SC322A-001 Pacific Scientific
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The Pacific Scientific SC322A-001 belongs to the SC320 Command Controllers series and is designed for torque or velocity control modes, operating in a four-quadrant control configuration. This controller features a continuous current of 3.8 A, a peak current of 7.5 A, and includes an integral power supply for use with 120 or 240 VAC input voltage. It utilizes a resolver as primary feedback with a resolution of 12 bits and encoder emulation at 1024 PPR.
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Product Description:
The SC322A-001 is a command controller manufactured by Pacific Scientific as part of the SC320 Command Controllers series. Intended for single-axis automation, the module combines power conversion and control logic to regulate brushless servomotors in industrial assembly cells, packaging machinery, and related equipment. By embedding the current loop, velocity loop, and motion sequencing in one enclosure, the unit removes the need for an external drive rack and keeps the control system compact. It also accepts factory mains through its integral power supply, which helps reduce separate panel hardware and keeps installation layout straightforward.
During continuous operation the controller supplies up to 3.8 A of phase current, while short transients can be handled at 7.5 A without saturating the output devices. The internal rectifier accommodates either 120/240 VAC utility feeds, letting the same hardware operate on low- or high-voltage plant lines. To match commanded torque with analog reference signals, the current loop is factory scaled at 1.75 A/V, which supports consistent response to external command inputs. Because the drive supports 4-quadrant operation, braking energy during reversing motion is actively controlled rather than left to mechanical dissipation, and the operating mode can be set for torque or velocity control through software parameters.
Position and speed closure rely on resolver feedback, which the controller digitizes at 12-bit resolution; this level of detail contributes to accurate motor-shaft position tracking during closed-loop operation. For systems that require quadrature pulse trains, the built-in encoder emulator outputs 1024 PPR, allowing the controller to interface with host equipment that expects incremental-style feedback signals. Application flexibility is enhanced by an analog or digital personality module that plugs into the front panel, so the control interface can be matched to standalone operation or networked torque and velocity regulation without external signal conditioning. This arrangement lets the controller adapt to different machine control schemes while keeping the main hardware unchanged.
Frequently Asked Questions about SC322A-001:
Q: What is the continuous current rating of the SC322A-001 controller?
A: The SC322A-001 features a continuous current rating of 3.8 A, supporting sustained performance during demanding operations.
Q: What control modes are available on the SC322A-001?
A: This model supports both torque and velocity control modes, allowing for flexible motion management.
Q: What input voltage range does the SC322A-001 require?
A: The SC322A-001 controller operates on either 120 or 240 VAC input voltage, offering compatibility with standard power supplies.
Q: What type of primary feedback does the SC322A-001 controller use?
A: Primary feedback for the SC322A-001 is provided by a resolver, enabling precise position detection.
Q: What encoder emulation capability is provided by the SC322A-001?
A: This controller emulates encoders at 1024 pulses per revolution, facilitating integration with systems requiring encoder feedback.
