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Allen Bradley 1747-M1 Detailed Product Introduction and Technical Specifications
Product Overview
The Allen Bradley 1747-M1 is an EEPROM memory module used in the SLC 500 programmable logic controller system. It is designed for program and data table storage, providing non-volatile memory backup for SLC 5/01 and SLC 5/02 controllers.
This module is commonly used in industrial automation systems where program retention, backup protection, and system recovery are required. It plays an important role in ensuring that PLC programs are preserved during power loss or controller replacement.
The 1747-M1 is widely applied in legacy SLC 500 installations due to its reliability, simple structure, and long-term storage capability.
Brand Information
| Item | Details |
|---|---|
| Brand | Allen Bradley |
| Product Model | 1747-M1 |
| Product Type | EEPROM Memory Module |
| Product Family | SLC 500 Series |
| Series | SLC Fixed & Modular Controller Memory Accessories |
| Main Function | Program/Data Backup Storage |
| Memory Type | EEPROM |
| Installation Type | Plug-in memory module |
Product Series Introduction
SLC 500 System Overview
The SLC 500 series is a modular PLC system designed for industrial automation control applications.
It supports CPU modules, I/O modules, communication modules, and memory accessories installed in a rack or fixed configuration system.
The system is widely used in manufacturing, process control, packaging, and material handling industries due to its reliability and long lifecycle.
The 1747-M1 is part of the memory accessory lineup, designed to enhance program retention and system recovery capability.
Detailed Technical Specifications of 1747-M1
| Parameter | Specification |
|---|---|
| Model | 1747-M1 |
| Product Type | EEPROM Memory Module |
| Memory Capacity | 1K user words |
| Storage Type | Non-volatile EEPROM |
| Function | Program and data table storage |
| Compatible Controllers | SLC 5/01, SLC 5/02 |
| System Compatibility | SLC 500 fixed & modular systems |
| Backup Function | Program retention during power loss |
| Data Retention | Long-term non-volatile storage |
| Programming Use | Upload/download program storage |
| Installation Method | Slot-in memory 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 |
| Dimensions | ~5.1 × 2.5 × 2.5 cm |
| Weight (kg) | ~0.11 kg |
Product Features
1. Non-Volatile EEPROM Storage
The 1747-M1 uses EEPROM technology, which retains data even when power is removed.
This ensures PLC programs are preserved without battery dependency.
2. Program Backup and Recovery
The module stores PLC logic and data tables, allowing fast system recovery after failure or replacement.
This reduces downtime in industrial environments.
3. Compatibility with SLC Controllers
Designed specifically for SLC 5/01 and SLC 5/02 processors.
It integrates seamlessly with fixed and modular SLC 500 systems.
4. Simple Plug-in Design
The module is compact and easy to install directly into the controller or memory slot.
No complex configuration is required.
5. Industrial Reliability
Built for harsh industrial environments with high resistance to vibration and temperature variation.
Product Applications
PLC Program Backup
Stores control programs for recovery and duplication across systems.
Industrial Machine Control
Used in machines requiring stable program retention during maintenance or shutdown.
System Migration and Replacement
Assists in transferring programs between controllers during upgrades or repairs.
Manufacturing Equipment
Used in production equipment requiring stable logic storage.
Legacy Automation Systems
Widely used in older SLC 500 installations still operating in industrial plants.
Product Advantages
| Advantage | Description |
|---|---|
| Non-volatile Storage | Retains program without power |
| Reliable Backup Function | Protects against data loss |
| Simple Installation | Plug-in module design |
| Compatible with SLC Systems | Works with SLC 5/01 and 5/02 |
| Industrial Durability | Stable in harsh environments |
| Fast Recovery Capability | Reduces downtime |
| No Battery Dependency | EEPROM-based storage |
| Compact Size | Easy integration |
Recommended Models from Same Series or Related Series
| Model | Product Type | Main Function | Application | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 1747-M0 | Memory Module | Basic EEPROM backup | Small SLC systems | ~5 × 2.5 × 2.5 cm | ~0.10 kg |
| 1747-M1 | EEPROM Module | Program storage | SLC 5/01–5/02 | ~5 × 2.5 × 2.5 cm | ~0.11 kg |
| 1747-M2 | EEPROM Module | Larger memory backup | Expanded systems | ~5 × 2.5 × 2.5 cm | ~0.11 kg |
| 1747-M13 | Flash module | Extended memory support | SLC 5/04 systems | ~6 × 3 × 2 cm | ~0.15 kg |
| 1747-BA | Battery module | Memory retention power | CPU backup system | ~3 × 2 × 1 cm | ~0.02 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 | 25 × 17 × 6 cm | 0.45 kg |
| 1747-L542 | CPU Module | High-performance CPU | Distributed systems | 25 × 16.6 × 5.9 cm | 0.40 kg |
| 1747-L551 | CPU Module | Ethernet-enabled CPU | Network systems | 25 × 16.5 × 5.6 cm | 0.42 kg |
| 1756-EN2TR | Ethernet Module | Dual Ethernet/IP | Industrial networking | 14 × 11 × 8 cm | 0.45 kg |
| 1769-L33ER | Compact PLC | Built-in Ethernet | Machine automation | 18 × 12 × 9 cm | 0.92 kg |
System Role in Industrial Automation
The 1747-M1 serves as a program storage and backup module in SLC 500 systems.
It ensures that PLC logic and configuration data are safely preserved during power loss or controller replacement.
It is especially important in older industrial systems where reliable program retention is required without continuous battery dependence.
Installation and Maintenance Characteristics
The module is installed directly into the controller or designated memory slot.
No programming configuration is required for basic operation.
Maintenance involves simple replacement if the module fails or reaches end of life.
Its solid-state EEPROM design reduces maintenance requirements compared to battery-based storage systems.
Industrial Reliability
The 1747-M1 is widely used in industrial environments due to its simplicity and strong data retention capability.
It remains a critical component in legacy SLC 500 systems still operating in factories worldwide.
Its durability and non-volatile storage make it suitable for long-term automation stability.
Summary
The Allen Bradley 1747-M1 is an EEPROM memory module designed for SLC 500 PLC systems.
It provides reliable 1K word program storage, ensuring safe backup and recovery of industrial control logic.
Its simplicity, durability, and compatibility make it an essential component in legacy automation systems requiring stable program retention.