Product Details

The Yokogawa S9185FA is a high-capacity Lithium Thionyl Chloride (Li-SOCl2) battery pack specifically engineered for the CENTUM CS 3000 and CS 1000 Distributed Control Systems (DCS). This component provides the critical backup voltage required to preserve volatile memory and maintain system clock operations during primary power outages. We supply this product as 100% brand new and original, ensuring maximum shelf life and field reliability for your automation assets.

Product Overview

The S9185FA ensures data integrity by powering the CMOS RAM and real-time clock (RTC) within Yokogawa control modules when the main power supply fails. Without this 3.6V backup source, a system reboot following a power loss could result in the total loss of configuration parameters and historical logs. Given its stable discharge voltage and low self-discharge rate, the S9185FA serves as the primary safeguard for system continuity in safety-critical process industries.

Technical Specifications

Engineering Advantages

• Extended Data Integrity: The high energy density of the Li-SOCl2 chemistry provides a reliable voltage floor throughout the battery's lifespan. This prevents memory corruption that typically occurs when backup voltages sag during long-term storage or extended power failures.

• Superior Thermal Stability: The S9185FA operates effectively from –20°C to +60°C. This wide range ensures that control modules located in non-climate-controlled cabinets or extreme environments maintain their memory retention capabilities without premature battery degradation.

• Low Self-Discharge Rates: The chemical composition limits self-discharge to less than 1% per year at room temperature. This provides a 10-year shelf life, allowing plant managers to stock replacement units without fear of capacity loss before installation.

• Precise Mechanical Fit: Designed specifically for Yokogawa DCS hardware, the S9185FA utilizes the correct connector and lead length to prevent installation errors or loose connections in high-vibration industrial settings.

• Safety and Compliance: The cell includes safety venting and internal protection to prevent ruptures during extreme conditions. It complies with CE and RoHS standards for industrial electronics.

FAQs

How often should I replace the Yokogawa S9185FA battery?

While the battery offers a long shelf life, Yokogawa typically recommends replacement every 3 to 5 years of active service, depending on the frequency of power cycles and the ambient temperature of the control cabinet.

Can I recharge the S9185FA if the system indicates low voltage?

No. The S9185FA is a primary (non-rechargeable) lithium cell. Attempting to charge this battery poses a significant risk of fire or explosion. Always replace a depleted unit with a brand-new, original Yokogawa pack.

Does the DCS provide an alert when the battery is failing?

Yes. Yokogawa CENTUM systems monitor the backup battery voltage. When the voltage drops below a specific threshold, the system triggers a "Battery Low" alarm on the Human Interface Station (HIS), allowing maintenance teams to replace the unit before data loss occurs.

Are there any special handling requirements for this battery?

As a lithium-based product, you must store the S9185FA in a cool, dry place away from direct sunlight. Do not short-circuit the leads or expose the pack to temperatures exceeding 100°C, as this will damage the internal chemistry and safety seals.