Hi Peter,

Certainly, one side of the contactor coil is feeded directly from F6, and the other side is feeded by MCU inside controller with a PWM signal that allows to excite a 24v coil.

There are some machines that carry a dc/DC converter mounted under the relay card mainly used for feeding options like for example lights. But there are machines that do not have this converter. This converter has nothing to do with the contactor feeding.

Should check that you have:

- positive from F6 in X11.4 (Its oK)
- positive from F1 in X11.2
- Positive from key switch to X11.15

Should open the controller cover to check driver burns in MCU

Check your mail and let me know if can help you.

Regards