Product Description:

The SC323A026 command controller is produced by Pacific Scientific as part of the SC320 Command Controllers series. It is an electronic module that supervises servo operation by regulating current and issuing torque or speed references to matched motors. This lets automated machinery maintain precise motion under changing loads in assembly, packaging, and material-handling lines. It is intended for motion-control systems that require stable reference generation and consistent axis response during normal operation.

The controller accepts an input supply of 115/230 VAC, so the unit can be wired to either low or standard industrial mains. Its input also supports 1/3 Phase operation, which helps when only single-phase power is available. Internally, the power stage tracks a line frequency of 50/60 Hz, so no line-frequency selection jumpers are required. For continuous operation, the current regulator delivers 7.5 A, while startup and rapid-acceleration events can draw up to 15 A for short intervals. This short-term current headroom supports faster response during starts, reversals, and sudden load changes. The full-load current is 6 FLA for circuit-breaker sizing, and thermal protection helps prevent overcurrent faults.

The controller supports Torque/Velocity control, allowing closed-loop torque mode for tensioning tasks or velocity mode for speed regulation. A resolver is the primary feedback element, and its analog signals are digitized by a 12-bit RDC so angle data stay aligned with the internal control loop. Because the resolver signal is processed inside the controller, feedback remains stable in typical industrial environments. When digital quadrature output is required, the board supplies 1024 PPR encoder emulation for direct use with PLC high-speed counters. Resolver calibration compensates for mechanical offset during operation. Electrical position is maintained within a tolerance of ±22 arcmin, which provides suitable resolution for medium-accuracy positioning systems.