Oopps my mistake, I misread the legend on the board yes it is 1 and 2 for the control voltage and 3 back in for the analogue. Got this machine all finished now, pic's tomorrow. The spindle works but not correctly using the spindle board supply. This supply under load on pins 1 and 2 reads 10.3 volts...

Don't you mean "got it's supply from 1 and 3 and fed it back into 2 ? https://www.stevenson-engineers.co.uk/files/lynx%2008_1.jpg The speed part of the C11G board has 4 terminals two are 12V + &- and the other two are ground and 0 - 10 volts analogue. This part of the board is isolated from any othe...

Many, many thanks.

Just what I needed and it confirms what i thought 5 and 7 start it and the pot goes on a combination of 1 2 and 3

I'll post the diagram later so it's on record.

Thanks again.

John S.

The C11G board is totally isolated provided you use a dedicated 12 volt power supply just for the 0 -10 volt analog bit. We have exactly the same problems on the Sieg X3 machine which can also be at mains. That part shouldn't be a problem it's how to switch the board on. The Lynx is live all the whi...

Thanks, I already have a spindle speed controller. I'm using the C11G board from the same people. What I'm looking for is how to switch the speed board on and what pot wires to use. Most PC controlled gear uses 0- 10 volts for the speed but the Denford has 3 wires. I can probably experiment and try ...

Doing a conversion on a Triac to Mach 3. This one has the Lynx 08 DC drive fitted. Connections are as follows:- Four large terminals, mains in [ 2] and DC out [2] Then a strip of smaller logic connectors. Only 5 of these are wired up. The 3 for the pot which have 10.2 volt to the end ones and two ma...