Honeywell 51197593-100 Lithium Battery

The Honeywell 51197593-100, also cataloged as the 51197593-100 Battery, operates as a dedicated hardware component for memory and configuration backup within Honeywell control system platforms.

Hardware Specifications

Process Control and DCS Characteristics

• 4-20 mA HART loop protocol: The battery ensures the retention of volatile memory parameters for analog input/output configuration, maintaining valid scaling and calibration data for HART loops during system power cycles.
• FOUNDATION Fieldbus / Profibus PA connectivity: The module supports the persistence of fieldbus link master configurations and network addresses during power outages, reducing initialization time upon system restoration.
• Channel-to-channel isolation: The internal design of the battery-backed memory circuit utilizes low-leakage paths to ensure that the backup potential remains isolated from the primary system bus, protecting the circuit from fault-induced surges.
• Cold junction compensation (CJC): The retention of memory data ensures that thermocouple linearization tables and CJC offsets remain resident in the controller during maintenance or power loss, preventing the loss of measurement accuracy.

Frequently Asked Questions

Q: What is the primary function of this battery module?

A: It provides backup power to volatile RAM in control modules, ensuring that runtime configurations, setpoints, and diagnostic data are preserved during primary power loss.

Q: Is this battery hot-swappable?

A: Refer to the specific control module documentation. While the battery is designed for field replacement, it must be performed according to the safety procedures of the host hardware to avoid clearing memory or inducing module reset.

Field Installation Guidelines

• Mounting: Insert the battery into the designated battery clip or holder on the control module PCB. Ensure the orientation is correct to maintain proper polarity with the terminal connectors.
• Grounding: While the battery circuit is internally isolated, ensure the control module chassis is properly bonded to the cabinet protective earth (PE) bus to prevent electrostatic discharge (ESD) during battery handling.
• Wiring: Verify that the connector is fully seated to ensure a low-resistance path. Do not short the battery terminals; ensure the connector remains free of debris and oxidation during installation.