vfd 0-10v working improperly on 7i76
07 Sep 2021 23:55 #219898
by JJ48_24
vfd 0-10v working improperly on 7i76 was created by JJ48_24
The 01-10v analog vfd control is not working on my 7i76. In PncConf rpm is set correctly at 24k along with voltage at 10v. From 0-8000 rpm everything works fine. All voltage of pot is 3.3, and VFD is at 133 hz, however at 12000rpm in linux cnc the vfd only hits 165 hz, and when set to 24000 vfd is only at 200hz, and voltage across 1, and 2 on pot is 5v. The vfd works fine with the integral pot on the VFD, and the voltage reads 5v from the board, so I don't think it is a vfd issue. Any ideas?
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08 Sep 2021 02:53 #219904
by PCW
Replied by PCW on topic vfd 0-10v working improperly on 7i76
Sounds like the input is set for 10V full scale if 3.3V gives 8000 RPM (133 Hz)
Is the voltage across TB4 pins 1 to 3 always 10V regardless of spindle speed setting?
Is the voltage across TB4 pins 1 to 3 always 10V regardless of spindle speed setting?
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08 Sep 2021 14:20 #219951
by JJ48_24
Replied by JJ48_24 on topic vfd 0-10v working improperly on 7i76
YesSounds like the input is set for 10V full scale if 3.3V gives 8000 RPM (133 Hz)
Is the voltage across TB4 pins 1 to 3 always 10V regardless of spindle speed setting?
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08 Sep 2021 14:48 - 08 Sep 2021 14:49 #219956
by PCW
Replied by PCW on topic vfd 0-10v working improperly on 7i76
So what is the output voltage from TB4 pin2 when the spindle speed is set to 24000
RPM?
Also could you post your hal/ini files?
RPM?
Also could you post your hal/ini files?
Last edit: 08 Sep 2021 14:49 by PCW.
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09 Sep 2021 02:01 #220027
by JJ48_24
Replied by JJ48_24 on topic vfd 0-10v working improperly on 7i76
The voltage on tb4 when rpm is set to 24000 is 5v.
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09 Sep 2021 02:34 #220030
by PCW
Replied by PCW on topic vfd 0-10v working improperly on 7i76
Can you post your hal and ini files?
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09 Sep 2021 02:41 #220031
by JJ48_24
Replied by JJ48_24 on topic vfd 0-10v working improperly on 7i76
not at my shop rn, but next time I am over there I will send them over
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30 Sep 2021 20:33 #221911
by andypugh
Replied by andypugh on topic vfd 0-10v working improperly on 7i76
It's been a while, did you sort this out?
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