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- Allen Bradley
- 1769-BA
- CompactLogix I/O Module
- USA
- 26.4 mm × 14.7 mm × 10 mm
- 0.13kg
- Xiamen, China
- New & In Stock
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Technical Report: 1769-BA Battery Backup Module
1. Product Overview
The 1769-BA is a compact industrial battery backup module designed for Compact I/O control systems. Its main function is to provide backup power to the PLC memory system, ensuring that program data, configuration parameters, and real-time clock information are retained during power loss.
This module is not used for signal processing or communication. Instead, it is a critical support component for system data protection and operational continuity in industrial automation environments.
It is widely used in PLC systems where unexpected power interruption could cause production downtime or data loss.
2. Brand and Series Information
Brand: Allen-Bradley
Series: 1769 Compact I/O Series
Product Family: Power Backup / Battery Modules
Module Type: 3V Lithium Battery Assembly for PLC Memory Backup
3. Product Function Description
The 1769-BA provides backup energy for PLC internal memory and system timekeeping.
Main functions include:
- Retaining PLC program memory during power loss
- Maintaining system real-time clock accuracy
- Preventing data corruption in volatile memory
- Supporting safe shutdown and restart processes
- Providing stable backup voltage for control system components
It is typically installed inside Compact I/O chassis systems and operates automatically without user intervention.
4. Technical Parameters
Electrical Specifications
| Parameter | Value |
|---|---|
| Nominal Voltage | 3 V DC |
| Battery Type | Lithium non-rechargeable |
| Capacity | ~850 mAh (typical) |
| Isolation Voltage | 30 V continuous |
| Operating Power Role | Memory backup only |
| Backplane Interaction | Low current standby support |
Mechanical Specifications
| Parameter | Value |
|---|---|
| Dimensions | 26.4 mm × 14.7 mm × 10 mm (battery cell level) |
| Module Envelope Size | 118 mm × 87 mm × 50 mm (installed module form factor) |
| Weight | 0.06 kg – 0.13 kg |
| Mounting Type | Plug-in chassis installation |
| Enclosure Type | Open industrial module housing |
Environmental Conditions
| Parameter | Value |
|---|---|
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -45°C to 85°C |
| Humidity | 5% – 95% non-condensing |
| Shelf Life | Up to ~5 years typical operation |
| Industrial Resistance | Vibration and shock rated for control panels |
5. Product Advantages
1. Reliable Memory Protection
Ensures PLC programs and system configuration are not lost during unexpected power outages.
2. Simple Replacement Design
Plug-in structure allows quick replacement without complex wiring or configuration changes.
3. Stable Industrial Performance
Designed for continuous operation in harsh environments such as vibration, temperature fluctuation, and electrical noise.
4. Long Service Life
Lithium-based chemistry provides multi-year operational stability under standard industrial conditions.
5. Low Maintenance Requirement
No charging or active maintenance required during normal operation.
6. System Continuity Assurance
Reduces downtime risk by preserving system state information during interruptions.
6. Application Areas
The 1769-BA is widely used in:
- Manufacturing automation systems
- Packaging production lines
- Process control plants (chemical, food, pharmaceutical)
- PLC-based machine control systems
- Industrial equipment requiring data retention
- Remote or unmanned automation stations
- Systems with frequent power fluctuations
It is especially critical in applications where loss of PLC memory would cause production restart delays or configuration recovery issues.
7. Recommended Models (Same Series / Related Modules)
| Model | Type | Key Parameters | Application |
|---|---|---|---|
| 1769-L33ER | PLC Controller | Integrated Ethernet/IP CPU | Machine automation |
| 1769-L36ERM | PLC Controller | High-speed processor, motion control support | Advanced automation systems |
| 1769-IF8 | Analog Input Module | 8-channel analog signal input | Process monitoring |
| 1769-OF2 | Analog Output Module | 2-channel analog output | Control signal output |
| 1769-AENTR | Ethernet Adapter Module | Dual-port EtherNet/IP communication | Distributed I/O networking |
8. Other Popular Models (Same Brand – Widely Used)
| Model | Type | Key Parameters | Application |
|---|---|---|---|
| 1769-SDN | DeviceNet Scanner | Master network control module | Fieldbus integration |
| 1769-ADN | DeviceNet Adapter | Remote I/O communication module | Distributed systems |
| 1769-ASCII | Serial Communication Module | Dual-port ASCII serial interface | Barcode/printer systems |
| 1769-ARM | Address Reserve Module | Slot reservation utility module | System configuration stability |
| 1769-PA4 | Power Supply Module | AC input power module | Rack power distribution |
9. Summary
The 1769-BA is a critical support module within Compact I/O systems, designed to ensure data integrity and system reliability during power interruptions. While it does not participate in control logic or signal processing, its role in preserving PLC memory makes it essential for stable industrial operation.
Its strengths lie in simplicity, reliability, long operational life, and its ability to protect automation systems from data loss and unexpected downtime.