The ABB 07KT98 H3 (GJR5253100R0260) is a high-performance central processing unit and basic unit for the Advant Controller 31 (AC31) system. This model is designed for complex automation tasks, offering integrated digital and analog I/O alongside expandable networking capabilities through the CS31 system bus, making it a staple in legacy industrial control environments.
Technical Specifications
| Feature | Details |
| Model Number | 07KT98 H3 / GJR5253100R0260 |
| Series | Advant Controller 31 (AC31) |
| Onboard Digital I/O | 24 Inputs (24V DC) / 16 Outputs (Transistor) |
| Onboard Analog I/O | 8 Inputs / 4 Outputs (Configurable) |
| Supply Voltage | 24V DC |
| Memory | 512 kB Program Memory (User RAM) |
| Communication | CS31 System Bus, 2x Serial RS-232 |
| Country of Origin | Germany |
| Weight | Approx. 0.85 kg |
Operational Precautions
- Battery Maintenance: The 07KT98 relies on an internal lithium battery for RAM buffering; ensure the battery is replaced while the unit is powered to avoid losing the stored user program.
- I/O Wiring Isolation: When wiring the 24V DC inputs, ensure the common ground is correctly referenced to the power supply to prevent signal floating or “ghost” triggering of inputs.
- Terminal Block Seating: The pluggable terminal blocks should be firmly pushed into place and the locking screws tightened to prevent intermittent contact caused by cabinet vibrations.
- Firmware Revision: Verify that the “H3” hardware revision is compatible with your existing 907 AC 31 programming software version before attempting a program download.
Common Q&A
Q: Can I expand the I/O capacity beyond the onboard terminals? A: Yes, the 07KT98 H3 can manage up to 31 remote expansion modules via the integrated CS31 system bus interface.
Q: What is the purpose of the two serial ports? A: One port is typically dedicated to the programming software (907 AC 31), while the second can be used for Modbus RTU communication or connecting to an HMI.
Q: Is there a real-time clock (RTC) included? A: Yes, the 07KT98 H3 features an integrated real-time clock used for time-stamped event logging and scheduled control logic.
Recommended Similar Models
- 07KT97: A similar AC31 basic unit with slightly lower memory and processing specifications.
- 07KT94: A more compact basic unit for smaller-scale control applications.
- 07KR91: A basic unit with integrated relay outputs instead of transistor outputs.
- 07AC91: A digital input/output expansion module for the CS31 system bus.
- 07AI91: An analog expansion module used to increase the sensor count on an AC31 network.
E-mail:dcsplcsales@gmail.com
Wechat:+86 13365909307
Phone:+86 13365909307