Acorn Spindle Speed Won’t Adjust < resolved, loose wire>

[donaldintexas]

Having an issue with controlling spindle speed with my Acorn build. Attached is my report. I did the spindle bench test with no issues, but now I get no change in the Analog output after changing the slider on the VCP or give a M3 S* command through midi. The spindle spins as soon as it is turned on via the VCP. The system is wired per Acorn drawing S 14984 Ver: 3.

Huanyang VFD model HY02D223B, manual attached. Current settings are as follows:

Parameter Value
PD001 1
PD002 1
PD003 400
PD004 400
PD005 400
PD006 2.5
PD007 0.5
PD008 220
PD009 15
PD010 8
PD011 30
PD023 1
PD026 1
PD044 2
PD045 3
PD046 14
PD052 3
PD070 0
PD072 400
PD073 0
PD141 220
PD142 9

Looked through the bunches of Huanyang VFD threads but didn't see anything like this. Any help you can give?

Donald

[Ken Rychlik]

test the spindle with a 9v battery without acorn with the wire unplugged from acorn board. then use a volt meter to see if the board is putting out what you expect. That should narrow down which way your issue is.

[donaldintexas]

Just remove the analog control wires from Acorn and hook them to a 9v battery?

Donald

[Ken Rychlik]

Just remove the analog control wires from Acorn and hook them to a 9v battery?

Donald

Yes, it's a quick easy way to see if 9v will give you 90% of expected speed. Then you know which direction to troubleshoot.

[donaldintexas]

Thanks, Ken, found a loose wire on the analog terminal. Tightening up fixed the problem.

Donald