Author Topic: Analog Output not going to zero on M04 Command  (Read 1284 times)

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Offline mgamber

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Analog Output not going to zero on M04 Command
« on: June 12, 2017, 07:25:54 PM »
Experimenting with analog spindle speed. I have the Hicon connected to a KBMM DC motor controller with the isolator board. It takes 0-10v

Turning on spindle in MDI with M03 S500 etc. works great. But when issuing M05 the spindle does not turn off. Mach4 shows it thinks the spindle has turned off but it hasn't

Any help?

Offline mgamber

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Re: Analog Output not going to zero on M04 Command
« Reply #1 on: June 12, 2017, 07:27:51 PM »
Followup;

Issuing MDI of M03 S0 does turn spindle speed "off"

???

Offline Vital System Support

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Re: Analog Output not going to zero on M04 Command
« Reply #2 on: June 12, 2017, 07:30:54 PM »

you will need to integrate the fwd/rev relay to turn off the spindle.

when you do M05, the analog voltage is still there and that's why your spindle keeps on moving.

if you have a forward/reverse relay connected to the spindle drive, then it will properly turn on/off.



Offline mgamber

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Re: Analog Output not going to zero on M04 Command
« Reply #3 on: June 12, 2017, 07:49:05 PM »
ok, thanks for the quick response. That's kind of what I figured but thought I would ask. The KBMM has an Inhibit function that I will use, already tested this with a jumper wire and it brings motor to zero.