SC105-001-T4 Pacific Scientific
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The Pacific Scientific SC105-001-T4 is a brushless servo controller from the SC100 Brushless Servo Controllers series. It operates at a nominal bus voltage of 320 VDC with a continuous output current of 40 Amps and output power of 9 kW. The controller features a Tachsyn Processor interface and supports three-phase 230 VAC input within a 47-63 Hz frequency range.
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Product Description:
The SC105-001-T4 is a three-phase brushless servo controller built by Pacific Scientific and supplied as part of the SC100 Brushless Servo Controllers series. In an industrial automation cell, this controller sits between the mains supply and a brushless motor, shaping power and regulating current so the axis follows programmed speed or torque commands. Its Tachsyn interface processes resolver-style feedback, allowing the drive to track rotor position accurately and deliver closed-loop motion for conveyors, form-fill-seal equipment, or multi-axis gantries.
The power section is centered on a bus rated at 320 VDC, which stores rectified energy for the IGBT bridge. Line connection is through a three-phase input that can vary around 230 VAC (+10%, -15%), making it suitable for 200 to 240 V plants running at 47 to 63 Hz. At stall, the amplifier can deliver a continuous armature current of 40 A, translating to a sustained mechanical output of 9 kW when paired with an appropriately sized motor. Conversion losses remain low because the unit operates at an efficiency of greater than 95%, and the residual heat of about 205 W at full load is managed by the integral heat sink and forced-air path. A shunt regulator rated at 60 W bleeds excess bus energy during overhauling moves.
For transient demands such as rapid acceleration, the controller supplies a peak armature current of 60 A for five seconds, letting the motor produce up to 17 kW of mechanical power. During shorter regenerative surges, the shunt circuit can absorb 15 kW for 300 ms to keep the bus within safe limits. Pulse-width modulation is executed at a switching frequency of 5 kHz, which balances acoustic noise with semiconductor losses while maintaining smooth torque. Full-rated operation is available from 0 °C to 50 °C, and derating is required above that range. Outside production hours, the unit remains stable across a storage window from -55 °C to 70 °C, and its tachometer gradient of 4 V per krpm matches standard Pacific Scientific motor resolvers.
Frequently Asked Questions about SC105-001-T4:
Q: What is the nominal bus voltage requirement for the SC105-001-T4 controller?
A: The SC105-001-T4 operates with a nominal bus voltage of 320 VDC.
Q: What is the peak output current capability of the SC105-001-T4?
A: This controller can deliver a peak output current of 60 A for up to 5 seconds.
Q: What are the input voltage and phase requirements for the SC105-001-T4?
A: The SC105-001-T4 is designed for three-phase input at 230 VAC with a tolerance of +10% to -15%.
Q: How efficient is the SC105-001-T4 controller during standard use?
A: The SC105-001-T4 keeps efficiency above 95% during continuous operation.
Q: What type of interface is provided on the SC105-001-T4 controller?
A: This model uses a Tachsyn Processor as its interface type.
