Product Description:

The SC453-004-05 belongs to the SC450 Brushless Servo Controllers series manufactured by Pacific Scientific. It is a programmable digital position controller that combines power electronics and motion firmware to drive a resolver-equipped brushless motor in automated machinery. Within an automation cell, the unit receives high-level move commands, closes the position loop internally, and sends three-phase currents to the motor, eliminating the need for a separate amplifier and PLC axis card.

The controller can supply a continuous output of 7.5 A from either a 115 VAC or 230 VAC input, giving the same thermal rating across common plant voltages. For transient moves it delivers up to 15.0 A, and that current, when the bus is at 230 VAC, supports an instantaneous mechanical output near 4500 W. The drive section chops the DC link at 15 kHz, so current ripple stays outside the motor’s mechanical bandwidth. Position loop data are processed at a fixed resolution of 4096 steps per rev, and the closed-loop holds commanded positions within 15 arcmin under nominal load. Resolver feedback provides absolute shaft angle for each update cycle, and the PacSci ServoBASIC interpreter allows users to embed point-to-point or camming routines directly in the controller memory.

Because the internal counter spans 0 to +100,000,000 steps, long linear axes can be homed once and then run for extended periods without overflow. The electronics remain within specification from 0 to 50 °C, and components are protected during downtime by a storage range of -55 to 70 °C. A housing mass of 5.0 kg keeps panel mounting manageable while still providing enough aluminum surface area for conduction cooling. This operating range suits indexing tables, feeders, and medium-power actuators that run repeated start-stop cycles in standard industrial environments.