In the lineup of computing cores for industrial distributed control systems (DCS), the ABB GJR5253000R0160 (commonly designated as 07KT97C) stands as the “core brain” of the ABB Advant OCS Open Control System. As the Controller 31 basic unit, it takes on the role of the central processing unit in DCS, overseeing all critical tasks of the entire automation system—including complex data acquisition, logic operation scheduling, and collaborative equipment control.

Equipped with a high-performance industrial-grade processor and a real-time operating system, this module natively supports multi-protocol communication interfaces such as Modbus TCP/IP and Profinet. It seamlessly integrates into all automation architectures, from local I/O stations to plant-wide supervision systems, eliminating the tedious work of additional protocol conversion. Its modular design delivers exceptional I/O scalability, allowing flexible point configuration based on application needs across different industries, free from the constraints of fixed architectures. Tailored for the complex conditions of industrial sites, it features a stabilized design with a wide operating temperature range of -10°C to +55°C and an IP20 protection rating, enabling continuous and stable operation even in dusty, slightly vibrating working environments. It is widely used in high-reliability industries such as power, chemical engineering and machinery manufacturing.

More importantly, it supports hot-standby redundancy configuration, enabling bumpless transfer in the event of a controller failure and minimizing system downtime from the source. As a key component of the ABB Advant OCS platform, it builds a highly reliable foundation for the entire industrial automation system through efficient task scheduling and precise timing control.

High reliability and strong scalability are the two most prominent highlights of this core control module, and the key reasons for its status as the first choice for complex industrial process control. Its real-time multi-tasking operating system enables deterministic control cycles, delivering precise timing for critical processes such as PID closed-loop regulation and sequential batch operations. Isn’t this precise control of timing the most core requirement for complex process control?

The module supports hot-swapping and redundancy configuration, allowing faulty module replacement during normal system operation. The automatic failover function minimizes unplanned downtime to the extreme—an invaluable feature for enterprises requiring 24/7 continuous production, as it directly reduces costs and boosts efficiency. It also integrates comprehensive diagnostic functions, and with panel status LED indicators and dedicated software tools, it provides real-time monitoring of processor operation, memory integrity and communication link status, offering intuitive criteria for predictive maintenance.

It also boasts full compatibility with mainstream industrial network protocols for seamless integration into existing automation architectures, and efficient collaboration with ABB Advant Station operator stations to complete the full process of data visualization, alarm management and historical trending. The wide power input range (24V DC to 230V AC) adapts to power conditions across different industrial sites, eliminating the need for additional power conversion components. The robust mechanical structure and industrial-grade components make it resistant to on-site vibration, humidity and dust, ensuring stable long-term operation. In addition, it is compliant with the IEC 61131-3 programming environment, allowing engineers to flexibly build control strategies based on process requirements—reducing programming learning costs and effectively protecting enterprises’ software investments.

This core control module is widely used in various process industries with high requirements for reliability and control precision. With its powerful computing power and scheduling capabilities, it serves as the core computing carrier for automation systems across multiple sectors. In the oil and gas industry, it acts as the core of DCS, controlling the operation of distillation columns and reactor feed systems, while executing the logic of safety instrumented functions to safeguard production safety. In power generation systems, it coordinates boiler combustion control, turbine governor systems and emission monitoring, making power generation more efficient and compliant. In the chemical industry, it manages batch reactor temperature profiles, pressure cascades and the full scheduling of recipe-based production processes to ensure product quality consistency.

In pulp and paper production, it precisely controls the operation sequence of multi-stage digesters and paper machine speed synchronization, streamlining the papermaking process. Water treatment plants rely on it for the full-process control of water clarification, filtration, chemical dosing and disinfection to ensure effluent water quality. Beyond this, it also optimizes equipment operation efficiency in rail transit, mineral processing, food and beverage industries through high-precision logic control and efficient communication integration, making the entire production and operation process more seamless.

Matched with the GJR5253000R0160, a complete distributed control system can be built. ABB’s compatible products in the same ecosystem cover control, I/O expansion and communication in full: PM891K02 3BSE053242R1 (AC 800M series controller) with enhanced processing performance for modern DCS applications; GJR5252100R0101 07KT94 (Advant Controller 31 basic unit of the same series) designed for medium-scale control scenarios; GJR5250800R0202 07DO90-S (digital output module) to expand the actuation capability of the core module; GJR5250900R0202 07DI90-S (digital input module) dedicated to on-site switch signal acquisition, forming a signal closed loop with the core unit; GJR5251000R0303 V07KP90 RCOM (communication module) to further enhance the network interface capacity of the core module; GJR5251500R1101 07MK92 (communication processor for serial data exchange) to meet the needs of on-site serial communication.

Before installation, confirm that the temperature, humidity and protection conditions in the control cabinet meet the product’s operating requirements. At the same time, check the fixing stability of the DIN rail and ensure standard equipment grounding. For wiring, select cables of the corresponding cross-section in strict accordance with the product manual, and verify the polarity during wiring to avoid hardware damage caused by reverse connection.

Daily maintenance focuses on ensuring efficient heat dissipation and reliable wiring. It is recommended to regularly clean the module’s cooling paths to prevent dust accumulation from affecting heat dissipation efficiency; check and fasten the wiring terminals every six months to avoid loose connections caused by long-term vibration in industrial sites. Real-time monitoring of the module’s operating indicator status is available via ABB’s dedicated diagnostic tools, with prompt replacement of abnormally operating components. For redundant systems, regularly test the switchover function to ensure bumpless transfer in the event of a fault.

ABB provides a 12-month official quality warranty for the GJR5253000R0160, with the entire production process complying with the ISO 9001 quality management system. Leveraging ABB’s global technical support network, users gain access to professional services throughout the project lifecycle, including installation guidance, fault diagnosis and spare parts supply—providing a solid guarantee for the long-term stable operation of the equipment.