Product Description:

The SMC-150 is a compact stepper motor drive manufactured by Kollmorgen as part of the SMC Motion Stepper Drives series. Intended for industrial automation, it interfaces low-level motion controllers with two-phase stepper motors, converting pulse trains into regulated winding currents that advance the shaft in precise angular increments. The module provides position control for indexing tables, labeling heads, and small pick-and-place systems where servo feedback is unnecessary.

The drive employs a bipolar chopper output stage that modulates winding current at high frequency, allowing efficient torque delivery from a 16–32 VDC supply. Nominal phase current is limited to 2 A, helping prevent overheating during continuous operation. Command inputs use a pulse-and-direction control scheme, so a host motion card can increment position with clean edge timing. The controller can switch between full-step and half-step operation to balance smooth motion with available static torque. Three power pins route the supply and return conductors, while ten signal pins carry the step, direction, and enable signals. The push-pull step output can source or sink 50 mA. A 4.7 kΩ pull-up resistor biases the logic to 5 V when the output is idle, and dual winding terminals energize the two motor phases.

The enclosure measures 120.6 mm in width, 92.2 mm in height, and 28.7 mm (1.13 in) in depth, enabling dense panel layouts beside PLC I/O cards. Three #6-32 tapped inserts anchor the housing to a backplate without requiring external brackets. Signal wiring terminates on a ten-channel header, and a separate block provides the power connections. All command lines accept TTL-compatible logic levels, supporting direct connections to common motion-control hardware. The output buffer can drive LEDs or optoisolators when the drive communicates motion status. The integrated bias network eliminates the need for additional pull-up components in the control wiring.