Description

Yokogawa S9185FA Battery Pack

Configured for backup memory retention and RTC support in ProSafe-RS safety control platforms, the Yokogawa S9185FA (S9185 Battery Pack) provides direct physical/electrical execution. The assembly integrates a 3.6 V lithium thionyl chloride cell with factory-terminated leads for SSC50D, SSC50S, and SCP461 hardware coupling during external power loss conditions.

Suffix Breakdown & Model Matrix

The supplied documentation identifies the model as a fixed catalog number without published suffix segmentation or option matrix definition.

Hardware Specifications

Parameter	Specification
Model	S9185FA
Brand	Yokogawa
Product Type	Battery Pack
Cell Model	ER6V
Nominal Voltage	3.6 VDC
Nominal Capacity	Approx. 5000 mAh
Compatible Systems	SSC50D, SSC50S, SCP461
Connection Type	Pre-terminated lead and connector assembly
Dimensions	14.5 mm x 50.5 mm
Weight	Approx. 0.02 kg
Operating Temp	-20 degC to +60 degC
Storage Temp	-20 degC to +40 degC
Recommended Replacement Interval	3 years at 30 degC ambient or lower
Power Consumption	Passive backup device; no active load consumption specification published
Origin	Japan

Channel Isolation and DCS Backup Retention Characteristics

The S9185FA battery assembly operates as an isolated backup supply source for volatile memory retention and RTC continuity within Yokogawa ProSafe-RS architectures. The lithium thionyl chloride chemistry provides low annual self-discharge characteristics suitable for long-duration standby installation inside DCS and SIS control cabinets.

The battery connector arrangement is mechanically keyed for direct installation into supported processor and safety station hardware. No field charging circuitry is required because the assembly is designed exclusively for primary-cell operation. Installation into energized hardware should follow host system maintenance procedures to avoid transient memory interruption during replacement cycles.

Frequently Asked Questions

Q: Does the S9185FA support hot replacement during controller operation?
A: The battery replacement procedure depends on the host SSC50D, SSC50S, or SCP461 maintenance state. Replacement under energized conditions should follow Yokogawa maintenance instructions to prevent memory retention interruption.

Q: Is the S9185FA rechargeable?
A: No. The assembly uses a primary lithium thionyl chloride chemistry and is not designed for recharge operation.

Q: What electrical function does the battery provide inside the control system?
A: The battery maintains backup power for volatile memory retention and RTC continuity during shutdown, maintenance isolation, or external power loss conditions.

Field Installation Guidelines

• Verify connector orientation before insertion into the processor or safety station battery header.
• Do not short-circuit the battery leads during handling or transport.
• Route the battery cable separately from high-current AC wiring to reduce conducted electrical interference exposure.
• Replace the assembly only with the specified ER6V-based Yokogawa-compatible battery configuration.
• Store unused units in low-humidity conditions within the specified storage temperature range.
• Dispose of depleted lithium cells according to regional industrial hazardous material handling regulations.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems