The Allen-Bradley 1756-PLS ControlLogix Programmable Limit Switch Module is designed to monitor machine positions, control actuators, and manage limit switch positions in industrial applications. It is compatible with Rockwell Automation’s ControlLogix system and offers 16 inputs and 16 outputs, providing versatile control for complex systems. The module supports energizing and de-energizing outputs while ensuring safe and efficient machine operation through its customizable input/output configurations.

Technical Specifications

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Part Number: 1756-PLS
• Series: ControlLogix
• Module Type: Programmable Limit Switch
• Inputs: 16 single-ended inputs, 10–31.2V DC (4 groups of 4 inputs with separate commons)
• Outputs: 16 outputs, 10–31.2V DC (1A max per output, 4 groups of 4 outputs with separate power and commons)
• Operation Modes: 3 contiguous slots in ControlLogix chassis
• Backplane Current:
  • 5V: 1000 mA
  • 24V: 125 mA
• Power Dissipation:
  • 25.7 Watts at 30°C
  • 21.3 Watts at 60°C
• Terminal Blocks: 3 RTBs (1756-TBSH or 1756-TBNH)
• Dimensions: 5.51 x 4.41 x 5.71 inches
• Operating Temperature: 0 to 60°C (32 to 140°F)
• Operating Humidity: 0–95% non-condensing
• Thermal Dissipation:
  • 6.35 BTU/hr at nominal DC voltage
  • 9.56 BTU/hr at maximum DC voltage
• Maximum Off-State Voltage: 5V DC
• Maximum Off-State Current: 1.5 mA
• Maximum On-State Current: 3–10 mA