The Allen-Bradley 1756-L1 ControlLogix 5550 controller is an early model in the ControlLogix series, offering robust automation solutions with its 64KB user memory and integrated RS232 communication port. This versatile controller supports up to 250 connections and allows seamless communication across networks like DeviceNet, ControlNet, DH+, and EtherNet/IP, despite lacking nonvolatile memory. Designed to fit any slot in a compatible ControlLogix chassis, the 1756-L1 features LED diagnostics and adheres to IEC-61131-2 programming standards for managing medium-scale processes, while maintaining efficient power and thermal management with a backplane current of 0.65 Amps at 5 Volts DC.
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Technical specifications for 1756-L1
| Manufacturer | Rockwell Automation |
|---|---|
| Brand | Allen-Bradley |
| Part Number/Catalog No. | 1756-L1 |
| Series | ControlLogix |
| Module Type | Processor Module |
| User Memory | 64 KB |
| Isolation Voltage | 30 Volts Continuous |
| Communication Port | One (1) RS232 |
| Operating Temperature | 32-140 Fahrenheit (0-60 Celsius) |
| Compatible Memory Modules | 1756-M1, 1756-M2 and 1756-M3 |
| Minimum Operating Current | 2 milliamps at 10 Volts DC |
| Battery Back-Up | 1756-BA1; 1756-BA2 |
| Maximum Operating Current | 3.5 milliamps at 30 Volts DC |
| Communication Cable | 1756-CP3 |
| Maximum Input Current, Off-State | 1.5 milliamps |
| Enclosure | Open |
| Power Dissipation (Max) | 4.1 Watts at 60 degrees Celsius |
| SLot Width | One (1) |
| Backplane Current at 5 Volts | 120 milliamps |
| Backplane Current at 24 Volts | 2 milliamps |
| Removeable Terminal Block(s) | 1756-TBCH, 1756-TBS6H |
| UPC | 10612598169532 |
