This Yokogawa battery pack provides backup power for maintaining system memory during power outages. It ensures the retention of configuration data and process parameters in Centum VP controllers. Engineers can install this unit as a direct replacement for depleted batteries. Its compact design fits seamlessly into existing I/O module enclosures. The battery pack delivers reliable performance for continuous plant operations.
Physical Dimensions and Module Configuration
The battery pack measures 3.0 inches in length and 2.5 inches in width. Its housing thickness reaches 0.6 inches for low-profile module mounting. The unit weighs approximately 4.0 ounces for straightforward installation. A polarized connector ensures correct polarity when attaching to the host module. This connector design prevents reverse-connection damage during field replacement.
Battery Chemistry and Capacity Ratings
The pack employs high-quality lithium primary cells for extended service life. It delivers a nominal voltage of 3.6 VDC for consistent memory backup. The total capacity reaches 2400 mAh under standard discharge conditions. This capacity provides approximately 5 years of data retention in normal operation. The lithium chemistry offers stable voltage output throughout its service life.
Connector Interface and Cable Assembly
The unit includes a 2-wire cable with a 4-pin JST connector. This cable extends 6.0 inches from the battery housing for flexible routing. The connector mates directly with Centum VP CPU and I/O module sockets. A locking tab on the connector ensures secure engagement and prevents accidental dislodgment. The cable uses 22 AWG conductors for minimal voltage drop.
Temperature Range and Storage Conditions
The battery operates reliably from -20 to 60 degrees Celsius ambient temperature. Its storage temperature range spans -20 to 45 degrees Celsius for warehouse holding. The unit withstands 95% non-condensing humidity for versatile industrial deployment. These environmental tolerances suit both indoor and protected outdoor installations. The battery maintains its capacity across the entire operating temperature spectrum.
Safety Features and Protection Mechanisms
A built-in fuse protects against short-circuit conditions at the connector terminals. This fuse interrupts excessive currents to prevent overheating or fire risks. The battery includes reverse-polarity protection through the polarized connector design. The housing employs flame-retardant ABS plastic for enhanced safety compliance. These features meet UL and IEC safety requirements for battery-powered equipment.
Compliance and Regulatory Certification
The battery complies with UN38.3 transportation safety regulations for lithium cells. It meets RoHS requirements for restricted substance limitations globally. The unit carries CE marking for sale within European Economic Area markets. This certification simplifies equipment export and regulatory declaration processes. The battery also satisfies IEC 62133 safety standards for portable applications.
Technical Specifications Overview
| Parameter | Detail |
|---|---|
| Model Number | S9129FA |
| Type | Battery Pack (Memory Backup) |
| Chemistry | Lithium primary cell |
| Nominal Voltage | 3.6 VDC |
| Capacity | 2400 mAh |
| Connector | 4-pin JST, polarized |
| Cable Length | 6.0 inches |
| Conductor Size | 22 AWG |
| Dimensions | 3.0 x 2.5 x 0.6 inches |
| Weight | 4.0 oz |
| Operating Temperature | -20 to 60 °C |
| Storage Temperature | -20 to 45 °C |
| Protection | Built-in fuse, reverse polarity |
| Safety Compliance | UL, CE, RoHS, UN38.3 |
Details
| Weight | 0.35 kg |
|---|---|
| Dimensions | 120 × 52 × 125 mm |
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