ABB 07KR51 220VDC Replacement CPU for ABB AC31 Systems

The ABB 07KR51 220VDC Replacement CPU for ABB AC31 Systems is a 40-series central processing unit of the ABB Advant Controller 31 (AC31) PLC family, confirmed by ABB’s official product documentation. It combines a CPU, 8 digital inputs (24 V DC) and 6 relay outputs in one DIN-rail basic unit, and communicates with extension I/O over the CS31 fieldbus at 187.5 kbaud .

Key Specifications:

• Brand: ABB
• Model: 07KR51
• Order Number: 1SBP260511R1001
• Type: PLC Central Processing Unit / Basic Unit
• System: Advant Controller 31 (AC31), 40-series central unit
• Digital Inputs: 8 (24 V DC)
• Relay Outputs: 6
• Supply Voltage: 230 V AC 50/60 Hz
• Fieldbus: CS31, RS-485, 187.5 kbaud, up to 31 interfaces / 500 m
• Ambient Temperature: 0°C to +55°C
• Country of Origin: France

ABB 07KR51 220VDC Replacement CPU for ABB AC31 Systems is the mains-powered control unit for AC31 applications: it runs the user program, reads eight 24 V DC inputs from sensors and switches six relay outputs for loads up to 2 A, all while talking to remote I/O over the CS31 bus. Because it accepts 230 V AC directly, it eliminates a separate 24 V power supply in cabinets where mains is the only available feed.