ST3-055-04

ST3-055-04 is a Copley Controls unit in the Stepnet Compact Drives series. It provides 100 W of output power per axis for driving connected motors. Each axis supports a continuous current of 2 Apeak and a peak current of 4 Apeak for up to 1 second, allowing brief increases in motor torque. The minimum motor inductance is 200 µH per phase, while the 30 kHz PWM ripple frequency controls power delivery. A 15 kHz current-loop update rate enables rapid current regulation.

The drive has 15 digital inputs for receiving machine and control signals, along with six digital outputs for controlling external devices. Each digital output supports 250 mAdc of sink current. Three analog inputs accept variable control or feedback signals, and the DC power output supplies up to 750 mA to compatible external components. The step input supports rates up to 250 kHz for high-speed motion commands, while the encoder interface accepts feedback at up to 250 kline/s for position and velocity monitoring. CANopen communication operates at up to 1 Mbit/s for networked control and data exchange. The unit measures 121 mm in length, 70 mm in width, and 27 mm in depth, providing a compact installation footprint.