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- 1756-L55M22
- ControlLogix ControlNet Communication Module
- USA
- 20.5 × 15.2 × 7.6 cm
- 1.55kg
- Xiamen, China
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1756-L55M22 Detailed Product Overview
Product Introduction
The 1756-L55M22 is a ControlLogix programmable automation controller (PAC) designed for industrial automation systems requiring reliable high-speed logic execution, modular system integration, and multi-network communication capability. It belongs to the ControlLogix 5555 controller family and is typically used in medium to complex automation architectures.
This controller acts as the central processing unit (CPU) within a ControlLogix chassis, coordinating input/output modules, communication modules, and executing industrial control programs such as ladder logic, structured text, and function block diagrams.
The 1756-L55M22 is widely used in manufacturing automation, process control systems, material handling equipment, and energy-related industrial systems where stable and deterministic control is required.
It is also commonly found in legacy industrial installations that require long-term maintenance support and spare part replacement.
Brand Information
| Item | Details |
|---|---|
| Brand | Allen Bradley |
| Product Category | PLC Controller Module |
| Product Type | ControlLogix Processor (CPU) |
| Platform | ControlLogix |
| Installation Method | Chassis Mounted |
| Main Function | Industrial Control & Logic Execution |
| Application Field | Industrial Automation Systems |
| System Role | Central Processing Unit (CPU) |
Product Series Overview
ControlLogix Series
The 1756-L55M22 belongs to the ControlLogix modular automation platform, designed for scalable, flexible, and distributed industrial control systems.
This system supports integration of multiple controllers, I/O modules, and communication modules into a unified automation architecture.
Key system capabilities include:
- PLC logic execution (ladder, structured text, function block)
- Modular I/O expansion
- Multi-protocol industrial communication
- Deterministic real-time control processing
- Distributed automation architecture
- System diagnostics and fault detection
- Industrial network integration
- Legacy system compatibility
ControlLogix systems are widely deployed in industrial plants requiring continuous and stable operation.
Product Features
1. High-Performance CPU Execution
Provides stable and deterministic execution of industrial automation logic programs.
2. Multi-Protocol Communication Support
Supports multiple industrial networks for system integration and data exchange.
3. Modular Expansion Capability
Compatible with a wide range of ControlLogix I/O and communication modules.
4. Deterministic Scan Performance
Ensures consistent and predictable control cycle timing.
5. Advanced Diagnostics
Supports system health monitoring and fault detection for maintenance efficiency.
6. Legacy System Compatibility
Widely used in existing installations requiring long-term spare parts and support.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-L55M22 |
| Product Type | ControlLogix Processor Module |
| Series | ControlLogix 5555 |
| CPU Type | PLC / PAC Controller |
| User Memory | ~2.0 MB (logic & data) |
| I/O Capacity | Up to 128,000 I/O points |
| Analog I/O Capacity | Up to 4,000 inputs / 2,000 outputs |
| Program Scan Time | ~0.05–0.08 ms (depending on load) |
| Communication Interfaces | Ethernet/IP, ControlNet, DeviceNet, RS-232 |
| Backplane Current (5V DC) | ~1.23 A |
| Backplane Current (24V DC) | ~14 mA |
| Power Dissipation | ~13–15 W |
| Thermal Dissipation | ~8–10 BTU/hr |
| Programming Software | RSLogix 5000 |
| Battery Type | 1756-BA1 / 1756-BATM |
| Redundancy Support | Not supported |
| Isolation Voltage | 30 V continuous |
| Diagnostics | Controller fault indicators |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5%–95% non-condensing |
| Vibration Resistance | 10–500 Hz |
| Shock Resistance | 30 g operational |
| Noise Immunity | Industrial EMC protection |
| Mounting Type | Chassis mount |
| Dimensions | 20.5 × 15.2 × 7.6 cm |
| Weight kg（ ） | 1.55 kg |
Product Applications
Industrial Process Automation
Used in chemical, oil, gas, and continuous process industries requiring stable control logic execution.
Manufacturing Production Systems
Applied in assembly lines, robotic stations, and automated production equipment.
Energy and Utility Systems
Used for monitoring and controlling energy distribution and generation processes.
Material Handling Systems
Controls conveyors, sorting systems, and warehouse automation equipment.
Packaging Machinery
Used in synchronized high-speed packaging and filling systems.
Legacy Industrial Installations
Commonly used in long-term maintenance and system replacement scenarios.
Product Advantages
High Processing Stability
Ensures reliable execution of complex automation programs.
Multi-Network Integration
Supports industrial communication protocols for system connectivity.
Strong Industrial Reliability
Designed for continuous operation in harsh environments.
Modular Flexibility
Easily integrates into ControlLogix chassis-based systems.
Fast Control Response
Low scan cycle ensures real-time control performance.
Long-Term Support Capability
Widely used in legacy systems requiring extended lifecycle maintenance.
Recommended Related Models (Same Series)
| Model | Product Type | Key Feature | System Role | Dimensions | Weight kg（ ） |
|---|---|---|---|---|---|
| 1756-L55 | PLC Controller | Standard CPU model | Main controller | 14.5 × 11.2 × 5.6 cm | 0.35 kg |
| 1756-L55M12 | PLC Controller | Memory variant CPU | Control processor | 14.5 × 11.2 × 5.6 cm | 0.36 kg |
| 1756-L55M13 | PLC Controller | Multi-protocol support CPU | System controller | 20.5 × 15.2 × 7.6 cm | 1.50 kg |
| 1756-L61 | PLC Controller | Enhanced processing CPU | Advanced controller | 14.5 × 11.2 × 5.6 cm | 0.50 kg |
| 1756-L63 | PLC Controller | Higher memory CPU | High-capacity controller | 14.5 × 11.2 × 5.6 cm | 0.55 kg |
Popular Models from Same Brand
| Model | Product Type | Function | Communication | Dimensions | Weight kg（ ） |
|---|---|---|---|---|---|
| 1756-EN2TR | Ethernet Module | Industrial networking | EtherNet/IP | 14.5 × 11.2 × 5.6 cm | 0.50 kg |
| 1756-IF8 | Analog Input Module | Signal acquisition | Backplane | 14.5 × 11.2 × 5.6 cm | 0.42 kg |
| 1756-IV32 | Digital Input Module | High-density inputs | Backplane | 30.0 × 3.8 × 11.1 cm | 1.00 kg |
| 2711P-T10C4D8 | HMI Panel | Operator interface | Ethernet/USB | 27.1 × 21.1 × 6.0 cm | 1.80 kg |
| 25B-D017N104 | VFD Drive | Motor control | EtherNet/IP | 35.0 × 21.6 × 18.0 cm | 4.90 kg |
Installation Notes
Install the controller in a properly grounded ControlLogix chassis.
Maintain stable cabinet temperature and ensure proper ventilation.
Use compatible firmware versions across system modules for stable operation.
Summary
The 1756-L55M22 is a high-performance ControlLogix PLC processor designed for industrial automation systems requiring stable logic execution, multi-network communication, and modular system integration.
It is widely used in manufacturing, process control, and energy systems, as well as legacy industrial installations requiring long-term operational stability and maintenance support.