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- 25 × 16.8 × 5.9 cm
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Allen Bradley 1747-L553 Detailed Product Introduction and Technical Specifications
Product Overview
The Allen Bradley 1747-L553 is a high-end SLC 5/05 series programmable logic controller CPU module used in the SLC 500 automation platform. It represents the highest memory configuration within the SLC 5/05 family and is designed for complex industrial automation systems requiring strong processing capability, Ethernet communication, and large-scale I/O handling.
This controller is widely applied in manufacturing automation, process control systems, packaging production lines, material handling systems, and distributed industrial networks.
Compared with lower SLC 5/05 models, the 1747-L553 offers significantly larger memory capacity (64K words) and enhanced system integration capability, making it suitable for advanced multi-system coordination and SCADA-level applications.
It is also widely used in long-life industrial installations where system stability and compatibility with existing SLC 500 infrastructure are required.
Brand Information
| Item | Details |
|---|---|
| Brand | Allen Bradley |
| Product Model | 1747-L553 |
| Product Type | PLC CPU Module |
| Product Family | SLC 500 Series |
| Series | SLC 5/05 Controller Series |
| Main Function | Central Processing Unit for Industrial Automation |
| Communication | Ethernet, RS-232, DH-485 |
| Installation Type | Rack-mounted CPU Module |
Product Series Introduction
SLC 500 Series Overview
The SLC 500 series is a modular PLC platform designed for industrial automation and machine control applications.
It uses a rack-based architecture that allows flexible configuration of CPU modules, I/O modules, communication modules, and power supplies.
The system is widely adopted in manufacturing, process industries, logistics, and packaging automation due to its reliability and long operational lifecycle.
The 1747-L553 belongs to the SLC 5/05 CPU family, which is the highest performance and highest memory variant within the SLC 500 platform.
Detailed Technical Specifications of 1747-L553
| Parameter | Specification |
|---|---|
| Model | 1747-L553 |
| Processor Type | SLC 5/05 CPU |
| User Memory | 64K words |
| Program/Data Split | ~60K program / 4K data |
| Instruction Execution Speed | ~0.9 ms / K instruction |
| Bit Instruction Time | ~0.37 µs |
| I/O Capacity | 4096 inputs / 4096 outputs |
| Analog I/O Support | Up to 480 channels |
| Maximum I/O Chassis | 3 chassis |
| Maximum Module Slots | 30 slots |
| Communication Ports | Ethernet, RS-232 |
| Communication Protocols | Ethernet/IP, DF1, DH-485, ASCII |
| Ethernet Speed | 10/100 Mbps |
| Backplane Current (5V DC) | 1.0 A |
| Backplane Current (24V DC) | 200 mA |
| Memory Type | Battery-backed RAM |
| Backup Memory | Flash EPROM support (1747-M13) |
| Battery Type | 1747-BA lithium battery |
| Power Supply Compatibility | 1746-P1 to 1746-P7 |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5%–95% non-condensing |
| Shock Resistance | 30G operating |
| Vibration Resistance | Industrial standard |
| Dimensions | 25 × 16.8 × 5.9 cm |
| Weight (kg) | ~0.44 kg |
Product Features
1. Highest Memory Capacity in SLC 5/05 Series
The 1747-L553 provides 64K words of user memory, the maximum available in the SLC 5/05 family.
This allows it to support very large control programs, complex logic structures, and high-volume data handling.
2. Dual Communication Architecture
The controller supports both Ethernet and RS-232 communication simultaneously.
This enables integration with SCADA systems, programming terminals, HMIs, and industrial networks without additional modules.
3. High-Speed Industrial Ethernet
With 10/100 Mbps Ethernet support, the controller can communicate efficiently with multiple devices over long distances.
It is suitable for plant-wide monitoring and distributed control systems.
4. Advanced Instruction Set
Supports floating-point math, PID control, indirect addressing, and advanced logic operations.
This makes it suitable for process automation and high-precision control applications.
5. High I/O Expansion Capability
Supports up to 4096 digital inputs/outputs and 480 analog channels.
