This product page details the genuine Siemens S7-400 backup battery, a critical component for maintaining system integrity in SIMATIC S7-400 PLC systems. This 3.6V lithium battery with 2.3Ah capacity provides reliable backup power to the CPU and memory cards during main power interruptions, ensuring your program and data remain secure in PS 405 and PS 407 power supply units.
Overview of the S7-400 Backup Battery
The Siemens S7-400 backup battery serves as an essential safety component for continuous automation operations. Because it maintains power to the CPU’s memory during voltage dips or complete power failures, it prevents data loss and costly reprogramming, making it a vital spare part for any S7-400 installation.
Key Features and Technical Specifications
This backup battery is engineered for longevity and reliability. Therefore, here are its essential specifications:
- Voltage: 3.6V lithium chemistry for stable long-term performance
- Capacity: 2.3Ah (2300mAh) for extended backup duration
- Compatibility: Designed for PS 405 and PS 407 power supply units (4A, 10A, 20A)
- Battery Type: Lithium thionyl chloride (Li-SOCl₂) for long shelf life
- Operating Life: Typically 2-5 years depending on ambient temperature and usage
- Temperature Range: Wide operating temperature for industrial environments
- Safety: Built-in safety valve and hermetic sealing
- Certification: Original Siemens component guaranteed for compatibility
Compatibility and Installation
This S7-400 backup battery is specifically designed for seamless integration. For example, it is compatible with:
- PS 405 power supply units (4A, 10A, 20A versions)
- PS 407 power supply units (4A, 10A, 20A versions)
- All S7-400 CPU models when used with compatible power supplies
- Memory cards and real-time clock backup
To ensure complete system protection, consider our range of S7-400 spare parts and accessories for comprehensive maintenance.
Why Choose Genuine Siemens Backup Batteries?
Selecting the original S7-400 backup battery provides crucial advantages for system reliability. Firstly, genuine Siemens batteries guarantee perfect electrical compatibility and fit, eliminating the risk of connection issues or damage to expensive PLC components. Secondly, the specified lithium chemistry offers a longer service life and better temperature stability than alternative chemistries. Consequently, you minimize the risk of unexpected system downtime and data loss, protecting your automation investment.
Maintenance and Replacement Guidelines
Proper maintenance of your S7-400 backup battery is essential for system reliability. Most S7-400 systems provide battery monitoring through LED indicators and system diagnostics. We recommend replacing the battery proactively every 2-3 years, or immediately when the system indicates a low battery condition, to prevent unexpected memory loss.
For detailed replacement instructions and safety precautions, refer to the official Siemens S7-400 battery replacement guide.
Protect Your Automation Investment Today
In summary, the genuine Siemens S7-400 backup battery is a small but critical component that ensures the continuous operation of your automation systems. Finally, by keeping this essential spare part in your inventory and following recommended replacement schedules, you safeguard against program loss and maintain the operational integrity of your S7-400 control systems.
