A-B 440C-CR30-22BBB Safety Controller

Allen-Bradley 440C-CR30-22BBB Guardmaster Safety Controller

 

 

The Allen-Bradley 440C-CR30-22BBB is a software-configurable safety controller (Guardmaster CR30 series) used to build machine safety logic such as emergency stop, safety gates, light curtains, and interlock systems. It is more advanced than a basic safety relay because it allows programmable safety functions with multiple safety inputs and outputs.

It is commonly used in industrial machinery safety circuits and supports integration with PLC systems via communication interfaces.

Key Specifications

• Model: 440C-CR30-22BBB
• Series: Guardmaster CR30
• Brand: Allen-Bradley (Rockwell Automation)
• Type: Programmable Safety Controller
• Safety Inputs/Outputs:
  • 22 embedded safety I/O points
  • Multiple configurable safety zones
• Supply Voltage: 24V DC
• Safety Rating:
  • Up to PLe (ISO 13849-1)
  • SIL CL3 (IEC 62061)
• Programming Software:
  • Connected Components Workbench (CCW) / Studio 5000 integration
• Communication Options:
  • Modbus RTU
  • Optional EtherNet/IP module
• Mounting: DIN rail
• Configuration: Function block-based safety logic

What it does (simple explanation)

Safety Inputs (E-Stop, Door Switch, Light Curtain)
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440C-CR30 Safety Controller
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Safety Logic (programmable rules)
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Safety Outputs (contactors, drives, STO, relays)
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Machine stops safely if fault occurs

Main Functions

• Builds programmable safety logic (AND/OR safety functions)
• Monitors emergency stop circuits
• Controls safety gates and interlocks
• Interfaces with light curtains and safety sensors
• Manages safety zones (multi-area machine protection)
• Sends diagnostics to PLC / SCADA systems
• Provides safe shutdown of machinery

Key Features

• 22 built-in safety I/O points
• Software-configurable safety function blocks
• Supports multi-zone safety architecture
• USB and serial communication for programming
• Optional Ethernet/Modbus integration
• Diagnostic feedback for maintenance and fault detection
• Compact “safety PLC-like” functionality (but not a full PLC)

Applications

• Industrial machinery safety systems
• Packaging machines
• Robotics safety fencing systems
• Conveyor emergency stop networks
• Press machines and stamping systems
• Automated production lines