This enables deployment in large industrial systems with multiple subsystems.
6. Reliable Memory Backup System
Battery-backed RAM ensures program retention during power loss, while Flash EPROM provides additional backup reliability.
Product Applications
Large Manufacturing Systems
Used in complex production lines requiring synchronized multi-machine control.
Process Industries
Applied in chemical processing, oil & gas systems, water treatment plants, and continuous production environments.
Packaging Automation
Controls high-speed filling, labeling, and packaging machinery.
Material Handling Systems
Manages conveyor networks, warehouse logistics, and automated sorting systems.
SCADA and Distributed Control Systems
Used in plant-wide monitoring and multi-node control via Ethernet and DH+ networks.
Product Advantages
| Advantage | Description |
|---|---|
| 64K Maximum Memory | Highest capacity in SLC 5/05 family |
| Dual Communication Ports | Ethernet + RS-232 support |
| High-Speed Ethernet | 10/100 Mbps industrial networking |
| Strong Processing Performance | Stable scan cycle execution |
| Large I/O Capability | Suitable for complex systems |
| Battery Backup Memory | Prevents data loss |
| Advanced Instruction Set | Supports complex automation logic |
| Industrial Reliability | Long lifecycle design |
Recommended Models from Same Series or Related Series
| Model | Product Type | Main Function | Application | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 1747-L541 | CPU Module | SLC 5/04 controller | Medium-large systems | 25 × 17 × 6 cm | 0.45 kg |
| 1747-L542 | CPU Module | High-performance CPU | Distributed control | 25 × 16.6 × 5.9 cm | 0.40 kg |
| 1747-L543 | CPU Module | High-end SLC 5/04 CPU | Complex automation | 25 × 16.5 × 6 cm | 0.45 kg |
| 1747-L551 | CPU Module | Ethernet-enabled CPU | Network systems | 25 × 16.5 × 5.6 cm | 0.42 kg |
| 1747-L553 | CPU Module | Top-tier SLC 5/05 CPU | Large automation systems | 25 × 16.8 × 5.9 cm | 0.44 kg |
Recommended Popular Models from Same Brand
| Model | Product Category | Main Features | Application Area | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 1756-EN2TR | Ethernet Module | Dual Ethernet/IP ports | Industrial networking | 14 × 11 × 8 cm | 0.45 kg |
| 1769-L33ER | Compact PLC | Built-in Ethernet/IP | Machine automation | 18 × 12 × 9 cm | 0.92 kg |
| 1756-IB16 | Digital Input Module | 16-channel input | Factory systems | 15 × 11 × 6 cm | 0.30 kg |
| 1769-IF8 | Analog Input Module | 8-channel analog input | Process control | 12 × 9 × 5 cm | 0.35 kg |
| 1783-US8T | Industrial Switch | Managed Ethernet switch | Network systems | 16 × 12 × 5 cm | 0.80 kg |
System Role in Industrial Automation
The 1747-L553 acts as the central processing unit in SLC 500 PLC systems.
It executes control logic, manages I/O modules, and coordinates communication across Ethernet and legacy industrial networks.
Its high memory capacity and Ethernet capability make it suitable for large distributed automation systems and SCADA integration.
Installation and Maintenance Characteristics
The CPU is installed in a standard SLC 500 rack system with power supply and I/O modules.
LED indicators display system status such as run, fault, battery, and communication activity.
Maintenance is simplified due to modular structure and mature industrial design.
Battery replacement ensures long-term program retention and system stability.
Industrial Reliability
The 1747-L553 is widely used in industrial environments due to its high performance and strong network capability.
It remains one of the most capable processors in the SLC 5/05 family and continues to operate in many legacy systems worldwide.
Its durability and communication flexibility make it suitable for long-term industrial deployment.
Summary
The Allen Bradley 1747-L553 is the highest-performance SLC 5/05 PLC CPU designed for complex industrial automation systems.
It provides 64K memory capacity, dual communication ports, and high-speed Ethernet connectivity.
Its reliability, scalability, and industrial robustness make it a core controller for both legacy and advanced automation architectures.