SC105-010-T4 Pacific Scientific
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The Pacific Scientific SC105-010-T4 is a brushless servo controller from the SC100 Brushless Servo Controllers series. It operates with a nominal bus voltage of 320 VDC and provides a continuous output current of 40 Amps with a continuous output power of 9 kW. The controller supports three-phase 230 VAC input and features a Tachsyn Processor interface type.
Internal Product Review
The SC105-010-T4 is a Pacific Scientific brushless servo controller with 9 kW continuous output power and 40 A continuous output current. Greater than 95% efficiency and 17 kW peak output power support impressive dynamic performance in demanding motion applications. A 320 VDC nominal bus voltage makes this controller a strong choice for high-performance servo systems.
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Product Description:
The SC105-010-T4 servo drive is produced by Pacific Scientific and belongs to the SC100 Brushless Servo Controllers series. This brushless servo controller conditions three-phase mains power and supplies regulated DC to matched permanent-magnet motors used in indexing tables, gantry axes, and other closed-loop motion tasks inside automated equipment. Within an automation cell it interfaces with external position feedback and executes torque or velocity loops so the host PLC can command precise acceleration profiles without direct motor management.
It rectifies a three-phase supply of 230 VAC (+10%, -15%) at 47–63 Hz and stores energy on a DC bus held at 320 VDC. Under continuous stall conditions the power section can deliver 40 A of current and 9 kW of mechanical output to the motor. Converter efficiency exceeds > 95%, so internal heating is limited to 205 W at full load. An onboard shunt dissipates 60 W continuously to clamp regenerated energy, and the switching bridge uses a Tachsyn processor interface for resolver feedback. Full current and thermal ratings remain available from 0 °C to 50 °C when the enclosure is ventilated properly.
During rapid accelerations the controller allows 60 A for up to five seconds, raising shaft power to 17 kW. A dynamic shunt network can absorb 15 kW for 300 ms to protect the DC link from overvoltage. Pulse-width modulation is applied at 5 kHz, reducing current ripple and audible noise in the motor windings. Long-term storage is permissible between −55 °C and 70 °C, and the 4.0 V/Krpm tachometer gradient provides predictable scaling for speed command circuits. These transient, thermal, and feedback capabilities let the SC105-010-T4 integrate into high-inertia axes without exceeding its 205 W internal dissipation budget or the 60 W continuous shunt rating.
