Description
XVC768117 3BHB007211R117 ABB Communication Module
ABB XVC768117 3BHB007211R117 is an embedded controller card in the ABB UNITOL 5000 excitation control system. Its core is positioned as an isolated analog input module and excitation signal conditioning card. It is a key signal acquisition and processing component used for the generator automatic voltage regulator (AVR) in the ABB DCS system.
core positioning
UNITOL 5000 excitation system specific embedded analog input card, which can also be used as A8B network communication module (associated with PM891K01). The main function is to isolate, collect and regulate analog signals such as voltage and current, provide accurate feedback signals for the excitation controller, and achieve stable regulation of the generator terminal voltage.
core functionality
In terms of signal acquisition, we provide isolated analog input channels that support voltage and current signal access, used to collect key electrical quantities such as generator terminal voltage, excitation current, and stator current. All input channels are completely isolated from the controller logic circuit and power supply, with an isolation voltage of several thousand volts, effectively preventing on-site strong electrical interference from entering the control system.
In terms of excitation control, this card is capable of controlling voltage and current to generate gain, oscillation, or similar integral functions, and is the core signal channel for implementing automatic voltage regulation (AVR) and reactive power regulation in the UNITROL 5000. Built in signal conditioning circuit, supports multiple input range configurations, and adapts to the signal levels of generators of different specifications.
In terms of communication, as an embedded card, it can be directly inserted into the dedicated slot of the UNITOL 5000 controller chassis and communicate with the main controller through the system backplane bus without the need for additional communication protocol configuration. In some application scenarios, it can also be used as an A8B network communication node to achieve data interaction with the upper monitoring system.
In terms of electrical characteristics, the input signal supports multiple range configurations and has functions for wire breakage detection and fault diagnosis. Any channel abnormality can be immediately reported to the controller. The working temperature range covers the industrial site environment, the protection level meets the installation requirements inside the cabinet, and the power consumption is low, powered by the controller bus.
Related models in the same series
XVC768101 3BHB007211R101 is a power interface module responsible for system power management and distribution. XVC768102 3BHB007211R102 is a digital output module used to drive actuators such as solenoid valves and relays. XVC768115 3BHB72111R115 is an analog input/output module. XVC768116 3BHE007211R116 is an input-output hybrid module. XVC768AE117 3BHB007211R0117 is an upgraded version with the same functionality. XVC768AE123 3BHB007211R0123 is a high configuration version of the same series.
XVC768117 3BHB007211R117 ABB Communication Module
Application industry
In the power utility industry, the excitation system of generators in thermal power plants and hydropower stations under the State Grid Southern Power Grid. In the petroleum and petrochemical industry, the voltage regulation of generators in Sinopec’s self owned power plants. Excitation control for self owned power stations in the mining and metallurgical industry for non-ferrous and ferrous metal mines. The AVR system for waste heat power plants of large cement groups such as Conch China Resources in the cement and building materials industry. Excitation regulation for the paper industry, pulp mills, and paper mill owned power plants. In the rail transit industry, the backup power excitation for subway and light rail traction substations. Voltage stability control of diesel generator sets in large data centers in the data center industry. The excitation system of synchronous generators for wind farms and photovoltaic power plants in the renewable energy industry.
Usage scenario
Firstly, the AVR system for power plant generators. In 300MW and above thermal power units, XVC768117 collects generator terminal voltage and excitation current signals, and adjusts excitation transformer output after calculation by UNITROL 5000 controller to maintain generator terminal voltage within plus or minus 0.5% of rated value.
Secondly, excitation control for hydropower stations. In large and medium-sized hydropower stations, this card collects terminal voltage and reactive power signals, and cooperates with PID regulation to achieve automatic control of voltage and reactive power, with response speed meeting the requirements of power grid dispatch.
Thirdly, the voltage stability of the self owned power plant. In self owned power plants such as cement plants, mines, and petrochemicals, XVC768117 replaces discrete components in old-fashioned analog excitation cabinets to achieve digital excitation control, reduce maintenance costs, and improve regulation accuracy.
Fourth, voltage regulation of diesel generators. In the backup diesel generator sets of important loads such as data centers and hospitals, this card collects output voltage and current signals to ensure stable voltage when the backup power supply is put into operation, ensuring uninterrupted operation of critical loads.
Fifth, wind and photovoltaic power are matched with synchronous generators. In the synchronous generators supporting wind farms and photovoltaic power stations, XVC768117 provides excitation current feedback and cooperates with inverters to achieve flexible adjustment of reactive power, meeting the reactive power assessment requirements of the power grid for new energy stations.
Sixth, renovation of old excitation systems. In power plants still operating the UNITOL 5000 old-fashioned excitation system, XVC768117 is used as an original replacement card, plug and play without the need to modify control logic, solving the problem of replacing discontinued spare parts.
one-sentence summary
ABB XVC768117 3BHB007211R117 is an isolated analog input embedded card for the UNITOL 5000 excitation control system. Its core functions include voltage and current signal isolation acquisition, excitation AVR regulation, and disconnection diagnosis. The same series covers multiple functional modules such as power supply, digital output, IO mixing, etc. It is widely used in generator automatic voltage regulation and excitation control scenarios in industries such as thermal power, hydropower, mining, cement, papermaking, data centers, and renewable energy.
