SC104-001 Pacific Scientific
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The Pacific Scientific SC104-001 is a brushless servo controller from the SC100 Brushless Servo Controllers series. It operates with a nominal bus voltage of 320 VDC, a continuous output current of 20 Amps, and a continuous output power of 6 kW. This standard controller has an efficiency of over 95 percent and supports three-phase input voltage of 230 VAC at a frequency range of 47 to 63 Hz.
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Product Description:
The SC104-001 is a brushless servo controller in Pacific Scientific’s SC100 Brushless Servo Controllers series. It serves as the interface between a CNC or PLC and a three-phase brushless servo motor, regulating current and voltage loops so that commanded torque and speed are met inside automated machinery. Pacific Scientific supplies this model as a standard controller for cabinet mounting in packaging lines, pick-and-place axes, and similar motion tasks that require fast electronic commutation and closed-loop feedback. Its control architecture supports smooth acceleration, stable speed regulation, and quick response to changing load conditions.
The controller draws power from a three-phase supply rated at 230 VAC (+10%, -15%) and operates over 47–63 Hz. Inside the power section, a rectifier and filter synthesize a nominal DC bus of 320 VDC that feeds the IGBT bridge. Under stall conditions, the amplifier delivers a continuous phase current of 20 A, translating to a shaft power of 6 kW with a matched motor. Full-load efficiency remains above 95%, helped by a 5 kHz switching speed that balances loss and ripple. During deceleration, the shunt regulator diverts 30 W to hold bus voltage, and excess heat is removed through the heat sink. The internal DC bus and switching stage support stable current delivery during continuous motor operation.
Short-term overload handling supports rapid acceleration moves. For up to five seconds, the inverter sources 60 A of phase current, enabling a burst output of 17 kW. Regenerative energy from abrupt stops is managed by the shunt network, which can absorb 15 kW for 300 ms before the drive commands a controlled slowdown. Even at 100% duty, the power electronics release only 130 W as heat, keeping cabinet temperatures within the specified ambient band of 0 °C to 50 °C. A storage range of −55 °C to 70 °C preserves component integrity during shipment and long outages.
Frequently Asked Questions about SC104-001:
Q: What input voltage range does the SC104-001 servo controller support?
A: The SC104-001 is rated for a nominal input voltage of 230 VAC with a tolerance of +10% and -15%.
Q: What is the continuous output current capability of the SC104-001?
A: This controller can deliver a continuous output current (stall) of up to 20 A.
Q: How many input phases does the SC104-001 require?
A: The SC104-001 supports a 3-phase input configuration for operation.
Q: What is the SC104-001's peak output power capability?
A: Peak output power for up to 5 seconds on this model is rated at 17 kW.
Q: What is the specified operating temperature range for the SC104-001?
A: The SC104-001 is designed for full-rated performance in ambient temperatures from 0°C to 50°C.
