so in effect, a whole new chassis section (Well actually, we saved the pre-charge resistor ) I'm not saying this is your cause, but it is something to consider. Yes capacitors do go boom from time to time, but in my experience it is still rare. Masterdrives are quite hardy, they will protect themselves reasonably well from voltage spikes and output events (Motor & cable shorts etc) so unless it was a particularly bad supply transient, but you would know about that due to other equipment issues. Regards, Graeme Attachment Caps.zip (392 Downloads)

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