SC725A-001-PM72016 Pacific Scientific
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The Pacific Scientific SC725A-001-PM72016 is a servo controller from the SC720 Command Controllers series. It delivers a continuous output current of 30 Amps, configurable up to 40 Amps, and provides a continuous rated torque of 47.5 Newton-meters. Designed for a bus input voltage of 240 Vac, this unit supports output power of up to 9 kW continuously and 18 kW at peak, and features an encoder resolution of 1024 pulses per revolution.
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Product Description:
The SC725A-001-PM72016 is a servo controller manufactured by Pacific Scientific within the SC720 Command Controllers series. Classified as a servo controller, it provides closed-loop torque and velocity regulation for brushless machine axes used in industrial robots, pick-and-place gantries, and synchronized conveyor sections. Its control core uses a torque and velocity algorithm, so the unit can translate analog motion commands into precise motor currents while coordinating feedback from resolvers or encoders.
The controller draws a three-phase input of 240 Vac, which the internal rectifier converts to a regulated DC bus of 320 Vdc. From that bus, it delivers a continuous phase current of 30 A, which can be increased through parameter settings to 40 A, to support a continuous rated torque of 47.5 Nm on the connected motor. Under these conditions, the drive can supply 9 kW of mechanical output while its shunt dissipater handles 200 W of regenerative energy. A 1024 ppr incremental encoder input and a 12-bit RDC channel work with encoder and resolver feedback to maintain an accuracy of ±22 arcmin at the rated speed of 1200 rpm. The analog velocity input accepts ±10 V so that external motion controllers can modulate speed without additional interface hardware.
During acceleration or rapid load changes, the amplifier can source a peak current of 60 A, allowing the motor to reach a peak torque of 89.6 Nm. In this transient mode, the power stage delivers 18 kW of shaft power, and the dynamic shunt absorbs up to 20 kW to protect the DC link. A carrier frequency of 20 kHz minimizes ripple and audible noise, supporting smooth motion profiles that match the unit’s specified accuracy. All of these capabilities are packaged in a chassis that weighs 40 lbs, making the 720 Series controller suitable for panel mounting in multi-axis automation cells where space and thermal budgets are constrained.
Frequently Asked Questions about SC725A-001-PM72016:
Q: What is the positional accuracy of the SC725A-001-PM72016 controller?
A: The SC725A-001-PM72016 has an accuracy of ±22 arcmin for precise motion control.
Q: What bus input voltage does the SC725A-001-PM72016 require?
A: This controller supports a bus input voltage of 240 Vac for its operation.
Q: What continuous output current is supported by the SC725A-001-PM72016?
A: The continuous output current for this model is 30 A, configurable up to 40 A if needed.
Q: What is the encoder resolution available on the SC725A-001-PM72016?
A: The SC725A-001-PM72016 offers an encoder resolution of 1024 pulses per revolution.
Q: What is the rated speed of the SC725A-001-PM72016 controller?
A: Rated speed for this product is set at 1200 rpm for stable and reliable performance.
