SD902NN-001-01 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific SD902NN-001-01 is a standard unit servo drive from the SC900 Servo Drives series. It delivers a continuous output current of 3.75 A with a peak output current of 7.5 A and achieves a power stage efficiency of 95%. The unit is convection cooled without a fan and supports analog or incremental digital command interfaces.
Internal Product Review
The SD902NN-001-01 is a Pacific Scientific SC900 servo drive with an analog or incremental digital command interface and fanless convection cooling. This standard unit delivers 3.75 A continuous output current and 7.5 A peak current, supporting stable servo response in demanding motion applications. With 95% power stage efficiency, this drive stands out as an efficient and well-engineered servo control solution.
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Product Description:
The SD902NN-001-01 is a servo drive manufactured by Pacific Scientific for the SC900 Servo Drives series. It converts a three-phase 240 V AC supply into regulated motor current for brushless servo axes used in pick-and-place stations, indexing tables, and light material-handling equipment. The drive supports closed-loop velocity and position control by responding to external commands and regulating current through its inverter stage. Its standard SC900 housing and connector arrangement allow it to fit control panels designed for other units with the same mechanical format.
The command stage accepts analog or incremental digital reference signals through hard-wired control connections, and the unit does not include a separate fieldbus channel. At a cabinet air temperature of 25 °C, the power section supplies a continuous output current of 3.75 A. This current supports a continuous mechanical output of 1.1 kW under the stated input conditions. The power stage operates at an efficiency of 95%, reducing the amount of electrical energy released as heat inside the panel. Thermal management relies on a fanless, convection-cooled design, which removes heat without drawing dust-laden air through the electronic components or requiring auxiliary blower hardware.
During rapid acceleration, the inverter can supply a peak current of 7.5 A for short operating intervals. This temporary current capacity permits a peak mechanical output of up to 2.2 kW when the connected motor and operating conditions are suitable. Compatible motors must have an inductance within the 4.0 mH to 4 H range so the current regulators can remain stable throughout the operating speed range. Application logic and drive adjustments are handled through the included Base Servo Software, which provides access to the available tuning and diagnostic functions. The drive uses direct command wiring for installations that rely on analog control loops or incremental digital pulse commands rather than network-based motion control.
