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ACR to Compumotor drives -- Resistor packs

With Gemini, ViX, Aries, Compax3, Dynaserv drives pull the resistor packs on the ACR8020, 8010, 2000, 1500, and 1200. Leaving the resistor pack in the socket can cause faulty encoder operation and possibly severe encoder damage. Each resistor pack corresponds to a single encoder on the board.

The ACR1505 leaves the factory set up to be differentially line-driven by Parker's sinusoidal-commutation drives. The resistor packs are isolated, termination resistor packs which differs from the other ACR controllers listed earlier.

ACR9000 does not have or need resistor packs.