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Allen Bradley 1747-M3 Detailed Product Introduction and Technical Specifications
Product Overview
The Allen Bradley 1747-M3 is a memory module designed for the SLC 500 programmable logic controller system. It is used to provide non-volatile program storage and system backup for SLC controllers, ensuring that automation programs are preserved during power loss, system shutdown, or controller replacement.
This module is mainly used in industrial automation environments where stable program retention and fast recovery are required. It is especially common in legacy SLC 500 systems that still operate in manufacturing, process control, and machine automation applications.
The 1747-M3 plays an important role in improving system reliability by storing PLC logic and configuration data in a removable memory device.
Brand Information
| Item | Details |
|---|---|
| Brand | Allen Bradley |
| Product Model | 1747-M3 |
| Product Type | EEPROM Memory Module |
| Product Family | SLC 500 Series |
| Series | SLC Memory Expansion Modules |
| Main Function | Program and Data Storage |
| Storage Type | EEPROM / Non-volatile Memory |
| Installation Type | Plug-in module |
Product Series Introduction
SLC 500 System Overview
The SLC 500 series is a modular PLC system designed for industrial automation control.
It consists of CPU modules, I/O modules, communication modules, and memory modules installed in a rack or fixed controller system.
The system is widely used in manufacturing, packaging, process control, and material handling industries due to its reliability and long service life.
The 1747-M3 is part of the memory module family used to extend or back up controller program storage capacity.
Detailed Technical Specifications of 1747-M3
| Parameter | Specification |
|---|---|
| Model | 1747-M3 |
| Product Type | Memory Module |
| Memory Capacity | 64K words (typical configuration) |
| Storage Type | EEPROM / Flash-based non-volatile memory |
| Function | PLC program and data backup |
| Compatible Controllers | SLC 5/01, SLC 5/02 (and compatible SLC systems) |
| System Compatibility | SLC 500 fixed & modular systems |
| Data Retention | Long-term non-volatile storage |
| Program Storage | Full PLC program backup |
| Installation Method | Plug-in module |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5%–95% non-condensing |
| Shock Resistance | Industrial standard |
| Vibration Resistance | IEC industrial rating |
| Dimensions | ~5 × 2.5 × 2.5 cm |
| Weight (kg) | ~0.001–0.10 kg (varies by revision) |
Product Features
1. Non-Volatile Memory Storage
The 1747-M3 uses EEPROM-based technology, allowing it to retain stored PLC programs even when power is completely removed.
This eliminates dependency on continuous power or battery backup for program retention.
2. Stable Program Backup Function
The module stores PLC logic and configuration data, ensuring that system recovery can be performed quickly after failure or replacement.
3. Compatibility with SLC Controllers
Designed for use in SLC 500 systems, especially SLC 5/01 and SLC 5/02 controllers.
It integrates seamlessly into existing industrial PLC architectures.
4. Simple Plug-in Installation
The module is compact and installed directly into the controller memory slot without complex configuration.
5. Industrial Durability
Built for industrial environments with resistance to vibration, temperature variation, and electrical noise.
Product Applications
PLC Program Backup
Used to store control programs for recovery and duplication in industrial systems.
Industrial Machine Control
Ensures stable program retention in automated machinery and production systems.
System Maintenance and Replacement
Allows fast restoration of PLC programs during controller replacement or system servicing.
Manufacturing Equipment
Used in production machines requiring stable and reliable control logic storage.
Legacy Automation Systems
Commonly used in older SLC 500 installations still operating in industrial plants.
Product Advantages
| Advantage | Description |
|---|---|
| Non-Volatile Storage | Retains data without power |
| Reliable Backup Function | Prevents program loss |
| Simple Installation | Plug-in module design |
| High Compatibility | Works with SLC 5/01 and 5/02 |
| Industrial Reliability | Stable in harsh environments |
| Fast Recovery Capability | Reduces downtime |
| Compact Design | Easy integration |
| Long Service Life | Suitable for long-term use |
Recommended Models from Same Series or Related Series
| Model | Product Type | Main Function | Application | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 1747-M0 | Memory Module | Basic EEPROM storage | Small PLC systems | ~5 × 2.5 × 2.5 cm | ~0.09 kg |
| 1747-M1 | EEPROM Module | Program backup | SLC 5/01–5/02 systems | ~5 × 2.5 × 2.5 cm | ~0.11 kg |
| 1747-M11 | EEPROM Module | Enhanced backup | SLC systems | ~5 × 2.5 × 2.5 cm | ~0.10 kg |
| 1747-M3 | Memory Module | 64K program storage | SLC 500 controllers | ~5 × 2.5 × 2.5 cm | ~0.001–0.10 kg |
| 1747-M13 | Flash Module | High-capacity storage | SLC 5/03–5/05 systems | ~7 × 6 × 1 cm | ~0.05–0.18 kg |
Recommended Popular Models from Same Brand
| Model | Product Category | Main Features | Application Area | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 1747-L541 | CPU Module | SLC 5/04 processor | Large automation systems | 25 × 17 × 6 cm | 0.45 kg |
| 1747-L542 | CPU Module | High-performance CPU | Distributed control systems | 25 × 16.6 × 5.9 cm | 0.40 kg |
| 1747-L551 | CPU Module | Ethernet-enabled CPU | Networked automation | 25 × 16.5 × 5.6 cm | 0.42 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 |
System Role in Industrial Automation
The 1747-M3 functions as a memory storage and backup module within SLC 500 PLC systems.
It ensures that PLC programs and configuration data are securely stored and can be restored after power loss or system replacement.
It plays a key role in maintaining continuity and reliability in industrial automation systems.
Installation and Maintenance Characteristics
The module is installed directly into the PLC memory slot.
It does not require complex configuration or software setup.
Maintenance is minimal and typically involves replacement only when the module fails or system upgrades are required.
Its solid-state design ensures long-term reliability in industrial environments.
Industrial Reliability
The 1747-M3 is widely used in industrial automation systems due to its stable memory retention and compatibility with SLC controllers.
It remains an important component in legacy systems still operating in global manufacturing environments.
Its durability and simplicity make it suitable for long-term industrial use.
Summary
The Allen Bradley 1747-M3 is a 64K memory module designed for SLC 500 PLC systems.
It provides reliable non-volatile program storage, ensuring safe backup and fast recovery of automation logic.
Its compatibility, durability, and stable performance make it a key component in industrial control systems requiring dependable memory retention.