Excellent PLC
Product Introduction
The Allen Bradley 1756-L55M22 ControlLogix Logix5555 Processor is a high-performance programmable automation controller (PAC) designed for the ControlLogix platform, featuring 750 KB of non-volatile user memory (NVRAM). This processor is ideal for industrial automation systems that require reliable memory retention even during power loss, allowing critical programs and data to remain intact.
The L55M22 supports real-time control, data acquisition, motion control, and communication with digital, analog, and specialty I/O modules. Its deterministic execution ensures predictable system behavior, making it suitable for manufacturing, process automation, and machinery monitoring applications where reliability and data integrity are critical.
This processor integrates seamlessly into ControlLogix racks, offering a compact footprint, efficient power consumption, and robust electrical isolation for stable and safe operation in industrial environments.
Product Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-L55M22 |
| Manufacturer | Allen Bradley |
| Product Type | Logix5555 Processor |
| System Compatibility | ControlLogix Platform |
| User Memory | 750 KB Non-Volatile RAM (NVRAM) |
| Mounting Type | ControlLogix chassis backplane |
| Electrical Isolation | Standard backplane isolation |
| Backplane Current @ 5 VDC | 6.31 mA |
| Backplane Current @ 24 VDC | 14 mA |
| Operating Temperature Range | 0 to 60°C (32 to 140°F) |
| Power Dissipation | Low power suitable for compact systems |
| Dimensions | 145.2 x 34.6 x 139.6 mm |
| Weight | 0.54 kg |
Applications
● Acts as the central processor for ControlLogix systems, managing I/O, logic, and motion control.
● Maintains program and data integrity during power loss with non-volatile RAM.
● Suitable for manufacturing, process automation, and machinery monitoring applications.
● Interfaces with ControlLogix analog, digital, and specialty modules for scalable automation.
● Supports real-time data acquisition, alarm monitoring, and sequencing operations.
● Optimized for systems requiring mid-range memory with reliable retention.
Advantages
● 750 KB non-volatile RAM ensures critical program and data retention during power interruptions.
● Deterministic execution supports reliable real-time control.
● Low backplane current reduces system power consumption.
● Standard electrical isolation protects the processor and backplane modules from transient events.
● Seamless integration with other ControlLogix modules provides flexible system expansion.
● Compact design and robust industrial performance enable efficient deployment in ControlLogix racks.
