SMB7275 Stand Alone Servo Drive

The SMB7275 Analog Brush PWM Servo Drive in the Stand Alone package configuration operates from 60-120 VAC and can output up to 75 A of continuous current. All Analog Brush PWM Servo Drives use +/-10 VDC for current (torque) or velocity (RPM) control and can accept tachometer feedback.

Command/Control Modes
+/-10 VDC for current (torque)
+/-10 VDC for velocity (RPM)
Analog tachometer (required for velocity control)
Dedicated Inputs
Single-ended or differential signal command, tachometer, +/- limits, inhibit/enable, fault, reset
Dedicated Outputs
Motor current, fault, low-speed electronic circuit breaker, high-speed electronic circuit breaker, over-voltage, and over-temperature
Environmental Conditions
Storage Temperature: -40°C to 80°C
Standard Operating Temperature: 0°C to 40°C without current derating, up to 50°C with 25% current derating
Special Operating Temperature: -40°C to 40°C without current derating, up to 50°C with 25% current derating
Humidity: 5% to 95% relative humidity, non-condensing
Altitude: Up to 1000m without derating, derate current 10% per 1000m above 1000m
Frequency response 2 kHz minimum for current loop and 750 Hertz minimum for velocity loop.
Silent operation 18 kHz PWM standard.
Dual mode operation Can be configured for current (torque) or velocity (RPM).
Current limit Peak motor current is adjustable.
RoHS Compliant RoHS compliance optional.
CE Marked All servo drives are CE marked.
Tachometer Required for velocity feedback.
Dual signal inputs One single-ended and one differential. Both inputs may be used simultaneously. Both have up to 15,000 A/V gain (velocity mode), and inputs will accept the typical +/-10 VDC analog signal.
+/- Limits and inhibit Three separate logic inputs can stop the motor in either or both directions. Inputs may be configured for active-high or active-low, pull-up or pull down termination, and a 0 to +5 VDC or 0 to +15 VDC range.
Fault input/output Open-collector output goes low in the event of a fault. Forcing the fault terminal low will inhibit the drive. The fault terminals outputs in a multi-axis system may be connected together to shut down all drives should any drive have a fault.
External fault reset Can reset drive externally in the event of a fault condition.
Ergonomic design Easy access to connections, adjustments, and test points..
LED diagnostics Displays various faults and operating conditions.
Short circuit protection Complete short circuit and ground fault protection.
Complete isolation Complete optical isolation between signal and power stage.
Fault protection Short from output to output, short from output to ground, drive RMS over current, drive under/over voltage, and drive over temperature.
SMT construction Provides ultra compact size, cost competitive package and high reliability.

Package Configuration

Input Voltage

Continuous Current

Drive Compliance


Modes of Control

Motor Types


Feedback Devices

SMB7275 Stand Alone - Dimensions are in inches [mm]