SC103-001-M Pacific Scientific
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The Pacific Scientific SC103-001-M is a standard controller from the SC100 Brushless Servo Controllers series. It delivers a nominal bus voltage of 320 VDC and a continuous output current of 15 Amps at 4.5 kW power. The controller operates at an efficiency greater than 95% with a peak output current of 30 Amps for 5 seconds and supports input voltages of 230 VAC at 47-63 Hz across three phases.
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Product Description:
The SC103-001-M brushless servo controller is produced by Pacific Scientific as part of the SC100 Brushless Servo Controllers series. It governs three-phase permanent-magnet motors in automated machinery by converting fixed mains power into variable voltage and frequency drive signals, enabling closed-loop speed and torque regulation. A built-in shunt regulator absorbs excess bus energy generated during regenerative braking events. This arrangement helps the controller remain stable during repeated acceleration and deceleration cycles.
The internal DC bus operates at 320 VDC, providing an energy reservoir for the inverter stage that modulates phase currents. Under continuous stall conditions, the drive can supply 15 A, translating to 4.5 kW of mechanical output at the motor shaft. The cooling system removes 105 W of dissipation, and the power devices switch at 5 kHz to keep current ripple low. Overall efficiency is > 95%, so most input energy reaches the load. The mains connection is three-phase 230 VAC with an allowable variation of +10% and -15%, and the controller synchronizes with supply frequencies between 47–63 Hz. A continuous shunt regulator capability of 30 W trims the DC bus during light regenerative events.
Short-term events are handled within the peak envelope of the drive. It can deliver 30 A of phase current for up to five seconds, providing added torque during machine start-up and other brief overload conditions. During the same interval, mechanical output can reach 9 kW. Excess regenerative energy is routed to the internal resistor, where the shunt stage can dissipate 8 kW for 300 ms to prevent DC bus overvoltage. Full continuous ratings remain available between 0 °C to 50 °C, so no derating is required in typical shop environments. Outside operation, the electronics tolerate storage temperatures from -55 °C to 70 °C, and the unit ships as a standard controller for general SC100 system use.
Frequently Asked Questions about SC103-001-M:
Q: What is the nominal bus voltage required for the SC103-001-M servo controller?
A: The SC103-001-M operates with a nominal bus voltage of 320 VDC.
Q: What is the continuous output current capability of the SC103-001-M?
A: This controller provides a continuous output current of 15 A at stall conditions.
Q: How much continuous output power can the SC103-001-M deliver?
A: The SC103-001-M is rated for continuous output power of 4.5 kW.
Q: What is the efficiency rating for the SC103-001-M brushless servo controller?
A: The SC103-001-M has an efficiency greater than 95%, maximizing energy use.
Q: What are the input voltage and frequency requirements for the SC103-001-M controller?
A: The SC103-001-M accepts a 3-phase input at 230 VAC with a frequency range from 47 to 63 Hz.
