Hi All,
Could anybody tell me what makes my spindle start on closing Mach3. I'm using Ethernet smooth stepper and have spindle control board (C41). Is there a setting in Mach or the ESS that puts out a high signal to the spindle on shut down? By the way, I can run the router other ways.
Mike

Cant see how it can be a Mach issue if it is closed, sounds more like either the C41 or the VFD are the problem in how they are controlling the spindle
Hood

Hi Hood,
Thanks for replying. This issue with the spindle is going on for about 5 weeks between me and Arturo. He keeps saying to wire it the same as a diagram he sent me, but that doesn't work with my VFD. I found a way that makes my spindle programable and to stop on command, C41's relay led lites up, but it doesn't click as it should. I know this is not right, but will do untill I get a different spindle control board. Can you recomend one? I work around the above problem by shutting the control down first and Mach after.
Mike

I have just done a search for the manual and I think I found it, is this the diagram in it for your VFD?
Hood

Yes Hood,
However, on the next page (#10) it shows, 3.5 Wiring of  Control Loop Terminal, and that is what I'm showing on my pictures.
Mike

Ok so what that diag shows is you connect CM and FWD together to enable the forward rotation.
It also shows that AI is your analogue input signal and it seems to be referenced to CM.
So  really the way Arturo has said to wire in the second pic you attached should work.


What you have in the third pic is basically you have the VFD's rotation permanently enabled as you have FWD and CM connected at all times. When you shut down there is likely noise on the analogue In sterminal and thus the VFD turns the motor.

I am not sure about the C41, I remember I looked at the manual but it was a bit ambiguous as to what some of the terminals were for and I dont think Arturo actually answered when I asked.


I will have another look at the C41 manual and see if I can figure things out but it does seem the way Arturo said in Diag 2 is what you need to do.
Can you tell me, when you had it connected that way and you said it was constantly cycling, was the relay constantly clicking on/off or was it always on?

Hood

Yes, the relay kept on clicking on and off. Here is the picture of the C41.

Ok, can you attach your xml, sounds kind of like the step pin is set to the same as the relay output pin.
Hood

Which version of the C41 do you have?

Hood

Hood,
 It is Rev. 2.1.