Allen-Bradley 1756-BATA Battery Assembly

Configured for volatile memory retention in ControlLogix controller modules, the Allen-Bradley 1756-BATA (1756-BATA Battery Assembly) provides direct physical/electrical execution of long-term power backup for RAM-based program and data storage.

Hardware Specifications

Firmware Flash Compatibility and Memory Retention

The 1756-BATA serves as the primary energy storage source for maintaining user program memory and real-time clock data when the main ControlLogix chassis power is removed. The module utilizes high-capacity lithium chemistry to ensure extended shelf life and operational discharge intervals. Users must verify firmware flash compatibility of the specific controller model regarding its low-battery threshold trigger settings. During chassis power cycles, the battery ensures the backplane bus communication velocity remains secondary to the integrity of the memory retention state, preventing loss of configured project parameters.

Frequently Asked Questions

Q: Does the 1756-BATA support hot-swapping during processor operation?

A: Yes. The 1756-BATA is designed for replacement while the controller is energized. The internal capacitors in the controller module provide sufficient voltage hold-up to maintain memory retention during the brief interval required to swap the battery assembly.

Q: How should the battery be disposed of after reaching its end-of-life?

A: The module contains lithium chemistry and must be disposed of in accordance with local environmental regulations regarding hazardous industrial waste. Do not incinerate or puncture the battery housing.

Field Installation Guidelines

1. Locate the battery compartment on the front of the ControlLogix controller module.
2. Ensure the replacement 1756-BATA is within its designated service life and has not exceeded the manufacturer's recommended shelf life before installation.
3. Align the connector keying on the battery assembly with the mating receptacle on the controller to prevent incorrect polarity connection.
4. Press the battery assembly firmly into the compartment until the locking mechanism engages.
5. Verify that the "Battery Low" diagnostic status bit in the controller configuration software clears after installation.
6. Record the date of installation on the provided label to facilitate scheduled maintenance and replacement cycles.