The Yokogawa S9400UK is an industrial battery pack used in Yokogawa control systems to provide stable backup power for memory retention, module protection, and safe shutdown sequencing. It is designed for long‑life operation within CENTUM VP and ProSafe‑RS architectures.
Hardware Specifications
Parameter
Specification
Model
S9400UK
Brand
Yokogawa
Origin
Japan
Weight
Lightweight battery pack; no numeric value specified
Shipping Weight
Standard Yokogawa accessory packaging; no numeric value specified
Dimensions
Compact battery‑pack form factor; no numeric value specified
Operating Temp
Control‑room rated thermal range; no numeric value specified
Power Consumption
Passive backup battery; no electrical draw until engaged
Module Type
Battery Pack
Function
Backup power for memory retention and module protection
Battery Type
Industrial‑grade long‑life backup battery
Mounting
Panel‑mount or module‑mount depending on system architecture
Environmental Behavior
Non‑condensing humidity operation
Compatibility
CENTUM VP / ProSafe‑RS modules requiring backup power
Product Type
Battery Packs
Functional Description
The S9400UK battery pack provides backup power to Yokogawa control modules, ensuring memory retention and stable operation during power interruptions. It supports safe shutdown sequencing and prevents data loss in critical control environments. The pack integrates directly with designated Yokogawa modules, supplying regulated backup voltage when primary power is unavailable. Its industrial‑grade construction ensures long‑term reliability in continuous‑duty applications.
Frequently Asked Questions
Q: What is the purpose of the S9400UK battery pack? It provides backup power for memory retention and safe shutdown of Yokogawa control modules.
Q: Can the battery pack be replaced while the system is energized? No. Battery replacement should be performed only when the associated module or segment is de‑energized.
Q: Is the S9400UK compatible with both CENTUM VP and ProSafe‑RS? Yes. It is used across multiple Yokogawa control platforms that require backup battery support.
Field Installation Guidelines
Verify correct polarity before connecting the battery pack.
Ensure connectors are fully seated to maintain stable backup voltage.
Replace battery packs only when the system is de‑energized.
Inspect battery casing for swelling or damage before installation.
Maintain proper environmental conditions to maximize battery lifespan.
