Product Description:

The SC403044T3 servo drive is produced by Pacific Scientific within the SC400 Servo Drives series. It is designed to supply controlled power to brushless servomotors in automated machinery, matching commanded torque and velocity with the feedback devices connected to the axis. By converting incoming AC power to a regulated DC bus and high-frequency PWM output, the unit serves as the interface between facility power and precision motion components. It can coordinate with feedback-equipped axes where steady speed regulation and responsive torque control are required through repeated duty cycles.

Electrical compatibility covers single- or three-phase mains at 115/230 VAC. The internal rectifier stores energy on DC buses of 160 VDC during 115 V operation and 320 VDC during 230 V operation. The power stage can deliver 7.5 A of continuous armature current and withstand transients up to 15 A for short accelerations. A carrier frequency of 15 kHz helps reduce motor acoustic noise while keeping current ripple within servo loop limits. The drive also supports hardware tachsyn feedback with a 2.0 V/Krpm gradient, and fault signaling is available through a 30 VDC open-collector output that can sink 25 mA for interlocking contactors or PLC inputs. This combination supports stable operation across low-speed moves and faster traverses without external signal conditioning for the tachsyn channel.

The continuous power capability spans 800 W on a 115 V single-phase source and rises to 2250 W when the drive is connected to a 230 V three-phase feeder. During rapid indexing, the inverter can furnish peak shaft power of 4500 W, while the shunt can absorb 40 W continuously or bursts up to 6000 W to keep the DC bus within safe limits. Mechanical packaging is narrow, occupying only 4.5 inches of panel width, so multiple axes can fit in a standard enclosure without wasting cabinet space. The compact format suits pick-and-place stations, indexing tables, and test stands that require dense axis layouts and controlled dissipation of regenerated energy. The narrow panel footprint also leaves room for adjacent control hardware in compact cabinets.