VFD data fluctuation
VFD data fluctuation
(OP)
Hello guys
My VFD output Voltage, Current and frequency are fluctuating (what i show on VFD LCD), is that normal ? if not what can be the reason?any thing i can do?
thanks in Advance.
My VFD output Voltage, Current and frequency are fluctuating (what i show on VFD LCD), is that normal ? if not what can be the reason?any thing i can do?
thanks in Advance.





RE: VFD data fluctuation
VFDs are powerful sources of RFI - if the VFD is not properly grounded and any factory-provided shielding in place, low-level signals can easily be disrupted.
"The more the universe seems comprehensible, the more it also seems pointless." -- Steven Weinberg
RE: VFD data fluctuation
You need more information on what is happening and what is supposed to be happening.
"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln
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RE: VFD data fluctuation
Dpc ,motor is running pretty good ,The VFD is GE AV300 i ,and that is with door closed.
Jraef you are right it is programmed as torque follower , can this fluctuation damage the VFD in long term ?
RE: VFD data fluctuation
Only situation is if the speed varies down to speeds where cooling is reduced. Is there an external cooling fan that works independent of motor speed?
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: VFD data fluctuation
In other words, you hired it to d a job, it's doing it, just pay no attention to that man behind the curtain.
"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln
For the best use of Eng-Tips, please click here -> FAQ731-376: Eng-Tips.com Forum Policies
RE: VFD data fluctuation
BTW - is there a man behind the curtain? Never thought of it that way...
Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: VFD data fluctuation
He loos a lot like you actually...
RE: VFD data fluctuation
RE: VFD data fluctuation
RE: VFD data fluctuation
Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: VFD data fluctuation
RE: VFD data fluctuation
"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln
For the best use of Eng-Tips, please click here -> FAQ731-376: Eng-Tips.com Forum Policies
RE: VFD data fluctuation
RE: VFD data fluctuation
What, exactly, is the fan doing?
Keith Cress
kcress - http://www.flaminsystems.com