Dyn4 wiring qeuestion

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Setlab
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Dyn4 wiring qeuestion

Post by Setlab »

I know you said not to Marty but I couldn't resist, I bought a DMM servo for my acorn retrofit spindle motor. The schematic I received from DMM says to wire it as a spindle drive I'll connect into H5 and H8, except there is no H5 on my board. I'm assuming from this schematic from DMM and current schematics from the Centroid webpage about dyn4s that before the included relay module was a thing the H5 terminal area was located there?

It appears that I'll have to wire my dyn4 drive into H3 where I would wire up a 4th axis then just tell the acorn wizard that's where my spindle motor is located? In the future then because my spindle motor will be wired to the H3 location, if I build a 4th axis I'll need an ether1616 expansion board to accomplish that?
martyscncgarage
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Location: Mesa, AZ

Re: Dyn4 wiring qeuestion

Post by martyscncgarage »

When it comes to using DYN4 and their AC Servo as a spindle motor, you are on your own. I have attached what I have that came from DMM. It may be outdated.
If you get it going and tuned properly, I would like to see a video of the machine rigid tapping and peck rigid tapping....
Good luck!
Marty
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DYN4AcornSpindle_R3.pdf
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Setlab
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Re: Dyn4 wiring qeuestion

Post by Setlab »

Thanks Marty, ya that was the diagram I was looking at. Can't be that difficult to get wired if other guys have done it I can probably find out how to.

I'll post up a wireing diagram when I do.
SpacedmanSpiff
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Re: Dyn4 wiring qeuestion

Post by SpacedmanSpiff »

Dear Setlab,
I too have gone the dyn4 rout for a spindle motor. I have mine wired to IN5 for spindle OK signal. Spindle enable to relay 1 and direction to relay 2.
I have the analog signal on H8. I set relay 1 as "VFD enable" and relay 2 as "VFD direction" in the acorn wizard. you will have to follow the wiring diagrams in the DMM manual to get them to work. wire circuit "A" for relay 1 and wire circuit "C" for relay 2. An issue i ran into is that the acorn PLC disables the VFD enable signal immediately upon spindle stop or M5 commands. Dyn4 does not like this and will throw an overvolt alarm. CNCSNW was kind enough to show me the way to correct this in the PLC code. (Solved) acorn PLC programming change. For dyn4 servo spindle control. is that thread.
all the best
Sean
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