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| Phase Converters and VFD Running 3 phase machines on single phase power and variable frequency drive discussion |
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#1
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I just got a Hitachi WJ200 for my Bridgeport, and I in the manual it talks about harmonics on the power lines and sine wave irregularities and alot of other stuff I don't know much about. My concern is will my VFD play nice the way I am going to wire it? I have a main line coming in to the box(220v 6/2w ground),going to a disconnect then distributing into two fuse blocks one for the VFD (30amp per manual). And one for my 1500 watt DC power supply for my servos(15amp). My main question is will my power supply have any neg. effects on my VFD wired this way, or vice versa? |
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#2
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| VFD's can reflect low frequency harmonics back on to the line, if this is a concern you could put an inductor at the input to the VFD, these come mainly in 3 ph types so you would only use two of the phase inputs. I don't see it causing to much problems with the P.S. as the P.S. will most likely tend to have a cancelling effect to higher frequency signals to it input. Al.
__________________ CNC, Mechatronics Integration and Machine Design. “Logic will get you from A to B. Imagination will take you everywhere.” Albert E. |
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#4
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| If I was going to use anything I would use a three phase inductor on the output, between motor and VFD, it is easier on the motor and the drive. Al.
__________________ CNC, Mechatronics Integration and Machine Design. “Logic will get you from A to B. Imagination will take you everywhere.” Albert E. |
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