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The 1747-BA is a specialized lithium battery assembly designed for use with SLC 5/01, 5/02, 5/03, 5/04, and 5/05 processors. This model features a polarized two-pin connector that plugs directly into the battery port of the controller, providing a dedicated power source to back up the CMOS RAM and the internal real-time clock.
Polarized Plug-in Connector
Long-term RAM Backup
High-density Lithium Chemistry
Engineered with Lithium Manganese Dioxide (Li-MnO2) chemistry, the 1747-BA offers a nominal voltage of 3.0V DC and a capacity of 0.85 Ah. It provides reliable long-term memory backup for the user program and data during periods when the controller is powered down. The battery assembly is designed to operate within a temperature range of 0 to 60 °C and can be stored at temperatures up to 85 °C without degrading its backup capability.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Allen-Bradley 1747-BA LITHIUM BATTERY ASSEMBLY Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Automotive Assembly
Used to back up critical production parameters and machine setup data during power cycles. It ensures the processor retains the user program to prevent costly restarts.
Food Processing
Maintains recipe integrity and real-time clock data in batch processing and packaging machinery. It prevents the loss of process variables during facility maintenance or outages.
Water Infrastructure
Essential for unmanned operations in remote pumping stations to provide reliable memory backup. It supports the CMOS RAM to preserve historical flow data and logic sequences.
Material Handling
Safeguards operational logic and I/O status information in warehouse conveyor systems. The lithium chemistry provides a high-density power source for long-term data retention.
Pharmaceutical Manufacturing
Ensures compliance by maintaining continuous data logging and audit trail information in validated systems. It provides backup power to ensure accurate time-stamping of production events.
Mining Operations
Protects complex interlocking logic and safety parameters from volatile memory loss in heavy industrial panels. The polarized connector ensures secure installation in high-vibration environments.
The 1747-BA is supplied as a lithium battery for use with SLC 500 series processors, providing backup power to volatile memory circuits. It is designed to maintain stored user program and data when system power is removed, supporting retention of controller information and system configuration. The battery assembly operates as an internal backup power source and is specified for use within defined temperature limits and electrical characteristics of the controller system.
What is the primary purpose of the Allen-Bradley 1747-BA battery in SLC 500 controllers?
The 1747-BA lithium battery is used to back up the CMOS RAM in SLC 5/01, 5/02, 5/03, 5/04, and 5/05 processors. It ensures that the user program and data are retained when power is removed from the controller.
How do I know when the Allen-Bradley 1747-BA battery needs to be replaced?
You must replace the 1747-BA battery when the "BATT" LED on the front of the processor is illuminated. This indicator warns that the battery voltage has fallen below a threshold and may no longer support the memory.
What are the electrical specifications and capacity of the 1747-BA battery assembly?
The 1747-BA is a 3.0V DC Lithium Manganese Dioxide battery with a nominal capacity of 0.85 Ah. It is designed as a specialized assembly with a polarized connector to ensure correct installation into the processor's battery port.
What is the recommended procedure for replacing the 1747-BA without losing the program?
To avoid losing the user program, replace the 1747-BA battery while the controller is powered. If power is off, the processor has a capacitor that provides a very short period of backup power (typically 30 minutes) during the swap.
What safety precautions must be followed when handling the Allen-Bradley 1747-BA?
Do not recharge, disassemble, heat above 100°C (212°F), or incinerate the 1747-BA battery. Official safety data warns that improper handling may lead to fire, explosion, or severe burn hazards.
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