Huanyang vfd HY0D7543B

It is for my mills spindle and I bought that vfd some years ago.
Connected and tested manusly via frontpannel. All fine. Now I want to connect lcnc.

I use 2x signals plus 1x Estop.
Mainly want RUN and FOR/REV + ESTOP and use first three multi-purpose inputs.
According to deliverded paperbook
PD044 = 1
PD045 = 5
PD046 = 13 ( in newer/actual pdf it seems to be 9)
Working nearly as expected.

I need to revert direction while running. Fx. for threading.
Tested until now only with switches on cables.
1. If I start RUN without FOW/REV it turns forward. Taking RUN away it stops. Perfect!
2. Connecting FOW/REV while running no reverting happens. Dammed!
3. Starting with both singals it turns backwarts as expected. Good.

Has anybody an idea how i can have 2. without disabling RUZ for a moment?

THX Mike

Do you have an analog signal to the VFD for speed control? I rigged a lowpass filter component to slow the change of the speed command, and when the speed goes through zero the forward signal flips off and the reverse flips on.

Jon

That is a good approach!
THX