Product Description

The HHR-30HF5G1 is a high-reliability Ni-MH backup battery unit designed for industrial control hardware used in Yokogawa Electric Corporation control platforms, including CENTUM and STARDOM systems.

This battery pack provides secondary power backup for maintaining:

• CPU configuration parameters

• SRAM memory data retention

• Real-time clock (RTC) operation

• Event and diagnostic logs

During power outages or scheduled maintenance shutdowns, the HHR-30HF5G1 prevents loss of critical process logic and reduces system recovery time after restoration of power.

The pack is engineered for industrial cabinet environments, where elevated operating temperatures and continuous trickle charging are common. Its predictable discharge curve and low self-discharge characteristics help ensure long-term reliability in mission-critical automation systems.

Detailed Technical Specifications

Industrial Application Scenarios

The HHR-30HF5G1 is commonly deployed in:

• Power generation control systems

• Petrochemical processing plants

• Water and wastewater treatment facilities

• Remote automation stations

It is typically replaced during 2–3 year preventive maintenance cycles to prevent unexpected data loss and avoid system “cold start” conditions that would require reloading control logic and process parameters.

Frequently Asked Questions

Is the HHR-30HF5G1 hot-swappable?
Yes, in most compatible controllers. Battery replacement can often be performed while the system is powered to maintain memory retention. However, always follow the specific hardware maintenance procedure for the controller model.

How do I know when to replace the battery?
The DCS or CPU module typically generates a battery low alarm on the HMI or status LED indicators. Replacement should be performed immediately when this alarm is triggered or according to scheduled maintenance plans.

Why is Ni-MH used instead of standard lithium batteries?
Ni-MH technology provides stable discharge behavior, better thermal tolerance inside control cabinets, and predictable long-term reliability for continuous industrial operation.