Yokogawa S9649FA Industrial Backup Battery Pack

The Yokogawa S9649FA serves as the primary S9649FA Dedicated Battery Pack utilized to execute data retention and register backup tasks across Yokogawa control system platforms. The hardware functions as a rechargeable energy storage node designed to supply volatile memory arrays with steady continuous voltage during main system power interruptions, preventing configuration database loss.

Hardware Specifications

Yokogawa DCS Network Interface & Signal Processing

• 4-20 mA HART Loop Protocol Database Retention: The battery pack directly preserves the local memory register caches hosting active configuration maps. During utility drops, it protects the software mapping tables that track multi-variable parameters from field-level 4-20 mA HART loop protocol transmitters, ensuring the node boots instantly without missing device variables.
• Channel-to-Channel Isolation Parameter Verification: The battery assembly features a fully insulated outer jacket designed to isolate the cell matrix from adjacent logic card frames. This protective boundary ensures that internal electrochemical potentials maintain channel-to-channel isolation distances relative to neighboring backplane lines, preventing transient short-circuits.

Frequently Asked Questions

Q: What are the primary system hazards when attempting to replace the S9649FA battery pack?

A: Disconnecting the battery pack while the primary host processor module is completely powered down will immediately erase all volatile configuration settings, memory logs, and local node address parameters. Always verify the host rack backplane is fully energized before executing cell replacement.

Q: How does the Ni-MH chemistry handle continuous micro-charging states from the backplane?

A: The onboard charging circuitry on the host Yokogawa card manages internal current profiles. It supplies a low-amplitude trickle charge designed to maintain the 2.4 V threshold and 1900 mAh capacity without causing localized thermal degradation or electrolyte outgassing under continuous exposure.