SC104-001-T4 Pacific Scientific
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The SC104-001-T4 is a brushless servo controller manufactured by Pacific Scientific as part of the SC100 Brushless Servo Controllers series. It provides a continuous output power of 6 kW at a nominal bus voltage of 320 VDC and an efficiency greater than 95 percent. The controller operates at an input voltage of 230 VAC across three phases and features a Tachsyn Processor interface type.
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Product Description:
The SC104-001-T4 is a brushless servo controller manufactured by Pacific Scientific as part of the SC100 Brushless Servo Controllers series. It converts three-phase mains power into a controlled DC bus and a pulse-width-modulated output, allowing permanent-magnet servomotors to track commanded torque, speed, or position in industrial automation cells. This control method supports stable motor response during positioning moves, speed regulation, and torque changes in automated equipment. Its Tachsyn Processor interface conditions resolver signals so the control loop can monitor motor velocity during operation.
The controller derives its internal power from a three-phase input of 230 VAC (+10 %/-15 %) at 47–63 Hz and rectifies it to a nominal bus of 320 VDC. Under continuous stall duty, it can sustain 20 A of output current and deliver up to 6 kW to the motor while keeping the semiconductors within their thermal limits. Efficiency exceeds 95%, so only about 130 W is dissipated as heat at full load, and that heat is removed by natural convection through the aluminum chassis. A 30 W shunt regulator handles regenerated energy during overhauling loads. The controller supports continuous operation from 0 °C to 50 °C, and a 5 kHz switching frequency balances acoustic noise with current ripple. This arrangement gives the power stage a stable source for pulse-width modulation during continuous-duty operation.
For rapid accelerations, the output stage supplies up to 60 A for 5 s, which yields a mechanical peak of 17 kW. Excess kinetic energy is clipped by the shunt network, which can absorb 15 kW for 300 ms. The short-term current reserve is intended for brief acceleration demands rather than continuous stall loading. Velocity feedback uses a tachometer gradient of 4.0 V/Krpm, and the unit tolerates storage temperatures from -55 °C to 70 °C when idle.
Frequently Asked Questions about SC104-001-T4:
Q: What is the nominal bus voltage for the Pacific Scientific SC104-001-T4 servo controller?
A: The SC104-001-T4 supports a nominal bus voltage of 320 VDC for its internal power stage.
Q: What is the continuous output current rating for the SC104-001-T4 at stall?
A: This controller can deliver a continuous output current of 20 A at stall conditions.
Q: Which interface type is integrated into the SC104-001-T4 servo controller?
A: The SC104-001-T4 utilizes a Tachsyn Processor as its interface type.
Q: What input voltage and phase configuration does the SC104-001-T4 require?
A: It accepts a three-phase input voltage of 230 VAC with a tolerance of +10% and -15%.
Q: What efficiency rating does the Pacific Scientific SC104-001-T4 achieve?
A: The efficiency of the SC104-001-T4 servo controller is greater than 95%.
