Description
ABB KX8974cV24 HIEE320606R1
Introduction to ABB KX8974cV24 HIEE30606R1 Multi functional Interface Card Module
ABB KX8974cV24 HIEE32066R1 is a multifunctional interface card module in ABB’s industrial automation product line, belonging to the KX8974 series (V24 is the second generation version). Its core function is to establish a high-speed, electrically isolated serial data channel between DCS/PLC controllers and on-site intelligent devices, while providing power management and communication protocol conversion functions. It is a standard communication bridge for ABB’s traditional control platforms (Advant Controller, Symphony INFI 90, Symphony Plus) to connect third-party devices such as turbine governors, protective relays, and smart meters.
ABB KX8974cV24 HIEE320606R1
core positioning
The module itself does not collect on-site primary side signals, nor does it execute control logic. Instead, it exists as a “communication protocol converter+electrical isolator+power management unit” – receiving digital instructions from the DCS controller, processing them internally, and driving the on-site execution mechanism through multiple serial interfaces; Simultaneously collect on-site sensor signals and transmit them back to DCS; And communicate directly with third-party devices through the onboard multi protocol communication interface. The core difference from ordinary serial port cards is that it provides dual independent isolation channels, which can simultaneously connect two devices of different protocols, and achieve high-level electrical isolation between the field side and the system side, effectively blocking the impact of grounding circuits and field transients on the controller. In some application scenarios, it also undertakes power equipment management functions and has overcurrent, overvoltage, and undervoltage protection functions.
Basic Parameters
Material Number: KX8974cV24/HIEE32066R1
Model: KX8974cV24 (V24 is the second-generation version)
Series: KX8974 (same series includes KX8974a V24 HIEE320605R1, KX8974b V24 HIEE320607R1)
Type: Multi functional interface card/Communication interface module/Power management module
Communication interface: RS-232/RS-485/RS-422/CAN, multiple independent channels
Communication protocols: Modbus RTU/TCP, Profibus DP, Profinet, RPWT (ABB Turbine Protocol), SPA (Protective Relay Protocol), and user-defined ASCII protocol
Electrical isolation: ≥ 1500V rms between the on-site side and the system side (some data indicate 2500V rms)
Working voltage: 24V DC (supporting a wide range of 21.6V to 31.2V), some applications support 90-260V AC/DC adaptive
Working temperature: -20 ° C to+60 ° C
Storage temperature: -40 ° C to+85 ° C
Protection level: IP65 (can be directly installed outdoors or in high dust, humid environments)
Power consumption: approximately 3W~6W (typical value)
Installation method: DIN rail installation, compatible with Symphony I/O subrack, Advant Controller rack
Size: Approximately 100mm x 100mm x 50mm (standard module size)
Weight: Approximately 0.3kg
Main functional features
Multi protocol native support: onboard Modbus RTU/TCP, Profibus DP, Profinet, CANopen, RPWT, SPA and other communication interfaces, can communicate with multiple field devices of different protocols simultaneously. The core upgrade of V24 version compared to earlier versions lies in the addition of Ethernet ports (Profinet/Modbus TCP) and stronger protocol switching capabilities. The same card can be switched from Profibus to Ethernet through firmware upgrade without the need for hardware replacement.
Dual port independent communication.
High level electrical isolation: The isolation between the on-site side and the system side is ≥ 1500V rms (some versions reach 2500V rms), which is much higher than the 1500V standard of ordinary communication modules. It is particularly suitable for power plants and heavy industry sites with strong grounding circuits or high-frequency transient interference, effectively blocking the impact of on-site grounding circuits and high-frequency transients on DCS controllers.
Power management and protection: Built in overcurrent protection, overvoltage protection, and undervoltage protection functions can effectively protect the safety of connected motors, frequency conversion systems, and on-site equipment. 90-260V AC/DC wide voltage adaptive, regardless of whether the factory battery is 110Vdc or 230Vac, the same SKU can work directly, reducing spare parts inventory.
Transaction management capability: In the IT/OT fusion scenario, this module can serve as a transaction manager between PLC and SQL database, mapping the tags on the PLC side to the table records on the database side, achieving automatic downloading and uploading of formula data and production parameters, reducing the computational burden on PLC, and utilizing enterprise SQL database resources.
High speed long-distance transmission: up to 115.2 kbps baud rate, supports 1200 meter long-distance communication (shielded twisted pair) at 9600 bps, meeting the wiring requirements between controllers and remote field devices in large power plants.
Hot swappable support: Supports replacement while the rack is powered on, and maintenance can be completed without cutting off the system power supply, reducing the risk of downtime.
Status indication: Equipped with LED status indicator lights, displaying TX/RX activity and link health status, providing intuitive communication status feedback, making it easy to quickly determine whether it is a module side problem or a line side problem on site.
Parameterized configuration: Supports online configuration of baud rate, data bits, stop bits, parity check, protocol type, output parameters, etc. through ABB’s dedicated industrial control software. The configuration takes effect in real time and reduces downtime for debugging.
Start self check: Automatically check the electrical ID of the module when powered on, and do not enter the running state when it does not match the configuration, to prevent communication abnormalities or control failures caused by mismatches.
Comparison with products in the same series
KX8974a V24 HIEE320605R1: Early version, only supports RS-232/RS-485, without Ethernet port, suitable for old projects that do not require IEC 61850 communication.
KX8974b V24 HIEE320607R1: Mid term version with added CANopen interface, suitable for scenarios that require connection to CAN bus devices such as frequency converters and servo drives.
KX8974c V24 HIE320606R1: The current version integrates RS-232/RS-485/RS-422/CAN/Ethernet full interfaces, with the widest protocol support range, suitable for scenarios that require simultaneous connection of multiple field devices and high isolation levels.
CI858-1 (3BSE018137R1): The universal communication module of the Advant Controller series has a protocol support range similar to KX8974c, but CI858-1 only provides communication functions and does not have the power management and transaction management capabilities of KX8974c.
KVC758A124 (3BHE02195R1024): Both are ABB dual port serial communication modules, but KVC758A124 is designed for S800 I/O architecture, while KX8974cV24 is designed for traditional Symphony/Advanced Controller platforms. The two have different application scenarios and cannot be directly interchanged.
Typical application scenarios
Power industry: Communication between the generator set DCS and ABB turbine governor, while connecting protective relays for status monitoring. The dual port design precisely meets the dual device access requirements of “governor+relay”, and the high isolation level protects the DCS from the transient effects of high-power equipment switches.
Oil and gas: serial data exchange between SCADA system and on-site RTUs and intelligent instruments, long-distance communication capability adapted to the wiring conditions of offshore platforms and remote well stations, and wide voltage power supply adapted to the diverse power supply environment on site.
Chemical industry: Connect temperature sensors, pressure sensors and other on-site equipment in the process control system to achieve real-time monitoring of the chemical production process. Multiple protocols support simultaneous access to instruments from different manufacturers.
Water treatment: Communication between the main controller of the variable frequency water supply system in the pump station and the on-site instruments, with an IP65 protection level suitable for humid environments.
Manufacturing industry: grid connection management and synchronous control of self owned power plants, transaction management function supports automatic download of production formula data, reducing the workload of PLC hard coding.
