ABB 07KT98 H3 GJR5253100R4278 AC31 PLC Controller Module

The ABB 07KT98 H3 (GJR5253100R4278) is a high‑performance PLC processor module of the ABB AC31 series. It integrates local digital and analog I/O, Ethernet and CS31 fieldbus interfaces, and executes IEC61131‑3 control programs for factory and process automation systems.

This compact DIN‑rail controller supports remote I/O expansion and online program debugging. Original production has been discontinued. It is widely stocked as aftermarket spare parts for packaging machinery, water treatment and old production line renovation projects.

Main Specifications

1. Brand: ABB; Model:07KT98 H3, Part No:GJR5253100R4278; Type:AC31 PLC Processor Module
2. Program Standard:Compliant with IEC61131‑3, supports ladder diagram and structured text programming
3. On‑board I/O:24 digital inputs,16 digital outputs,8 analog inputs and 4 analog outputs
4. Communication Ports:Ethernet TCP/IP and CS31 fieldbus, supporting remote distributed I/O connection
5. Power Supply:24VDC, DIN rail mounting, built‑in watchdog and non‑volatile program memory
6. Operating Temperature:0℃ ~ +55℃, industrial compact modular design
7. Supply Status:Original production discontinued, available as tested surplus or refurbished spare parts

Core Functions

1. Run user IEC61131‑3 control programs to implement logic, timing and closed‑loop regulation.
2. Collect local analog and digital field signals and drive on‑board output channels for on‑site actuators.
3. Connect remote I/O stations via CS31 bus to expand control points for large automation systems.
4. Ethernet interface realizes data exchange with HMI, upper monitoring system and other controllers.
5. Hardware watchdog timer monitors CPU operation and triggers safe reset during system faults.
6. Act as the core processing unit of ABB AC31 distributed automation control system.

Application Scenarios

1. Packaging machines, conveyor systems, water treatment plants and small‑scale process automation lines.
2. Spare controller replacement and daily maintenance of existing ABB AC31 automation racks.
3. Technical renovation and reliability upgrade of aging AC31‑based distributed control systems.
4. On‑site troubleshooting and replacement of failed PLC processors on running production equipment.
5. Spare‑parts stocking for system integrators and industrial automation maintenance contractors.
6. Global aftermarket spare supply for technicians maintaining obsolete ABB AC31 PLC hardware.

FAQ

1. Q:What does H3 stand for in 07KT98 H3?
   A:H3 represents the hardware revision version of the 07KT98 processor with optimized firmware.
2. Q:Can this module work with remote I/O?
   A:Yes, it uses CS31 fieldbus to communicate with remote expansion I/O modules.

3. Q:Is this PLC controller still in original production?
   A:ABB has stopped manufacturing this model, only tested surplus and refurbished spare units are available.