SC904AN-001-01 Pacific Scientific
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The SC904AN-001-01 servo drive by Pacific Scientific is part of the SC900 Servo Drives series. It offers a continuous output current of 15 Amps and a continuous output power of 4.5 kW with convection cooling. The drive features both analog and incremental digital command interfaces and achieves a power stage efficiency of 97 percent.
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Product Description:
The SC904AN-001-01 is a servo drive module produced by Pacific Scientific and assigned to the SC900 Servo Drives series. Designed for closed-loop motion control in industrial automation, the unit processes feedback from permanent-magnet servo motors and modulates three-phase power to regulate torque and velocity. It serves as an intermediary between a motion controller and the motor, converting low-level command signals into regulated armature current for precision positioning tasks. This operating role makes it suitable for axes that require repeatable response during indexing, speed regulation, and point-to-point movement.
At 25 °C with natural convection, the drive can deliver a continuous output current of 15.0 A, enabling steady operation of medium-frame motors without thermal derating. Under the same conditions and a 240 V three-phase supply, it sustains 4.5 kW of mechanical power at the motor shaft. The internal power stage has an efficiency of 97%, so most of the input energy is transferred to the load rather than dissipated as heat. Motor compatibility is limited to a maximum line-to-line inductance of 1 H and a minimum of 1.0 mH, which keeps current regulation within the intended operating range. These electrical limits help the amplifier maintain stable commutation and controlled current ripple during normal operation.
During acceleration or rapid indexing, the amplifier supplies a peak output current of 30.0 A, doubling the continuous rating for limited periods to overcome inertial loads. When operated at 240 VAC, this surge corresponds to a peak mechanical power capability of 9.0 kW. Motion commands enter through an analog or incremental digital interface, so the unit can accept conventional reference signaling without relying on a networked fieldbus connection. Thermal management relies on convection cooling without a fan, making the drive suitable for clean environments where forced airflow is undesirable. The absence of a fan also reduces the number of moving parts inside the enclosure and supports quiet operation in cabinet installations.
Frequently Asked Questions about SC904AN-001-01:
Q: What type of command interface does the SC904AN-001-01 servo drive use?
A: The SC904AN-001-01 supports both analog and incremental digital command interfaces for flexible integration.
Q: How is the SC904AN-001-01 servo drive cooled?
A: This servo drive operates with convection cooling and does not include a fan.
Q: What is the continuous output power rating for the SC904AN-001-01?
A: The continuous output power at 240V three-phase and 25°C convection is 4.5 kW.
Q: What is the power stage efficiency of the SC904AN-001-01?
A: The SC904AN-001-01 achieves a power stage efficiency of 97%.
Q: What is the peak output current capability of the SC904AN-001-01?
A: The peak output current for this model is 30.0 A.
