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- 1747-L552
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- 25 × 16.6 × 5.9 cm
- 0.45kg
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Allen Bradley 1747-L552 Detailed Product Introduction and Technical Specifications
Product Overview
The Allen Bradley 1747-L552 is a SLC 5/05 series programmable logic controller CPU module used in the SLC 500 automation platform. It is a mid-to-high performance industrial processor designed for applications requiring stable real-time control, Ethernet communication capability, and moderate-to-large program memory capacity.
This controller is widely used in manufacturing automation, process control systems, packaging production lines, and distributed industrial networks.
The 1747-L552 is positioned as a 32K memory version in the SLC 5/05 family, making it suitable for more complex control logic and larger-scale automation projects compared to lower-memory CPUs in the same series.
Brand Information
| Item | Details |
|---|---|
| Brand | Allen Bradley |
| Product Model | 1747-L552 |
| Product Type | PLC CPU Module |
| Product Family | SLC 500 Series |
| Series | SLC 5/05 Controller Series |
| Main Function | Central Processing Unit for PLC Systems |
| Communication | Ethernet, RS-232 |
| Installation Type | Rack-mounted CPU Module |
Product Series Introduction
SLC 500 Series Overview
The SLC 500 series is a modular PLC system designed for industrial automation and machine control.
It allows flexible configuration of CPU modules, I/O modules, communication modules, and power supplies within a rack-based architecture.
The system is widely used in industrial environments due to its reliability, long lifecycle, and strong compatibility with legacy automation systems.
The 1747-L552 belongs to the SLC 5/05 CPU family, which integrates Ethernet communication for modern industrial networking.
Detailed Technical Specifications of 1747-L552
| Parameter | Specification |
|---|---|
| Model | 1747-L552 |
| Processor Type | SLC 5/05 CPU |
| User Memory | 32K words |
| Program Memory | 32 KB battery-backed RAM |
| Instruction Execution Speed | ~0.9 ms / K instruction |
| I/O Scan Time | ~0.225 ms |
| Maximum 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 |
| Backplane Current (5V DC) | 1.0 A |
| Backplane Current (24V DC) | 0 A |
| Memory Type | Battery-backed RAM |
| Backup Memory | Flash EPROM support |
| Battery Type | 1747-BA |
| 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 × 16.6 × 5.9 cm |
| Weight (kg) | ~0.45 kg (varies by revision and condition) |
Product Features
1. Integrated Ethernet Communication
The 1747-L552 includes Ethernet capability, allowing direct connection to SCADA systems, HMIs, and industrial networks.
This improves system integration and reduces dependency on additional communication modules.
2. Stable Processing Performance
The CPU delivers consistent scan cycles with approximately 0.9 ms per K instruction execution speed.
This ensures predictable real-time control performance in industrial environments.
3. 32K Memory Capacity
With 32K words of memory, the controller supports medium-to-large automation programs.
It is suitable for systems requiring complex logic, sequencing, and data handling.
4. Multi-Protocol Communication Support
Supports Ethernet/IP, DF1, DH-485, and ASCII protocols for flexible system integration.
This allows compatibility with both modern Ethernet systems and legacy industrial networks.
5. High I/O Expansion Capability
Supports up to 4096 digital inputs and outputs and up to 480 analog channels.
This makes it suitable for large distributed automation systems.
6. Reliable Memory Retention
Battery-backed RAM ensures program retention during power loss.
Flash EPROM support provides additional backup security for critical applications.
Product Applications
Manufacturing Automation
Used in production lines requiring synchronized machine control and process coordination.
Process Control Systems
Applied in chemical plants, water treatment systems, and continuous process industries.
Packaging Equipment
Controls high-speed packaging, labeling, and filling systems.
Material Handling Systems
Manages conveyor systems, logistics automation, and warehouse operations.
Industrial Network Systems
Used in Ethernet-based distributed control systems for plant-wide automation.
Product Advantages
| Advantage | Description |
|---|---|
| Built-in Ethernet Port | Enables direct network integration |
| Stable Real-Time Control | Deterministic scan cycle |
| Medium-Large Memory Capacity | Supports complex programs |
| Strong Communication Flexibility | Ethernet + legacy protocols |
| High I/O Expansion | Suitable for large systems |
| Battery Backup System | Prevents data loss |
| Industrial Durability | Long service life |
| Legacy Compatibility | Works in existing SLC systems |
Recommended Models from the Same Series or Related Series
| Model | Product Type | Main Function | Application | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 1747-L531 | CPU Module | SLC 5/03 controller | Medium automation | 25 × 16.6 × 5.9 cm | 0.48 kg |
| 1747-L532 | CPU Module | Advanced SLC 5/03 CPU | Industrial systems | 25 × 16.6 × 5.9 cm | 0.34 kg |
| 1747-L541 | CPU Module | SLC 5/04 controller | Large systems | 25 × 17 × 6 cm | 0.45 kg |
| 1747-L542 | CPU Module | High-performance CPU | Distributed control | 25 × 16.6 × 5.9 cm | 0.40–0.45 kg |
| 1747-L551 | CPU Module | Ethernet-enabled CPU | Network systems | 25 × 16.5 × 5.6 cm | 0.42 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-L552 acts as the central processing unit in SLC 500 PLC systems.
It executes control logic, manages I/O modules, and enables Ethernet-based communication between industrial devices.
Its 32K memory and Ethernet capability make it suitable for medium-to-large distributed control systems.
Installation and Maintenance Characteristics
The CPU is installed in a standard SLC 500 rack system together with power supply and I/O modules.
LED indicators provide real-time system status including run, fault, and communication signals.
Maintenance is simplified due to modular hardware structure and stable architecture design.
Battery replacement ensures long-term program retention.
Industrial Reliability
The 1747-L552 is widely used in industrial environments due to its stable performance and Ethernet-enabled architecture.
It remains a key controller in SLC 5/05-based systems still operating in global manufacturing plants.
Its durability and communication flexibility make it suitable for long-term industrial deployment.
Summary
The Allen Bradley 1747-L552 is a SLC 5/05 PLC CPU designed for medium-to-large industrial automation systems requiring Ethernet communication.
It provides 32K memory capacity, stable processing speed, and strong multi-protocol networking capability.
Its reliability, scalability, and industrial durability make it a widely used controller in both legacy and modern industrial environments.