Ok the spindle creep was sorted with the nMIN pot on the lenze and I adjusted the nMAX pot to match the commanded speed to the actual spindle speed, as I understand it my man set the ratio within Mach,
the CS analogue I/o number 1 is connected to terminal number 4 on the isolation card so I am controlling the spindle through Mach but not through the forward and reversing relays.
uli I see the wiring on your machine terminal number 4 on isolation card is a white wire where does that go to?

i spoke to someone at boxford it's been too long ago for them to support this machine any longer as they have moved offices and cleared out any info they had on this model.
on the plus side of this the more I look at it and liable things up its starting to make more sense, but I just don't understand relays!
chris.