Yokogawa S9185FA Battery Pack

Overview

The Yokogawa S9185FA Battery Pack is an essential industrial power backup component used in Yokogawa automation and control systems, especially in Distributed Control Systems (DCS) and PLC environments such as CS1000, CS3000, and similar controllers. It delivers stable 3.6 V DC output to support uninterrupted memory retention, logic backup, and real-time clock functionality during power interruptions or brown-outs in mission-critical systems. 

Manufactured to meet the demanding requirements of process control facilities, manufacturing plants, and utility infrastructure applications, this primary battery pack ensures that vital automation components remain operational and protected against unexpected power loss. It is commonly installed directly on boards or as a replaceable backup battery in power modules where ongoing data integrity is paramount. 

Battery Construction & Chemistry

The S9185FA battery pack typically uses a lithium thionyl chloride (Li-SOCl₂) or equivalent high-energy chemistry, providing:

• Long shelf life and high energy density suitable for industrial control applications. 

• Wide operating temperature range (such as −20 °C to +60 °C or more), ensuring stable power support under varied environmental conditions. 

• Non-rechargeable design focusing on safety and memory backup reliability. 

This battery technology is chosen for industrial applications because it resists self-discharge better than many alternatives, retains charge for extended durations, and supports long-term backup without frequent replacements. 

Key Functional Benefits

The Yokogawa S9185FA Battery Pack offers several advantages for industrial control systems:

• Reliable Backup Power: Maintains controller memory, parameters, and real-time clocks during power outages. 

• Reduced Downtime Risk: Protects against data loss, system resets, and unscheduled process disruptions. 

• Industrial-Grade Design: Built to withstand vibration and temperature variations common in control cabinets and automation panels. 

• Direct Replacement: Compatible with Yokogawa PLC and DCS battery holders designed for S9185FA specification. 

Typical Industrial Applications

This backup battery pack is critical in automation systems where reliable power retention ensures safety and continuity:

• Process control systems in chemical, oil & gas, power generation, and refining sectors. 

• Distributed Control Systems (DCS) and PLC logic modules requiring memory backup. 

• Manufacturing automation installations where loss of controller data can halt production. 

• Utility and infrastructure automation where continuous system uptime is mandatory. 

By providing stable backup power, the S9185FA plays a key role in minimizing system failures, upholding process integrity, and supporting high-availability control architectures.

FAQ

What is the Yokogawa S9185FA Battery Pack used for?

It is used as a backup battery for Yokogawa DCS/PLC controllers to maintain memory and real-time clock functions during power interruptions. 

What voltage and type does this battery provide?

The S9185FA typically delivers 3.6 V DC and is based on high-energy lithium battery chemistry. 

Does it support harsh environments?

Yes — it is designed to perform reliably across a broad industrial temperature range and under vibration conditions common in control cabinets. 

Call to Action

Request a quote or technical inquiry for the Yokogawa S9185FA Battery Pack to ensure uninterrupted memory backup and reliable power retention for your industrial automation systems.