SC725A001 Pacific Scientific
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The Pacific Scientific SC725A001 is part of the SC720 Command Controllers series and serves as a torque and velocity controller. It provides a continuous output current of 30 A, configurable to 40 A, and delivers continuous output power of 9 kW at 240 Vac 3-phase. The controller supports encoder resolution of 1024 ppr with resolver-based feedback emulation and weighs 40 pounds.
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Product Description:
The SC725A001 command controller is produced by Pacific Scientific and belongs to the SC720 Command Controllers series. As a servo controller, it provides closed-loop drive regulation so servomotors can deliver consistent torque or velocity in automated production cells, packaging machines, and material-handling axes. By coordinating current delivery, position feedback, and motion profiles, the unit serves as the primary interface between the higher-level PLC and the motor power stage. This arrangement allows the controller to manage motor response in real time while maintaining stable operation across changing load conditions.
The controller sources a continuous phase current of 30 A, which sustains rated motor torque during steady motion, and this threshold can be raised to 40 A through parameter selection when additional thermal capacity is available. During rapid acceleration, the drive supplies a peak current of 60 A, allowing short-term torque multiplication without clipping. When connected to a 240 VAC three-phase line, the power module converts the supply into inverter pulses that deliver 9 kW continuously and up to 18 kW for brief overload intervals. Despite this output range, the chassis weighs only 40 lbs, so it can be mounted in standard enclosures without reinforced bracketing.
Position regulation accuracy is ±22 arcmin, so command deviations stay within that mechanical window during closed-loop operation. For feedback, the built-in resolver-to-digital converter samples rotor angle at a resolution of 12-bit, and an encoder emulator issues quadrature signals at 1024 ppr so legacy motion cards can read incremental counts without extra transducers. Because the unit operates as a torque/velocity controller, it can switch between speed regulation and direct torque command for positioning and tension-control tasks. This operating mode is useful in applications that alternate between constant-speed running, controlled acceleration, and load-sensitive motion.
Frequently Asked Questions about SC725A001:
Q: What is the continuous output current capability of the SC725A001 controller?
A: The SC725A001 controller features a continuous output current of 30 A, and it can be configured to deliver up to 40 A.
Q: How much continuous output power does the SC725A001 support on a 240 Vac 3-phase supply?
A: This controller provides an output power of 9 kW continuously at 240 Vac 3-phase supply.
Q: What is the encoder resolution supported by the SC725A001 controller?
A: The SC725A001 supports an encoder resolution of 1024 pulses per revolution for precise motion feedback.
Q: What control type does the SC725A001 servo controller utilize?
A: It uses a torque/velocity control type for advanced servo motor management.
Q: What feedback emulation feature is available on the SC725A001 servo controller?
A: The controller can emulate feedback with an encoder emulator based on a resolver.
