ABB 07KR51-HSB | Redundant Hot Standby Central Unit

The ABB 07KR51-HSB is a high-performance central unit from the 50 Series, designed for use in demanding industrial environments. Featuring redundancy firmware, it supports hot standby functionality, allowing seamless backup operations in the event of a master central unit failure. With this feature, the 07KR51-HSB ensures continuous process control without interruption.

Key Features of the ABB 07KR51-HSB Central Unit

The 07KR51-HSB central unit operates as a hot standby system for CS31 bus connections. It can take over control of all inputs and outputs if the master central unit shuts down. The backup unit only reads the inputs and executes its own program, with no output assignments. This makes it ideal for critical processes where downtime is not an option.

In the event of an error in the master central unit, the 07KR51-HSB can assume control within a maximum of three cycle times. It is a reliable solution for maintaining system continuity, especially in complex industrial automation systems.

The 07KR51-HSB has been developed according to European EC directives and adheres to national and international standards like IEC 1131-1, IEC 1131-2, and EN61131-2. These certifications ensure the device’s compliance with modern automation requirements.

Technical Specifications

Specification	Value
Model	ABB 07KR51-HSB
Operating Temperature	0°C to +55°C (horizontal)
Storage Temperature	-40°C to +75°C
Transport Temperature	-25°C to +75°C
Humidity	≤75% (average), up to 95% occasionally
Atmospheric Pressure	≥800 hPA (≤ 2000 m)
Vibration Stress	DIN 40050
Shock Stress	CEI68-2-6 test Fc
Protection Rating	IP20 (dustproof, no protection against water)
Compliance	UL V2, CEI68-2-27 test Ea
Input Voltage Range	19.2 to 30 V DC (±20%, +25%)
Mains Voltage	97.75 to 126.5 V AC (50/60 Hz)
Max. Output Voltage	195.5 to 253 V AC (±15%, +10%)

Dimensions and Weight

Dimensions: 330 mm (L) x 150 mm (W) x 100 mm (H)
Weight: 2.5 kg

Product Origin

Manufactured in: Switzerland

Reliable Hot Standby for Continuous Operation

The ABB 07KR51-HSB central unit is an essential component for systems requiring high reliability and redundancy. Its hot standby functionality ensures that critical processes can continue without interruption, even in the event of hardware failure. This makes it an ideal solution for applications where downtime is unacceptable.