Hi ulda
Thankyou for your reply.
Yes would very much like to see your configuration files.
I do have the logic documentation pages, but the machine was a not running when I obtained it so I have never run the spindle.
Think I can see a lot of what is occurring from the spindle speed table and the diagram of the three gear selection motors
rotating CCW each has three micro-switches representing nine bits in total, for inputs when the motors are driven into the correct gear position for the speed selected they trigger three outputs that switch off each of the 3 three selection motors in that sequence, please correct me if I am wrong.
I was originally going to use just an inverter only for spindle, but I like the look of the gearbox and the spindle power advantages it gives, the two speed motor may only be used in the high range (2800rpm) because it only covers 31,40,50rpm speeds at (1400rpm) and the motor control and switching on / off /direction, all done by the inverter in place of the old mass of reversing control contactors.
Regards
Gary