Allen-Bradley, a brand of Rockwell Automation, has been a cornerstone of industrial automation for over a century. From the classic PLC-5 to modern ControlLogix platforms, Allen-Bradley controllers power manufacturing operations worldwide.
Allen-Bradley PLC Platform Overview
ControlLogix (1756 Series)
The ControlLogix platform represents Allen-Bradley’s flagship programmable logic controller system:
- 1756-L71 – ControlLogix 5571 processor
- 1756-IF16 – 16-channel analog input module
- 1756-OF8 – 8-channel analog output module
- 1756-IB16 – 16-point digital input module
- 1756-OB16 – 16-point digital output module
- 1756-ENBT – EtherNet/IP communication module
- 1756-PA75 – Power supply module
CompactLogix (1769 Series)
CompactLogix offers a cost-effective solution for mid-range applications:
- 1769-L33ER – CompactLogix 5370 controller
- 1769-IF8 – 8-channel analog input module
- 1769-OF4 – 4-channel analog output module
- 1769-IQ16 – 16-point digital input module
Legacy PLC-5 and SLC 500
Many facilities still operate PLC-5 and SLC 500 systems:
- 1785-L40B – PLC-5/40 processor
- 1747-L551 – SLC 5/05 processor
- 1746-IB16 – SLC 500 digital input module
- 1746-OB16 – SLC 500 digital output module
Critical Allen-Bradley Spare Parts Categories
Processor Modules
Allen-Bradley processors are the heart of any PLC system. Maintaining backup processors minimizes downtime during unexpected failures.
I/O Modules
Allen-Bradley I/O modules interface with field devices:
- Analog input modules – Process 4-20mA, 0-10V signals
- Analog output modules – Drive control valves and VFDs
- Digital input modules – Monitor switches and sensors
- Digital output modules – Control solenoids and contactors
Communication Modules
- EtherNet/IP modules – High-speed industrial Ethernet
- ControlNet modules – Deterministic control network
- DeviceNet modules – Device-level networking
Explore our inventory of Allen-Bradley automation parts or contact our team for assistance.