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Yokogawa S9883FA CPU Battery

Yokogawa S9883FA CPU Battery

Configured for volatile memory maintenance in Yokogawa RTU and controller CPU modules, the Yokogawa S9883FA (S9883FA Battery Component) provides direct physical execution of long-term data retention and clock synchronization during...

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Availability: Low stock: 99 left

SKU: S9883FA
Vendor: Yokogawa
Category: CPU Battery
Related Series:

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Configured for volatile memory maintenance in Yokogawa RTU and controller CPU modules, the Yokogawa S9883FA (S9883FA Battery Component) provides direct physical execution of long-term data retention and clock synchronization during power loss events.

Hardware Specifications

Parameter Specification
Model S9883FA
Brand Yokogawa
Origin Japan
Weight 0.1 kg
Dimensions Standard button/cell pack format
Operating Temp -20 deg C to +60 deg C
Power Consumption Not applicable (Primary battery)
Voltage Output Standard lithium chemistry voltage
Application CPU board memory backup

Memory Backup and Volatile Data Retention

The S9883FA serves as the primary energy source for maintaining the CMOS/RAM status of the CPU module when the main system power is removed. This ensures the persistence of critical system configuration parameters, diagnostic logs, and Real-Time Clock (RTC) tracking. The high-energy-density lithium chemistry is selected to provide a low self-discharge rate, optimizing the lifespan of the battery within the industrial rack-mounted control station. Proper installation maintains the integrity of internal logic states, preventing the need for manual program reloading upon system restart.

Frequently Asked Questions (FAQ)

Q: What is the estimated operational life of the S9883FA battery?

A: The service life depends on the total duration of system power-off states; however, under normal operating conditions where the controller is powered, the battery is designed for several years of shelf and standby life.

Q: Is the battery hot-swappable while the system is under power?

A: Yes, in most Yokogawa controller architectures, the battery can be replaced while the system is powered to avoid loss of data; verify the specific CPU module manual for the exact procedure to ensure the backup circuit is engaged during replacement.

Field Installation Guidelines

  1. Power on the system to ensure the CPU is running from the main power rail before removing the old battery to maintain memory retention.
  2. Locate the battery compartment on the CPU module front or side panel; use care to avoid touching surrounding components.
  3. Remove the depleted S9883FA cell and immediately insert the new unit, observing correct polarity (+/- markings).
  4. Verify the battery low-voltage alarm or indicator clears on the controller interface after installation.
  5. Dispose of the used lithium battery according to local industrial hazardous waste and environmental regulations.