Product Overview

The 1756-BA2 serves as the critical energy backup solution for Allen Bradley ControlLogix 5561, 5562, 5563, and 5564 Series B controllers. This 100% brand new lithium assembly maintains the controller's volatile memory and internal clock during power cycles. By providing a stable 3VDC output with a 1200 mAh capacity, it prevents costly data loss and minimizes system downtime in complex automation environments.

Technical Specifications

This assembly utilizes high-density lithium chemistry to provide long-term shelf life and stable discharge rates under industrial load conditions.

Engineering Advantages

• Data Integrity Protection: The 1756-BA2 preserves the project program and tag values when the chassis loses primary power, ensuring the PLC executes an immediate, error-free cold start upon restoration.

• Plug-and-Play Integration: The assembly features a keyed, polarized connector that prevents reverse-polarity installation, protecting the controller’s internal circuitry from electrical damage.

• Extended Service Life: The 1200 mAh lithium cell offers superior energy density compared to standard alkaline alternatives, reducing the frequency of scheduled maintenance intervals.

• Vibration Resistance: Secure mounting within the controller housing ensures the battery maintains a constant electrical connection even in high-vibration machinery environments.

FAQs

Is the 1756-BA2 compatible with Series A ControlLogix controllers?

No. This battery assembly specifically supports Series B versions of the L6x controllers (such as 1756-L61 Series B). Series A controllers typically utilize different battery form factors or capacitors. Always verify the series letter on your hardware's side label before installation.

How do I know when the 1756-BA2 requires replacement?

The ControlLogix CPU monitors battery voltage levels. When the charge drops below a safe threshold, the "BATT" LED on the front of the PLC module glows red. Additionally, you can monitor the battery status bits within RSLogix 5000/Studio 5000 software to schedule proactive maintenance.

Can I replace the battery while the PLC is powered on?

Yes. You should replace the battery while the controller has power from the chassis backplane. This ensures the internal memory remains energized by the power supply during the swap, eliminating any risk of program loss during the transition.

Does this product come in original packaging?

We supply this 1756-BA2 as a 100% Brand New unit. Every battery undergoes strict quality control to ensure it meets the rated 3V output and 1200 mAh capacity before reaching your facility.