S Series Industrial Purpose Micro Drives
Ratings from 240 - 480V up to 15HP
Industrial Micro Drives
Benshaw S Series Variable Frequency Micro Drives provide a rugged, compact, economical chassis drive solution for low horsepower applications. Each drive in the series offers quick setup and preconfigured settings for common variable frequency drive applications, and a flexible, programmable I/O for more demanding applications or complex control strategies. S Series drives are dual rated for both variable torque (120%) and constant torque (150%).

Highlights
Robust Design
Construction of the air flow design minimizes exposure of critical components (IGBT, PCB, etc.) to outside contaminants
Bult-in EMC Filter
Embedded C3 EM filter to meet EN618000-3 standards and provide noise reduction
V/F Acceleration and Deceleration Function
Auto torque boost (ATB) enhancing acceleration performance in V/F modeFlux braking enhancing deceleration performance in V/F mode
Sensorless Vector Control
Performs enhanced high torque at low speed with sensorless vector control
Standard Features
- V/Hz control
- Standard and heavy duty rated
- Sensorless vector (induction motors)
- Sensorless vector (PMAC)
- EMC filter built in (460V only)
- Slave multiple drives off one keypad
- Modbus RTU standard
- Ethernet IP, Modbus TCP, Profibus-DP
- Peer-to-peer communications
- PLC functionality (18 steps)
- Internal brake IGBT
Available options include a remote keypad (LCD and cable), an extended I/O card (adds three digital inputs, two relay outputs, one analog input and one analog output), and a conduit box.
Standard Hardware & Software Features
Hardware
- Dual Rated – Normal and Heavy Duty
- 240V: 1HP~15HP (ND), 0.5HP~10HP (HD)
- 480V: 1HP~15HP (ND), 0.5HP~10 HP (HD)
- Display – 4 digit, 7 Segment with 4 LED Indicators
- Protected Chassis – UL Open (IP20)
- DIN Rail Mounting (up to 7.5HP, 5.5 kW)
- EMC Filter (480V only)
- Internal Brake IGBT
- Single Phase Input (derating required)
- Built in Potentiometer
- RJ45 Port (Modbus-RTU)
Software
- Modbus – RTU
- Control – V/Hz, Sensorless Vector, Slip Compensation
- Auto Tuning
- Torque Limits
- PID Control
- Regen Avoidance
- Kinetic Energy Buffering (KEB), Ride Through









