Denford Mirac conversion help

[Hellfire]

Came across these, are they worth having.
https://www.cnc4you.co.uk/Stepper-Mo...or-8Nm-Nema-34

[m_c]

Closed loop steppers are one possible option, and are a pretty good compromise between the existing standard (open loop) stepper motors, and a proper servo system.

[Hellfire]

Thanks for the help, got the servos and drivers. Went for uc300 and 3 bobs.
bm01
cp0-12v
kk01

needed additional inputs for the rotary switch on the back of the turret.
one question though, why do bobs only come with one relay. I need to be able to reverse the spindle, is it possible to use the relay on one bob for fwd and the relay on the other bob for rev.
cheers

[m_c]

Yes.
However the exact implementation will depend on how the spindle forward/reverse is controlled.

[Hellfire]

Scrub that, forgot I had two vfd's to control. One for the turret and one for the spindle. Both need to reverse. This is going to be fun

[Hellfire]

i have come to the difficult bit now, i am looking some help with a macro for a tool change. on the rear of the tool changer there is a rotary switch with 8 positions and another micro switch to tell the machine it has locked.
i have all the inputs reading on the motion controller.
when the motor goes fwd it pushes the tool plate out and then starts to rotate it, on reverse it draws the plate back in until the micro switch sees it.
should add i have no clue about macros.
cheers

[m_c]

What turret is fitted?
And are you using Mach3 or UCNC?
.
If it's a Barfuldi TOE and Mach3, unless the UCNC controller has embedded macros/programs, it won't work. Mach3 macros only have a 10Hz update rate, and 1-200ms is far too slow to manage the turret locking sequence, which requires a maximum of a 30ms delay between detecting the strobe bit and activating the locking pin, and only 50ms to reverse the motor direction.