ABB 07KT97 GJR5253000R4270 AC31 S90 PLC Central Controller Unit

Technical Specifications

Model: 07KT97

Part Number: GJR5253000R4270

Brand: ABB

Product Type: AC31 S90 central PLC controller unit

Matching System: ABB AC31 automation control system

Power Supply: 24VDC

Communication Interface: Ethernet TCP/IP, Modbus‑TCP, CS31 system bus

Program Standard: IEC61131‑3 international programming standard

Memory: Flash program memory, battery‑backed retention memory

Expansion Mode: Support external expansion I/O modules

Installation Method: DIN‑rail mounting

Operating Temperature: 0℃ ~ +55℃, non‑condensing

Protection Class: IP20

Weight: 0.85kg

Dimension: 240mm ×140mm ×85mm

Compatible System: Manufacturing production line, power plant auxiliary control, process automation equipment

Core Function: As core CPU of AC31 S90 PLC system, execute IEC61131‑3 user control program, process I/O signal data, support Ethernet and CS31 bus communication, realize logic operation, data processing and field equipment automatic control.

Product Details

The 07KT97 GJR5253000R4270 is central controller CPU unit for ABB AC31 S90 PLC system.

This 07KT97 controller serves as the core processing unit of AC31 automation system, it does not come with built‑in I/O channels, needs to cooperate with external expansion I/O modules for signal collection and output. It follows IEC61131‑3 standard, supports multiple programming languages for industrial control project development.

It cyclically executes user logic programs, processes signals from expansion I/O modules, completes logic judgment and arithmetic calculation, and sends control commands to field actuators.

Equipped with Ethernet port supporting Modbus‑TCP protocol, it can realize high‑speed data interaction with upper computer, HMI and SCADA system; CS31 bus is used for connecting remote I/O stations. Battery‑backed memory keeps important process data after power‑off.

Front‑panel LED indicators display power, running status and fault alarm information, convenient for on‑site inspection and fault diagnosis.

Adopts standard DIN‑rail installation, flexible for cabinet layout and equipment retrofit.

Widely applied in legacy AC31 system renovation, power auxiliary control and manufacturing industry maintenance projects.

It is important spare hardware for PLC system overhaul, program debugging and defective 07KT97 controller replacement.