Product Description:

The SC102-001-T1 belongs to the SC100 Brushless Servo Controllers series produced by Pacific Scientific. It is a brushless servo controller intended to regulate permanent-magnet servo motors on conveyors, indexing tables, and other industrial axes that require controlled motion. The unit processes analog command signals, reads resolver feedback, and converts incoming power into controlled motor current for closed-loop motor control. This operating method supports stable response during changes in load, speed, and commanded direction.

The controller derives a nominal bus of 320 VDC from a three-phase 230 VAC (+10%, −15%) supply operating at 47–63 Hz. Input phase rotation is not critical, but the incoming supply must remain balanced across all three phases for normal operation. The command section presents a 10 kΩ input impedance, and the velocity loop accepts either 4–20 mA or ±10 V differential references. Velocity and torque are the selectable control modes, and resolver signals are decoded by a dedicated Tachsyn processor. Continuous operation is rated at 12 A output current and 3.6 kW of stall power. During steady regeneration, the shunt regulator dissipates 30 W, total heat loss at full load is 90 W, and overall conversion efficiency remains above 95% while the standard layout supports ambient temperatures from 0 °C to 50 °C.

For short-duration overload conditions, the controller can deliver a peak output of 15 A for up to five seconds and supply 4.5 kW to the motor. The inverter section uses pulse-width modulation at 5 kHz, and the speed feedback signal is scaled at 0.5 V/Krpm on both tachometer output pins. The controller is rated for service at altitudes up to 1500 m without thermal derating. When the unit is not operating, it can be stored between −55 °C and 70 °C. Its shunt network absorbs regenerative energy during rapid deceleration, which supports controlled braking when the motor returns energy to the DC bus.