ABB 3BHE014967R0002 UNS2880B-P,V2 high-performance communication control board
This unit is UNS2880B-P,V2 high-performance communication control board developed by ABB Sweden, belonging to UNITROL excitation system supporting accessory series, adopting full conformal coating PCB production process to resist dust, damp and corrosive gas inside power cabinet. It serves as intermediate data exchange core between excitation main controller, field signal acquisition modules and upper plant DCS/SCADA system, realizing bidirectional transmission of operating data, fault information and remote setting commands for generator excitation cabinet. It adopts standard rack plug-in installation structure, matching UNITROL series cabinet backplane bus layout and is widely configured on synchronous generator excitation control system of thermal power, hydropower and distributed power stations.
Description
1.Product Brief Introduction
This unit is UNS2880B-P,V2 high-performance communication control board developed by ABB Sweden, belonging to UNITROL excitation system supporting accessory series, adopting full conformal coating PCB production process to resist dust, damp and corrosive gas inside power cabinet. It serves as intermediate data exchange core between excitation main controller, field signal acquisition modules and upper plant DCS/SCADA system, realizing bidirectional transmission of operating data, fault information and remote setting commands for generator excitation cabinet. It adopts standard rack plug-in installation structure, matching UNITROL series cabinet backplane bus layout and is widely configured on synchronous generator excitation control system of thermal power, hydropower and distributed power stations.
2.Model Definition Explanation
3BHE is unified fixed coding prefix of ABB dedicated PCB spare parts for excitation and medium voltage control products.014967 stands for exclusive internal hardware development serial number of UNS2880B-P platform confirmed by ABB R&D department.R0002 represents the second official revised hardware version after circuit optimization and component upgrade based on baseline design, the corresponding commercial catalog model for ordering is UNS2880B-P,V2.
3.Technical Specifications
Rated auxiliary working power input is 220VAC 50/60Hz, compatible with wide voltage range from 85VAC to 265VAC; core data processing cycle is 1500μs to guarantee real-time communication response. Working ambient temperature ranges from -25℃ to +55℃, storage temperature from -40℃ to +85℃, applicable environment humidity 5%~95%RH under non-condensing condition. Protection grade is IP20 for cabinet built-in installation, fully meets IEC61000 EMC anti-interference standard and CE certification, net weight is about 0.67kg, overall dimension 290mm×450mm×47mm. Internal signal isolation withstand voltage reaches 1000VAC between communication channel and control power circuit, long-term allowable working current is 0.8A.
4.Interface and Communication Configuration
Rear golden finger backplane connector is inserted into cabinet internal system bus to finish high-speed data interaction with main AVR control module and signal collecting boards in rack. Front terminal terminals connect external field communication cable and auxiliary fault interlock signal wiring. Multiple onboard LED indicator lights display power supply status, channel running state and communication abnormal alarm for on-site inspection. Standard RS485 interface supports Modbus RTU protocol for remote data upload and parameter modification; expandable Profibus DP and CANopen interfaces realize seamless connection with plant DCS and upper PLC monitoring system, reserved local debug port supports offline parameter configuration via handheld debugging tool.
5.Core Functions
Receive real-time operating parameters, voltage sampling data and fault alarm codes transmitted from excitation main control board, complete data filtering, format conversion and protocol encapsulation before uploading data to upper monitoring system. Transmit remote adjustment instructions sent by DCS down to main AVR module to realize remote modification of excitation regulation parameters and working mode switching. Built-in channel fault self-diagnosis logic, automatically detect open circuit, short circuit and communication interruption of each transmission channel, store fault codes locally and trigger corresponding alarm signal once abnormal occurs. It also supports redundant communication switching function, automatically switch to standby communication channel when main channel fails to ensure uninterrupted system data transmission.
6.Application Scenarios
Mainly installed inside UNITROL series excitation cabinet of medium and small synchronous generator sets for conventional thermal power plants, hydropower stations, biomass power plants and gas distributed power stations. Equipped on excitation control cabinet of large synchronous drag motor applied in mine ventilation equipment, cement main drive motor and petrochemical high-power compressor unit to realize data interconnection between local excitation control and central control room DCS system. Also used for off-grid diesel generating set excitation cabinet communication expansion and new energy distributed power station generator excitation monitoring system transformation project.
7.Operation and Maintenance Instructions
Cut off cabinet total AC input power before disassembly or regular maintenance, keep power cut more than 30 minutes to fully release residual capacitance energy to avoid electrostatic damage to onboard precision chips. Carry out quarterly routine maintenance, use dry soft brush to wipe dust on PCB surface and golden finger contact area, check fastening condition of all external wiring terminals to eliminate poor contact caused by loose wiring. When communication interruption or data loss appears, firstly check external communication cable and peripheral wiring before replacing the whole module. Unauthorized disassembly of original onboard electronic components and arbitrary modification of internal circuit wiring are strictly forbidden; replace complete new module when permanent internal hardware damage is verified after detection.
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