Description
The ABB 07KT98 (specifically the GJR5253100R4278 / H3 version) is a high-performance central processing unit (CPU) belonging to the Advant Controller 31 (AC31) series. It is designed for complex industrial automation tasks, offering integrated communication interfaces and a robust set of onboard I/O capabilities.
ABB 07KT98 GJR5253100R427807KT98 H3
Product Technical Description
The 07KT98 serves as the “brain” of the AC31 system. It executes the user program, manages data exchange with distributed I/O modules, and handles networking via the integrated CS31 system bus. The “H3” designation typically refers to specific hardware revisions or performance tiers within the 07KT98 family, often associated with memory capacity or processing speed enhancements.
- Integrated I/O: Features a significant number of local digital and analog inputs/outputs, making it an all-in-one solution for medium-scale control.
- Expansion: Supports connection to decentralized I/O via the CS31 bus.
- Programming: Configured using the 907 AC 1131 software, allowing for standardized logic development.
- Diagnostics: Features a built-in display for status monitoring and error codes.
ABB 07KT98 GJR5253100R427807KT98 H3
Product Datasheet (Parameters)
| Feature | Specification |
| Product ID | GJR5253100R4278 |
| Designation | 07KT98 H3 |
| Supply Voltage | 24V DC |
| Digital Inputs | 24 (24V DC) |
| Digital Outputs | 16 (Transistor, 24V DC, 0.5A) |
| Analog Inputs | 8 (Configurable: 0-10V, 0-20mA, Pt100/Pt1000) |
| Analog Outputs | 4 (Configurable: 0-10V, 0-20mA) |
| Program Memory | 1 MB RAM / 1 MB Flash EPROM |
| Communication | CS31 System Bus, RS-232, RS-485 |
| Counter Inputs | 2 high-speed counters (up to 50 kHz) |
| Country of Origin | Germany |
Common Questions & Answers (Q&A)
Q: Can I replace a standard 07KT98 with an H3 version?
A: Generally, yes. The H3 is a specific hardware variant. However, you must ensure that your existing software configuration and memory usage are compatible with the H3’s specific firmware and hardware resources.
Q: What is the primary use of the CS31 bus on this unit?
A: The CS31 bus is used to connect the CPU to remote I/O modules (like the 07AC91), allowing the controller to manage sensors and actuators located far from the main cabinet.
Q: How do I clear a “FK3” (Fatal Error) on the display?
A: Fatal errors usually indicate a hardware or serious checksum failure. Try cycling the power (24V DC). If the error persists, it may indicate a corrupt program or a hardware fault requiring a factory reset or repair.
Q: What type of battery does the 07KT98 use?
A: It typically uses a lithium battery to retain the RAM contents and the real-time clock when power is disconnected. It is recommended to replace this battery periodically while the unit is powered to avoid data loss.
Similar Model Recommendations (8 Units)
- 07KT97: A similar AC31 CPU but with smaller memory capacity for less complex logic.
- 07KT94: A more compact version of the AC31 CPU with a different I/O density.
- 07KT98 GJR5253100R0278: The standard version (non-H3) of the same CPU family.
- 07KR91: A widely used entry-level controller for basic digital control tasks.
- 07KT95: A performance CPU optimized for high-speed pulse processing applications.
- 07AC91: A decentralized I/O expansion module used to extend the 07KT98 via the CS31 bus.
- 07KT93: A legacy basic unit designed for smaller automation footprints.
- 07MK92: A communication processor used to integrate AC31 systems with different protocols.
