Product Description:

The SC722A-001-PM72005 is a servo command controller manufactured by Pacific Scientific for the SC720 Command Controllers series, also identified internally as the 720 Series. Classified in the product group as a servo controller, it functions as a torque and velocity controller for brushless motors in industrial cells. Resolver signals are accepted and reproduced by an onboard encoder emulator, letting downstream drives receive incremental feedback without extra transducers. These capabilities allow the unit to coordinate axis motion, manage acceleration profiles, maintain positional accuracy, and support repeatable movement in automated assembly and material-handling stations.

Electrical ratings describe the power available to the drive section. With a continuous output of 3.8 A, the controller sustains matched actuators under steady load while delivering 1.1 kW of mechanical power from a three-phase 240 VAC supply. For acceleration bursts, the device supplies 7.5 A and up to 2.2 kW, drawing from a 320 Vdc internal bus established by the line-side rectifier. The alternate 120 VAC source produces a 160 Vdc bus, and three-phase bus current is limited to 4.5 Arms to protect upstream wiring. A 3 kW shunt path dissipates regenerated energy during braking. Controller self-heating reaches 45 W at 100% duty, so enclosure cooling must account for that thermal load. Torque or velocity references arrive through an analog ±10 V input, and resolver position data is digitized with 12-bit resolution for closed-loop processing.

System accuracy is ±22 arcmin, while the emulator delivers 1024 ppr so external counters register fine incremental moves. When coupled to the specified motor, the loop sustains 8000 rpm and produces 6.5 lb-in of peak torque during transient events without losing stability. The controller weighs 13 lbs, keeping rail load low and simplifying service access.