SC723A-001-PM72032 Pacific Scientific
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The Pacific Scientific SC723A-001-PM72032 is a servo controller from the SC720 Command Controllers series with a torque and velocity control type and an encoder emulator for resolver feedback. It offers continuous output power of 2.2 kW at 240 Vac 3-phase, peak output current of 15 Amps, and weighs 16 pounds. The controller features a 1024 ppr encoder resolution, a ±22 arcminute accuracy, and a velocity input of ±10 Volts.
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Product Description:
The SC723A-001-PM72032 is a servo controller manufactured by Pacific Scientific for the SC720 Command Controllers series. Classified as a torque and velocity controller, it regulates motor speed or torque in response to commands from an automation system. The unit fits between a motion processor and a three-phase servomotor, converting low-level command signals into controlled drive power for packaging equipment, material handling systems, and light machining axes. Its control role allows the higher-level system to issue motion commands while the controller manages current delivery to the motor.
The power section uses a three-phase 240 VAC supply that is rectified to an internal bus voltage of 320 Vdc and can deliver up to 9 Arms of bus current. Continuous motor output is rated at 7.5 A, which corresponds to 2.2 kW of mechanical output when operated from a 240 VAC supply. Short bursts may reach 15 A for transient demand during acceleration or other brief load changes. A 40 W shunt regulator dissipates excess energy during deceleration, and a 6 kW peak shunt rating supports rapid stops. Operation from a 120 VAC line is also possible, and the controller uses a 20 kHz ripple frequency to keep current ripple above the audible range.
For motion feedback, the drive can accept direct encoder input at 1024 ppr, and a monitor output scales phase current at 0.32 V/A for diagnostic use. When position loops are handled externally, the resolver interface provides 12-bit RDC resolution for precise digital conversion of resolver data, and the logic accepts a velocity command of ±10 V. Peak mechanical power reaches 4.5 kW to support rapid acceleration, and the assembled chassis weighs 16 lb for panel mounting. With the resolver-based encoder emulator, motion feedback accuracy is rated at ±22 arcmin. This arrangement supports stable feedback handling in systems that use either resolver-based emulation or direct feedback wiring.
Frequently Asked Questions about SC723A-001-PM72032:
Q: What is the continuous output current rating of the SC723A-001-PM72032 controller?
A: The SC723A-001-PM72032 controller has a continuous output current of 7.5 A, supporting demanding servo applications.
Q: What is the encoder resolution of the SC723A-001-PM72032 from Pacific Scientific?
A: This controller offers an encoder resolution of 1024 pulses per revolution for precise motion control.
Q: What is the peak output power capability of the SC723A-001-PM72032 controller?
A: The peak output power of the SC723A-001-PM72032 at 240 Vac, 3-phase is 4.5 kW.
Q: What is the velocity input range supported by the SC723A-001-PM72032?
A: The input velocity range accepted by this controller is ±10 V, enabling flexible speed control integration.
Q: What type of feedback emulation does the SC723A-001-PM72032 support?
A: This model uses an encoder emulator (resolver) for feedback emulation, ensuring accurate feedback for motion control tasks.
