SC933-NN-001-01 Pacific Scientific
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The Pacific Scientific SC933-NN-001-01 servo drive is part of the SC900 Servo Drives series. It offers a continuous output current of 7.5 Amps and a continuous output power of 2.2 kilowatts. The drive uses RS-232/485 serial communications and supports analog, incremental digital, or serial command interfaces.
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Product Description:
The SC933-NN-001-01 is a servo amplifier produced by Pacific Scientific for the SC900 Servo Drives series. Within an automation cell, it converts three-phase line power into controlled armature current for brushless or brushed servomotors, allowing torque, velocity, or position loops to be closed by the machine controller. Its control role is to translate command input into regulated motor current so the connected axis follows programmed motion profiles with consistent response. The unit is intended for cabinet mounting and works with motion controllers that issue analog, incremental digital, or serial commands.
The drive exchanges parameters and diagnostic data through a RS-232/485 serial port, while the command interface accepts analog, incremental digital, or serial reference signals. Under natural convection at 25 °C, the power section can deliver a continuous armature current of 7.5 A, which corresponds to a steady mechanical output of 2.2 kW when supplied from a 240 V three-phase bus. Power conversion losses are low, as indicated by a power-stage efficiency of 96%, so most of the input energy reaches the motor instead of being dissipated as heat inside the drive. For startup or short acceleration bursts, the current limit rises to 15.0 A, providing additional torque during transient demand without changing the basic operating method of the controller. That communication path also supports routine status exchange during operation.
The housing is convection cooled, so installation must allow unobstructed vertical airflow and does not require forced-air hardware. With a 240 VAC source, the drive can furnish up to 4.5 kW of peak mechanical power during transient events, which is useful when a motion profile calls for short bursts of higher output. Motor inductance compatibility ranges from a line-to-line maximum of 2 H down to a minimum of 2.0 mH, allowing the chassis to operate with both low-inductance and higher-inductance servomotors. This wide inductance range helps the drive work with different motor types while keeping current behavior under control.
Frequently Asked Questions about SC933-NN-001-01:
Q: What command interface options are available on the SC933-NN-001-01 servo drive?
A: The SC933-NN-001-01 supports command inputs via analog, incremental digital, or serial command interfaces.
Q: What type of communications does the SC933-NN-001-01 support?
A: This model is equipped with RS-232/485 serial communication capabilities.
Q: How is the SC933-NN-001-01 servo drive cooled?
A: The SC933-NN-001-01 is convection cooled and does not use a fan.
Q: What is the continuous output power of the SC933-NN-001-01 at 240V 3-phase?
A: It has a continuous output power rating of 2.2 kW when powered at 240V 3-phase.
Q: What is the peak output current of the SC933-NN-001-01?
A: This servo drive delivers a peak output current of 15.0 A.
