SC904-001-01 Pacific Scientific
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The Pacific Scientific SC904-001-01 is a servo drive from the SC900 Servo Drives series. It features a continuous output current of 15.0 Amps and peak output current of 30.0 Amps. The drive delivers continuous output power up to 4.5 kW at 240V 3-phase with a power stage efficiency of 97%.
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Product Description:
The SC904-001-01 is a servo drive manufactured by Pacific Scientific and supplied within the SC900 Servo Drives series. In an automation cell, it serves as the power and control stage between a motion controller and a brushless servo motor, delivering regulated current and voltage so the motor can follow commanded torque, velocity, or position profiles. This arrangement supports precise axis control in standalone motion systems that use direct command wiring instead of a networked interface.
The drive accepts motion commands through an analog or incremental digital interface, allowing it to track ±10 V speed loops or step-and-direction pulse trains without additional protocol hardware. Under natural convection at 25 °C, the power section can supply a continuous phase current of 15.0 A; this rating sets the steady-state torque capability available to the load. At the same ambient condition and with a three-phase 240 V source, the unit produces 4.5 kW of continuous mechanical power, indicating how much work it can deliver without thermal derating. Short-duration dynamics are handled by a peak output current of 30.0 A, which permits rapid acceleration bursts or disturbance rejection. Conversion losses are limited because the power stage operates with an efficiency of 97%, reducing cabinet heat.
Additional limits frame the operating envelope. During transient events, the inverter can source up to 9.0 kW of power at a DC bus derived from 240 VAC, providing headroom for inertia-dominated moves. Motor selection must observe the maximum line-to-line inductance of 1 H so the current regulator remains stable, while the minimum inductance of 1.0 mH prevents excessive ripple that could overheat the windings. Because the drive has no onboard fieldbus, tuning and diagnostics are handled locally through the command and setup connections, keeping the installation focused on point-to-point motion tasks.
Frequently Asked Questions about SC904-001-01:
Q: What types of command interfaces are supported by the SC904-001-01 servo drive?
A: The SC904-001-01 supports both analog and incremental digital command interfaces for flexible system integration.
Q: What is the continuous output current rating for the SC904-001-01?
A: This servo drive provides a continuous output current of 15.0 A at 25°C with convection cooling.
Q: What is the peak output power of the SC904-001-01 at 240 VAC?
A: The SC904-001-01 delivers a peak output power of 9.0 kW when operating at 240 VAC.
Q: What is the power stage efficiency of the SC904-001-01 servo drive?
A: With 97% efficiency in its power stage, the SC904-001-01 offers highly efficient energy conversion.
Q: What range of motor inductance is supported by the SC904-001-01?
A: This model accommodates motor inductances as low as 1.0 mH and as high as 1 H between line-to-line connections.