Overview
The Allen-Bradley 20-750-S is a Safe Torque-Off (STO) option module engineered for the PowerFlex 750 Series AC drives. This module provides critical safety functionality by enabling the safe, monitored shutdown of motor torque in industrial automation and motion control applications. The 20-750-S installs directly into a dedicated module slot on compatible PowerFlex 750 drives, making it an essential component for systems requiring SIL-rated safety control.
Key Features
- Safe Torque-Off (STO) safety function for emergency motor shutdown
- Module slot installation—no external wiring required for basic integration
- Digital logic I/O compatibility with status indicator LEDs for real-time monitoring
- Low power consumption (90 mA at 5 VDC) minimizes thermal load
- Industry certifications including CE, UL, CUL, KC, CCC, and C-TICK for global deployment
Technical Specifications
- Part Number: 20-750-S
- Module Type: Safe Torque-Off (STO) Option Module
- Operating Voltage: 5 VDC (module), 24 VDC logic/signal
- Current Draw: 90 mA
- Installation: Module slot (PowerFlex 750 Series drives)
- I/O Interface: Digital logic with status indicator LEDs
- Certifications: CE, UL, CUL, KC, CCC, C-TICK, GOST
- Mounting: Internal module slot (no external bracket required)
- Series: PowerFlex 750
- Manufacturer: Allen-Bradley / Rockwell Automation
Typical Applications
The 20-750-S is commonly deployed in:
- Packaging machinery requiring emergency stop and safe shutdown functions
- Conveyor systems with monitored torque-off safety requirements
- Material handling equipment in food, beverage, and pharmaceutical production
- Custom OEM motion control systems with integrated safety protocols
- Industrial presses, injection molding, and automation lines requiring SIL-rated safety control
Compatibility & Replacements
Compatible With
- PowerFlex 750 Series AC Drives (all frame sizes with module slots)
- Studio 5000 Logix Designer for safety function configuration
- EtherNet/IP-enabled PowerFlex 750 systems
- Allen-Bradley CompactLogix and ControlLogix controllers running safety-certified firmware
- Systems requiring SIL 3 safety-rated control
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 20-750-S is a specific safety option module for PowerFlex 750 drives and is not a direct replacement for earlier PowerFlex 700 or PowerFlex 753 safety modules.
Works With
- Studio 5000 Logix Designer (motion and safety control)
- PowerFlex 750 drive firmware and system software
- EtherNet/IP communication protocol
- Standard 24 VDC industrial control voltage systems
- Digital I/O safety control networks
