TUNING COPLEY AMPLIFIERS

Initial settings:

Loop Gain-----Full CCW
Balance-------- Don't Adjust Yet
Tach Gain----- Full CCW
Integ Freq------Full CCW
Ref Gain--------Full CW

With Servos Off

Set motion card off set for OV (.005V) at pins 4 & 5 on brown connector on each of the Copley amps.

Turn Servos ON.

  • INTEG FREQ -----CW until buzz, then CCW to stop buzz, then 1 more turn CCW
  • LOOP GAIN------CW UNTIL VIBRATION, then CCW to stop vibration, then 1 more turn CCW.
  • NOTE: The vibration is very slight. You must have your hand on the motor to feel it.
  • BALANCE---------Jog Mode: CTRL-E at rest: adjust for 0
  • TACH---------------Jog Mode: CTRL-E in Med Jog (2): Jog + and Jog-; adjust for same number ( 2 counts) in each direction. Number should be about 100.
  • REF GAIN---------Jog Mode: CTRL-E in Med Jog (2): Jog + and Jog-; adjust for ± 100 re-adjust BALANCE for (CTRL-E at rest).
  • TACH (again)-------Jog Mode: CTRL-E in Med Jog (2): Jog + and Jog-; adjust for same number (+2 counts) in each direction. Number should be about 100.