The 07KT98 H2 GJR5253100R0278 is a high-performance central processing unit and communication module for the ABB Advant Controller 31 (AC31) series. This module serves as the primary intelligence for decentralized automation tasks, offering integrated I/O, high-speed processing, and multiple communication interfaces. The “H2” designation indicates a specific hardware revision or feature set, often associated with enhanced memory or specific bus capabilities for large-scale industrial applications.
Technical Specifications and Parameters
The hardware and performance details for the 07KT98 H2 are summarized in the following table:
Product Datasheet
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All-in-One Architecture: Combines CPU, digital I/O, and analog I/O in a single compact housing, reducing the footprint in control cabinets.
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Networking Capability: Supports the CS31 system bus for decentralized expansion and features serial interfaces for HMI or point-to-point communication.
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Fast Cycle Times: Optimized instruction execution times suitable for high-speed machine control and complex regulatory loops.
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Maintenance-Free Data Protection: Uses internal Flash technology to store user programs without the absolute necessity of a backup battery for logic retention.
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Extended I/O Configuration: Allows for the connection of up to 31 remote I/O modules via the integrated CS31 bus interface.
Country of Origin
Origin: Germany (ABB Automation Products GmbH)
Technical Description
The 07KT98 H2 GJR5253100R0278 acts as a versatile controller for both standalone machinery and networked plant segments. It processes binary and analog signals from the field, executes user logic programmed via the AC31 90 software, and drives actuators through its onboard transistor outputs.
The “H2” version is characterized by its ability to handle larger data sets and more complex communication tasks than standard base units. The integrated analog channels feature high-resolution 12-bit conversion, making it suitable for temperature control and pressure monitoring without requiring additional specialized modules. For system expansion, the module manages the CS31 fieldbus protocol, ensuring deterministic data exchange with remote modules over long distances.
Common Questions & Answers (Q&A)
Q: Is the 07KT98 H2 compatible with the older 07KT94 or 07KT97 series? A: Yes, it is part of the same AC31 family and is generally backward compatible in terms of the CS31 bus. However, the 07KT98 H2 has a larger memory map and more I/O, so the user program may need to be reconfigured in the engineering software.
Q: How do I clear the “ERR” LED on the front panel? A: A red “ERR” LED indicates a system fault. This can be caused by an I/O short circuit, a missing CS31 bus terminator, or a checksum error in the program. Connecting the 907 AC 31 software will provide a detailed error code.
Q: Can the serial ports be used for Modbus communication? A: Yes, the serial interfaces on the 07KT98 H2 can be configured for various protocols, including Modbus RTU (Master or Slave), using specific library blocks in the application program.
Q: Does this module require a battery? A: While the program is stored in non-volatile Flash, a battery (typically type 07LE90) is required if you need to retain real-time clock data and “retentive” variables during power-off periods.
