The CN0182 makes a brush type DC servomotor emulate a step motor, preserving all of the advantages of a step motor while dispensing with many of its disadvantages. When driven by the CN0182, an encoder equipped servomotor will track step and direction inputs like a step motor, while adding the advantages of a servomotor's high speed, high peak torque, low heating and absence of resonances. The CN0182 when used in conjunction with a suitable servomotor and encoder can replace a stepper motor and drive without having to change the indexer or its programming.

The CN0182 accepts both TTL and analog (sine-cosine) encoders. Servo "hunting" is eliminated using an analog encoder, resulting in a perfectly still motor when stopped. In either case, the encoder line count is multiplied by four internally.

The CN0182 is a PID closed loop servo. It derives velocity information from the encoder, so a tachometer is not required. Trimpots are used to adjust the proportional and derivative coefficients and servo lock is +/- 128 counts. Current limit is trimpot adjustable from 0 to 25 amps. Short-circuit and over-temperature protection is provided.

A high efficiency all n-channel MOSFET output stage and a low current consumption circuit design minimizes drive heating. An epoxy encapsulated package and a robust circuit design contributes to a reliable and rugged servo drive.