Product Description:

The SC722A-001-PM72032 command controller is manufactured by Pacific Scientific for the SC720 Command Controllers series. As a torque and velocity controller, it regulates brushless servo motors in closed-loop positioning tasks found in packaging lines, web-handling equipment, and electronic assembly. The unit belongs to the servo controller product group, interfaces with resolver feedback, and provides an encoder emulator for downstream devices. By processing analog velocity commands and executing pulse-width-modulated outputs, the controller supplies consistent drive signals for motion integration inside multi-axis automation cells.

Electrical performance is anchored by a DC bus of 320 Vdc, created internally from a 240 Vac three-phase supply. Under continuous duty, the drive can deliver a phase current of 3.8 A, which corresponds to an output power of 1.1 kW to the connected motor. For rapid acceleration or transient load changes, the inverter permits a peak output of 7.5 A. Switching devices operate at 20 kHz, a frequency that reduces audible noise and improves current resolution. When paired with a matched motor, the controller supervises shaft speed up to 1500 rpm and synchronizes that velocity with feedback from its 1024-ppr encoder emulator.

System torque ratings place the continuous load limit at 25 lb-in, while momentary overloads can reach a stall value of 56 lb-in without a thermal trip. Position data for diagnostic routines is digitized at 12-bit resolution by the resolver-to-digital converter, giving 4096 discrete counts per revolution for control loops finer than the emulator output. The shunt regulator can absorb 3 kW of regenerated energy during deceleration, and a motor inductance of 49 mH helps smooth current ripple. A ±10 V velocity command interface and a 13 lb enclosure weight support cabinet mounting in compact machinery.