VFD Is tripping when command stop is given |
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VFD Is tripping when command stop is given |
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| Guest__* |
 Jan 16 2005, 05:18 AM
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#1
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Guests  |
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
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Jan 16 2005, 05:52 PM
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#2
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Posting Freak  Group: Moderator Posts: 2,115 Joined: 24-April 02 From: Christchurch, New Zealand Member No.: 1 |
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, -------------------- Mark Empson administrator
Skype Contact = markempson | phone +64 274 363 067 LMPForum | LMP Tech Warehouse | L M Photonics Ltd | Empson family | Advanced Motor Control Ltd | LMP Software | Mark Empson Website |
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Jan 31 2005, 05:04 PM
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#3
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 Posting Freak Group: Moderator Posts: 658 Joined: 22-February 03 From: USA, California Member No.: 285 |
I would also make sure that you do not have a safety system which disconnects power every time you stop the drum.
-------------------- "He's not dead, he's just pinin' for the fjords!"
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