Hi there, i need some input from you guys. I have this Siemens VFD installed in our plant. It drives a 11kw motor to rotate a Drum/cylinder. All of the time when i stopped it, the VFD gives an alarm of phase loss. I tried to measure the voltage while stopping but the voltage is present at all phase. I have tried to adjust the ramp down time but no success is obtained... Hope you can help me on this.. TNX
VFD Is tripping when command stop is given
Started by
Guest_Anonymous_*
, Jan 16 2005 05:18 AM
2 replies to this topic
#2
marke
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Posted 16 January 2005 - 05:52 PM
Hi
I have come across this type of performance if the inertia of the drum is too high, or is unbalanced.
I would try to set the ramp down period to a long setting, or to set the stop mode to coast down.
Best regards,
I have come across this type of performance if the inertia of the drum is too high, or is unbalanced.
I would try to set the ramp down period to a long setting, or to set the stop mode to coast down.
Best regards,
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#3
jraef
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Posted 31 January 2005 - 05:04 PM
I would also make sure that you do not have a safety system which disconnects power every time you stop the drum.
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