Product Description:

The SMC-1156 is a stepper drive released by Kollmorgen within the SMC Motion Stepper Drives series. It accepts an analog command signal and delivers phase-sequenced power to matched stepper motors, allowing closed-loop motion positioning in machine tools, pick-and-place rigs, and indexing tables. By combining a microstepping power stage with onboard scaling, the unit links higher-level PLC or motion controller outputs to the motor windings without requiring additional interface hardware.

The control side has 6 analog port pins that carry the velocity or position reference, while 8 auxiliary inputs allow a controller to enable, reset, or change the operating mode without rewiring the main connector. A bank of 50 main I/O pins consolidates limit switches, fault signals, and status flags on a single ribbon header. The drive stage operates as a high-voltage analog input driver with a scalable analog input, allowing the input range to be adjusted for ±5 V or ±10 V sources. Five motor output terminals route the two-phase currents and shield drain to the stepper leads. Two bus fuses protect the internal DC rail from short-circuit events. A separate line fuse protects the incoming mains circuit.

Power is supplied at a line voltage of 115/230 VAC, which is selected through a jumper to accommodate either supply level. The converter draws a maximum input current of 10 A during acceleration. It operates with either a 50 Hz or 60 Hz line frequency, allowing installation on power grids that use either frequency. The steel front panel has a height of 9.250 in and a width of 6.250 in, enabling placement in standard 10-inch subracks while leaving space above heat-dissipating components for airflow. The bus and line fuses are mounted behind the bezel, where they remain accessible without disturbing the main signal wiring or motor connections.