The Allen-Bradley 1756-L73S is a high-performance GuardLogix Controller designed for functional safety applications. It integrates safety and control functions into a single controller, ensuring reliable performance up to Safety Integrity Level (SIL) 3 and Performance Level (PL) e1. This makes it ideal for applications that require a high level of safety and process control.

Technical Specifications

• Manufacturer: Allen-Bradley (Rockwell Automation)
• Model Number: 1756-L73S
• Product Type: GuardLogix Controller
• Processor: Integrated high-performance processor
• User Memory: 8 MB
• Safety Memory: 4 MB
• I/O Memory: 0.98 MB
• Optional Nonvolatile Memory:
  • 1 GB (1756-SD1)
  • 2 GB (1756-SD2)
• Digital I/O: Max 128,000
• Analog I/O: Max 4,000
• Communication Protocols:
  • EtherNet/IP
  • ControlNet
  • DeviceNet
  • Modbus TCP
• Operating Temperature Range: -25°C to +70°C
• Power Dissipation: 2.5 W
• Thermal Dissipation: 8.5 BTU/hr
• Current Draw:
  • 5 mA @ 1.2V DC
  • 800 mA @ 5.1V DC
• Isolation Voltage: 30V (continuous), type tested at 980V AC for 60 seconds
• Slot Width: 2 (both modules needed; each occupies one slot)
• Weight: 0.55 lbs
• Chassis Mount: Open style