X Y and Z Drives not working

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Clive
CNC Apprentice
CNC Apprentice
Posts: 36
Joined: Wed 13 Mar , 2013 12:45 pm
Hardware/Software: Novamill/Mach3
Location: North Yorkshire

X Y and Z Drives not working

Post by Clive » Wed 30 Oct , 2024 12:58 pm

Hi,
I'm hoping that someone can point me in the right direction to restore my Novamill back to full health.

It was converted to Mach3 about ten years ago by a guy called Tom (Angel-Tech) who used to post on here.

It has been great ever since being converted but when I went to use it this week, the the X, Y and Z drives were all dead. The spindle still operates.

If I tell it to home all drives via the Mach3 screen, the Z position on the pc changes but there is no actual movement. I have to stop it via the Mach3 screen.

The control board is a Baldor F391 version 1.

Any help would be much appreciated as I have no idea what voltages are supposed to appear or where!

Cheers

Clive

PS I have checked all the fuses that I can see.


Update: I found some useful diagrams on another thread that let me identify where the 24v supply came onto the board. This showed that there wasn't a supply.
However, when I put my DVM across the 28v AC supply there was a strange buzzing noise, which stopped before I could react to switch off power.
When I closed the box and switched on the machine it was working again.
Is there a relay that might have got stuck>
Regards

Clive


It is perfectly possible for a man to be a fool but not to know it. Unless he is married!

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