On 13/04/2019 01:51, Gene Heskett wrote:
Ideas folks?  I seem to be fresh out. The other VFD I put on the Sheldon
worked OOTB once the registers were set for external control.

Gene ... I use the ACS150 inverter with a 3 phase motor on the Taig conversions. This is nice because it has the manual pots and toggling between local and remote has a button on the local panel so one can fire things up without using the CNC side. It has 5 'digital' inputs that can be configured for a list of different configurations of control, but all are activated by pulling up rather than shorting out. The thing that sticks out to me is your measuring 0.6V when activating the inputs ... I think I expect '0V' ... and 0.6V sounds like a diode somewhere. Before I actually hooked up to the breakout board I wired up a toggle switch for on/off and the key element here is on the ACS150 this is wired to the +24V supply from the inverter! You need a short between GND and DCOM in order for the +24V to activate an input ... so does your inverter have a +ve supply output other than the one you indicated for the pot, or is that output designated as only used by the pot?

https://medw.co.uk/storage/attachments/62/1062/ACS150usermanual.pdf ... page 57 is the configuration I use except the inputs are pulled up to +12V on the breakout board and the OC outputs pull them to 0V. This is obviously not ideal as a failure can leave +12V on the 'go' button so the final setup has a relay on the go button currently and the plan if ever I need to reverse direction or use the other options is to add the extra relays.

Lester Caine - G8HFL
Contact - https://lsces.co.uk/wiki/?page=contact
L.S.Caine Electronic Services - https://lsces.co.uk
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Model Engineers Digital Workshop - https://medw.co.uk
Rainbow Digital Media - https://rainbowdigitalmedia.co.uk

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