OVERVIEW

Official designation: Allen-Bradley 1747-BA (SLC 500, Lithium Battery)

The 1747-BA is a 3-volt lithium battery designed to provide essential volatile memory backup for SLC 500 processors (including 5/01, 5/02, 5/03, 5/04, 5/05) during system power failures.

KEY SPECS SUMMARY

Power: 3 V DC, Lithium (Non-rechargeable)

Interfaces / Ports: Two-pin connector

Indicators: Processor battery LED

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 5/01 through SLC 5/05

Limit: Refer to the latest manufacturer manual.

Lifecycle: Active replacement part

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the nominal voltage and chemical composition of the 1747-BA battery?

A: It is a 3 V DC lithium battery, typically employing Lithium-Thionyl Chloride (Li-SOCl2).

Wiring & Installation:

Q: What is the critical procedure for replacing the 1747-BA battery in an SLC 500 system?

A: The battery must be replaced while the processor power is still applied to maintain memory.

Troubleshooting & Compatibility:

Q: What is the meaning of a continuous Battery Low LED on a compatible SLC 500 processor?

A: The LED indicates the installed 1747-BA battery voltage is insufficient and requires immediate replacement.

Replacement & Upgrades:

Q: Does the 1747-BA battery provide backup for controllers utilizing non-volatile flash memory?

A: No, the battery only supports the volatile RAM memory in the SLC 500 processors.