SC402-037-T3

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The SC402-037-T3 brushless servo drive features a continuous output current of 3.50 amps, a peak output current of 7.0 amps, a nominal bus voltage of 160/320 VDC, and a natural convection cooling method. Part of the SC400 Servo Drives by Pacific Scientific, it is panel-mounted and compatible with PM brushless servo motors.

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Product Description:

The Pacific Scientific’s servo drive SC402-037-T3 is UL/cUL recognized for industrial applications and it meets NFPA 79 standard. It provides efficiency greater than 90% during operation and delivers 3.5 A of continuous and 7.0 A of peak output current. This motor gets cooled through natural convection and supports vertically mounting position using the provided keyhole slots.

The SC402-037-T3 drive supports DC bus voltage of 160 VDC at 115 VAC input and it reaches 320 VDC when supplied with 230 VAC input. Its PWM frequency is fixed at 20 kHz for smooth motor control and it provides both torque/velocity modes of operation. The drive is capable of four-quadrant operation for full motor control and it accepts ±10 V analog signals as command input. All control and feedback connections are available on front panel connectors, J1 is used for AC power input and J2 connects to the motor while J3 handles analog inputs and J4 is for I/O along with feedback. This SC402 drive includes LED indicators for power/fault status and it features a fault output of 30 VDC max along with 25 mA sink. Its adjustable parameters include gain, loop tuning, offset and peak current while its zero-speed bias trim helps reduce drift and stabilizes motion. This unit supports 3-phase brushless AC permanent magnet motors and its feedback system uses Tachsyn sensors with 2.0 V/1000 RPM. It supports custom compensation networks for motor tuning as well.

The SC402-037-T3 drive weighs around 6.2 pounds and needs installation in a protected electrical enclosure with a humidity range below 90%, non-moist. Its input voltage range is 115/230 V AC with 47 to 63 Hz frequency and it accepts single/three-phase supply with built-in fusing. Surge protection is provided through internal MOVs and this SC402 drive maintains self-magnetic isolation.

Compatible Motor
PM Brushless Servo Motor
Continuous Output Current
3.50 A
Control Modes
Torque and velocity modes
Control Signal
Analog Command Input
Cooling Method
Natural Convection
Efficiency
Greater than 90% during operation
Input Voltage
115/230 VAC (+10%/-15%)
LED Indicators
Power/fault status LEDs
Mounting
Panel Mount
Nominal Bus Voltage
160/320 VDC
Operation
Proportional Output
Peak Output Current
7.0 A
Product Category
Servocontroller
PWM Frequency
20 kHz fixed
Type
Brushless Servo Drive
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Frequently Asked Questions about SC402-037-T3:

Q: What makes the SC402-037-T3 servo drive highly efficient?

A: The SC402-037-T3 offers an efficiency greater than 90% during operation, ensuring minimal energy loss and reliable performance for industrial applications.

Q: Why does the SC402-037-T3 use natural convection for cooling?

A: The SC402-037-T3 relies on natural convection for cooling, making it ideal for environments where active cooling systems are impractical or unavailable.

Q: What is the significance of the PWM frequency in the SC402-037-T3 drive?

A: With a fixed 20 kHz PWM frequency, the SC402-037-T3 ensures smooth motor operation with minimal noise and heat generation, ideal for precision control.

Q: How does the SC402-037-T3 handle fault conditions?

A: The SC402-037-T3 features LED indicators for power and fault status, plus a fault output with a 30 VDC max to signal issues without compromising system operation.

Q: Why is the SC402-037-T3 designed for four-quadrant operation?

A: Four-quadrant operation enables the SC402-037-T3 to handle regenerative braking and reverse torque, offering full motor control in all directions, useful in dynamic applications.


Internal Product Review

  • ‘‘The SC402-037-T3 is a powerful servo drive designed for industrial applications. It features a high efficiency of over 90% and supports a wide input voltage range of 115 or 230 VAC. This drive is widely used in applications that require precise motor control, such as robotics, CNC machinery and automated manufacturing systems.’’

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