Thanks for that, at first I thought it was something siezed but after diconnecting the drive everything runs freely, I spoke to the engineer that comes into work and explained the symptoms and he said it was most likely a transistor that has failed in the drive card that alows it to `miss` in slow t...

Hi there, I`m new to all this so be gentle with me, I`ve got a problem with the z axis, when in manual mode it is erratic (judders?) on slow traverse but its ok on fast traverse, in cycle it looses itself when traversing probably because its an open loop system? I think the problem is in the axis dr...