Product Description:

The SC724A-001-PM72028 is a servo controller produced by Pacific Scientific for the SC720 Command Controllers series. In an automation cell, it provides closed-loop torque and velocity regulation so motor output follows process demand during material handling, packaging, and coordinated conveyor operation. It interfaces with a 240 Vac three-phase bus supply and serves as the actuator control point for rotary loads that require stable speed and repeatable motion response.

Internally, the controller rectifies the line input to a 320 Vdc bus and supports continuous operation at 15 A while tolerating momentary surges up to 30 A. It delivers a continuous output of 4.5 kW and uses a 20 kHz output-ripple frequency to help reduce mechanical chatter in the driven system. As a torque and velocity controller, it can drive motors up to 3000 rpm. Resolver feedback supports closed-loop regulation, and the unit is intended for systems with inertia up to 17.70 × 10⁻³ lb-in-s². The hardware also monitors bus energy and works with ±10 V velocity commands to support smooth transitions between operating segments.

The controller also provides a peak power band of 9 kW and a peak stall torque of 121 lb-in for short-duration demand above the continuous operating range. An integrated encoder emulator presents 1024 ppr signals to the host PLC, while an auxiliary 12-bit RDC channel improves low-speed control. Positioning accuracy is rated at ±22 arcmin across bidirectional moves, helping the controller maintain stable response during reversals. Installation is supported by a passive cooling path, and the feedback chain together with the ±10 V command inputs allows loop closure without additional interface cards. The module has a chassis mass of 40 lb, which should be considered when planning panel support and mounting space.