Mitsubishi Freqrol A500

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cncjeff1
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Mitsubishi Freqrol A500

Post by cncjeff1 »

Does anyone know if there is a command to hold the spindle stationary when using the listed VFD (like a spindle orientation, but not position dependent), without relying on a spindle encoder and the added PG card?
joneg
Posts: 22
Joined: Wed May 19, 2010 5:36 pm

Re: Mitsubishi Freqrol A500

Post by joneg »

i think you are out of luck, you need a servo system to do that not a vfd
cncsnw
Posts: 1892
Joined: Wed Mar 24, 2010 5:48 pm

Re: Mitsubishi Freqrol A500

Post by cncsnw »

The A500 will do that, but only in closed-loop vector mode using encoder feedback. I do not know of any VFD that can hold position without encoder feedback.
cncjeff1
Posts: 28
Joined: Mon Apr 27, 2020 2:09 am
Acorn CNC Controller: No
Allin1DC CNC Controller: Yes
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: Yes
DC3IOB: Yes
CNC12: Yes
CNC11: Yes
CPU10 or CPU7: Yes
CNC Control System Serial Number: none

Re: Mitsubishi Freqrol A500

Post by cncjeff1 »

RESOLVED>That's what I thought. I knew it could be done with an encoder connection and the appropriate accessory card, I was just looking for ways to accommodate the client's request.
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