SC105-001-M Pacific Scientific
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The Pacific Scientific SC105-001-M is a brushless servo controller from the SC100 Brushless Servo Controllers series. This controller operates at a nominal bus voltage of 320 VDC and provides a continuous output current of 40 Amps with a stall output power of 9 kW. It supports 230 VAC input voltage across 3 phases and functions efficiently over a temperature range from 0°C to 50°C.
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Product Description:
The SC105-001-M is a brushless servo controller produced by Pacific Scientific for the SC100 Brushless Servo Controllers series. As a standard controller, it supplies regulated DC power and modulation algorithms to manage torque, velocity, and position in industrial automation axes that use permanent-magnet servomotors. Its role is to interface three-phase mains with the motor, monitor feedback, and coordinate dynamic braking through an internal shunt regulator so that motion profiles remain accurate under varying mechanical loads.
The power stage is supported by a nominal bus of 320 VDC, allowing energy storage on the DC link for fast current transients. Continuous stall capability reaches 40 A, so the drive can hold high torque without thermal derating, while continuous output is limited to 9 kW. A shunt element dissipates 60 W during steady regeneration to protect the link capacitors. Conversion efficiency exceeds 95%, reducing cabinet heat and lowering required airflow. Command pulses are processed at a switching frequency of 5 kHz, which minimizes ripple in motor current and improves servo stiffness for mid-band response.
During accelerations, the inverter can deliver a peak of 60 A for five seconds, translating to short-term mechanical bursts of 17 kW. Regenerative surges up to 15 kW for 300 ms are routed into the shunt, preventing overvoltage. The input side accepts three-phase power at 230 VAC (+10%, -15%) and line frequencies between 47 and 63 Hz, with 205 W of internal dissipation at full electrical load. Full ratings are maintained from 0°C to 50°C; outside that range, the unit must be derated, though storage is permissible between -55 °C and 70 °C. Three-phase symmetry keeps the front-end rectifier balanced, and the 5 kHz carrier keeps audible noise low in acoustic-sensitive installations.
Frequently Asked Questions about SC105-001-M:
Q: What is the nominal bus voltage for the SC105-001-M controller?
A: The SC105-001-M has a nominal bus voltage rating of 320 VDC for its internal power circuit.
Q: What is the continuous output current of the SC105-001-M servo controller?
A: This controller provides a continuous output current (stall) of 40 A to the connected motor.
Q: What are the input voltage and phase requirements for the SC105-001-M?
A: It supports a 230 VAC input across three phases, accommodating +10% to -15% voltage variation.
Q: What is the operational efficiency of the SC105-001-M controller?
A: The SC105-001-M achieves an efficiency greater than 95%, ensuring minimal energy loss during operation.
Q: What is the peak output power capability of the SC105-001-M for short durations?
A: During a 5-second interval, the SC105-001-M can provide a peak output power of up to 17 kW.
