Help please, I’m trying to figure out how to turn 2.2kw spindle on with mach 3 with the mach 3 5axis break out board. Only problem is I have 5 stepper motors attached. With pins 2-9, 16/17 being used already, I don’t know how to turn spindle on without removing a stepper motor. Any ideas how to get the spindle relay to work to control spindle on/off?

I have pretty much wired and set up mach 3 properly I believe. I just have to many stepper motors for this break out board? If I disable my stepper motor, B Axis, Pin 16-17. I can have spindle relay set up with Pin 17 and I can turn spindle on but I cant use that stepper motor.

Only thing I can come up with is maybe using one of 2 pins I have left (14 or 1) and setting up spindle relay through that but its only 5V power as opposed to 10V. Not sure if that would even work. Or if I can avoid not need spindle relay at all.

Attached breakout board and VFD manual I have. Spindle is 2.2k 220v 10amp.

Any help would be appreciated.
Thanks, Aaron.