Allen-Bradley 1756-BATA ControlLogix Battery Assembly Module

The Allen-Bradley 1756-BATA, also cataloged as the 1756-BATA ControlLogix Battery Assembly, operates as a dedicated hardware component for controller memory retention support within ControlLogix PLC systems when primary power is removed. The assembly interfaces with the 1756-BATM external battery module to sustain volatile memory state across power interruption events.

Suffix Breakdown & Model Matrix

No formal suffix segmentation is defined for the 1756-BATA assembly.

• 1756-BATA: ControlLogix lithium battery assembly for external battery module 1756-BATM

Hardware Specifications

ControlLogix Memory Retention Power Path Architecture (1756 Battery Backup Behavior)

The 1756-BATA implements a passive DC energy reservoir structure based on dual D-cell lithium chemistry, delivering regulated standby voltage support to the 1756-BATM external battery module. The battery assembly does not participate in logic execution or bus communication; its function is limited to sustaining memory retention circuits within ControlLogix controller hardware during main supply loss.

Energy delivery is governed by internal chemical discharge characteristics of lithium primary cells, with output stability defined by load demand from the attached battery module rather than active regulation circuitry. No switching or conversion stage is present within the assembly.

System-level memory hold-up performance is determined by combined behavior of battery capacity (19 Ah nominal) and controller memory consumption profile under outage conditions. Electrical interface integrity depends on correct mechanical seating within the 1756-BATM module battery compartment, ensuring low-resistance contact paths for uninterrupted standby supply transfer.

Frequently Asked Questions (FAQ)

Q: Does the 1756-BATA directly power the ControlLogix processor?
A: No. The assembly supplies standby energy to the 1756-BATM module, which in turn maintains controller memory circuits during power loss.

Q: Can the battery assembly be used without the 1756-BATM module?
A: No. The 1756-BATA is not a standalone power source and requires the 1756-BATM interface module for operation.

Q: What happens when lithium cells reach end-of-life?
A: Output voltage decay leads to loss of memory retention capability in the connected controller system during power interruption events.

Field Installation Guidelines

• Install battery assembly only into compatible 1756-BATM module receptacle; do not use as standalone component.

• Ensure correct polarity alignment during insertion to maintain low-resistance electrical contact.

• Avoid short-circuit exposure during handling of lithium D-cell assemblies.

• Do not open or mechanically deform battery enclosure due to internal chemical hazard risk.

• Verify secure mechanical locking within module housing before system energization.

• Follow IEC lithium handling procedures for storage, transport, and replacement operations.