SC105-001 Pacific Scientific
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The Pacific Scientific SC105-001 brushless servo controller is part of the SC100 Brushless Servo Controllers series and operates at a nominal bus voltage of 320 VDC. It provides a continuous output current of 40 Amps and a continuous output power of 9 kW, with an efficiency of greater than 95 percent. The controller is compatible with three-phase 230 VAC input and supports an input frequency of 47 to 63 Hz.
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Product Description:
The SC105-001 is a brushless servo controller manufactured by Pacific Scientific for the SC100 Brushless Servo Controllers series. It converts three-phase mains into a regulated DC bus so connected servomotors can be driven with precise torque and speed commands in automated pick-and-place units, labelers, and similar motion axes. A dedicated shunt regulator inside the housing dissipates regenerated energy during rapid deceleration, making the controller a compact power interface between the plant’s AC supply and the machine’s permanent-magnet motor coils. This arrangement supports stable motor control during repeated starts, stops, and direction changes.
The power section is built around a nominal bus of 320 VDC; this voltage stores energy in the internal capacitors and sets the headroom for motor back EMF. Line supply tolerance is handled by an input of 230 VAC (+10%, -15%) at 47–63 Hz over three phases, a range that permits operation on most industrial distribution panels. At stall, the drive can deliver 40 A continuously, translating to 9 kW of mechanical output when paired with a matched motor. Conversion losses are low, with an efficiency of > 95%, so less heat must be removed by cabinet ventilation. A continuous shunt duty of 60 W protects the DC link during steady overhauling loads, while 205 W of internal dissipation at full load must be considered when sizing panel cooling. These operating characteristics suit applications that cycle frequently and require repeatable speed regulation.
For brief overloads, the current can rise to 60 A and output power to 17 kW for five seconds, allowing high-inertia loads to accelerate without oversizing the controller. The shunt network also absorbs peaks of 15 kW for 300 ms, preventing DC bus overvoltage when a motor is abruptly stopped. Switching devices are gated at 5 kHz, a frequency that balances low acoustic noise with acceptable filter size. Full ratings apply from 0 °C to 50 °C, and storage is permitted between -55 °C and 70 °C. The unit ships as a standard controller with no factory customization, making it suitable for general motion-control installations that use the standard product configuration.
Frequently Asked Questions about SC105-001:
Q: What is the nominal bus voltage for the SC105-001 servo controller?
A: The SC105-001 operates at a nominal bus voltage of 320 VDC, ensuring compatibility with high-voltage control systems.
Q: What is the continuous output current capability of the SC105-001 controller?
A: This servo controller can deliver a continuous output current of 40 A at stall conditions.
Q: What is the peak output current of the SC105-001 during short bursts?
A: Peak output current for the SC105-001 reaches 60 A for up to 5 seconds, making it suitable for brief high-demand applications.
Q: What are the input voltage and phase requirements for the SC105-001?
A: The SC105-001 requires a 3-phase 230 VAC power supply and handles input frequencies from 47 to 63 Hz.
Q: How efficient is the SC105-001 servo controller during operation?
A: With an efficiency greater than 95%, the SC105-001 minimizes energy loss during operation.
