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- Sep 22, 2010
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Any idea what the answer to this question is? It was asked on another forum and got no response:
"I'm picking up a automotive surface grinder, its an older machine and I'd like it to give me a surface finish better then what it was originally designed to do.
It has a 5 hp spindle motor, two speeds, it has a 3 hp table motor, two speed with hi/low gear box, also a small coolant pump motor. All motors are three phase.
I want to be able to slow down the table motor to a crawl to get a better finish, much lower RA numbers than about 30 it will do now. I'd like to see 15 or better.
I don't have three phase here, so a VFD would give me my three phase needed from my single phase power. How can I use the VFD to slow down the table motor and not the other motors.
Are there VFD's for multiple motors, is there a way to wire this so I have three phase to all three motors but can only slow down the table motor?
For some reason this just isn't clicking for me now. Probably easy. I appreciate any input you might have about running this the way I need."
"I'm picking up a automotive surface grinder, its an older machine and I'd like it to give me a surface finish better then what it was originally designed to do.
It has a 5 hp spindle motor, two speeds, it has a 3 hp table motor, two speed with hi/low gear box, also a small coolant pump motor. All motors are three phase.
I want to be able to slow down the table motor to a crawl to get a better finish, much lower RA numbers than about 30 it will do now. I'd like to see 15 or better.
I don't have three phase here, so a VFD would give me my three phase needed from my single phase power. How can I use the VFD to slow down the table motor and not the other motors.
Are there VFD's for multiple motors, is there a way to wire this so I have three phase to all three motors but can only slow down the table motor?
For some reason this just isn't clicking for me now. Probably easy. I appreciate any input you might have about running this the way I need."