ABB 3BHE021083R0101 (XVC770BE101) original ABB plug-in signal interface board
This is original ABB plug-in signal interface board with commercial part number XVC770BE101, designed for Advant OCS and AC800M DCS system as well as partial UNITROL excitation cabinet auxiliary signal processing unit. The whole PCB is coated with three-proof paint for anti-moisture, anti-dust and anti-corrosion inside control cabinet, adopting standard rack plug-in layout to match system backplane bus, responsible for field analog and digital signal conversion between on-site equipment and main controller. Original ABB production, long-term available as aftermarket spare part.
Description
1.Product Brief Introduction
This is original ABB plug-in signal interface board with commercial part number XVC770BE101, designed for Advant OCS and AC800M DCS system as well as partial UNITROL excitation cabinet auxiliary signal processing unit. The whole PCB is coated with three-proof paint for anti-moisture, anti-dust and anti-corrosion inside control cabinet, adopting standard rack plug-in layout to match system backplane bus, responsible for field analog and digital signal conversion between on-site equipment and main controller. Original ABB production, long-term available as aftermarket spare part.
2.Model Definition Explanation
3BHE stands for general PCB spare part prefix of ABB power & drive control series.021083 is exclusive internal development serial number of ABB R&D department for XVC770BE101 hardware platform.R0101 refers to initial factory mass production hardware revision without later circuit modification.XVC770BE101 is official ABB commercial model code for this complete assembled module.
3.Technical Specifications
Rated working auxiliary power DC24V±10%, typical power consumption ≤2.1W. Operating ambient temperature -20℃~+65℃, storage temperature -40℃~+85℃, relative humidity 5%~95%RH non-condensing. Internal and external circuit isolation withstand voltage 1000VAC, meets IEC61000 EMC anti-interference standard, cabinet installation protection grade IP20, net weight approx 0.32kg.
4.Interface and Communication Configuration
Rear gold-finger connector docks with rack backplane bus to transmit collected field data to master controller. Front-mounted terminal block is for external field sensor, auxiliary contact wiring. Onboard multiple LED indicators display module power status and each channel running condition. Reserved factory calibration test points on PCB, no independent external user communication bus port configured.
5.Core Functions
Complete optoelectronic isolation collection of multi-channel field switching signal and low-level analog signal, convert raw field signal into standard internal bus data format for main controller processing. Real-time self-check for channel open circuit, short circuit and power supply abnormal fault, upload fault information automatically once failure occurs. Realize signal buffering and level matching between field equipment and central control board.
6.Application Scenarios
Installed in DCS control cabinet of thermal power, hydropower, chemical, metallurgy and oil & gas industry; also used as auxiliary signal acquisition accessory inside UNITROL series generator excitation control cabinet for synchronous generator sets and large high-voltage synchronous motors.
7.Operation and Maintenance Instructions
Cut off cabinet total power before disassembly maintenance, wait more than 30 minutes for residual electric discharge to avoid static breakdown of onboard chips. Quarterly maintenance cleans PCB surface and gold finger dust with dry soft brush and tightens external wiring terminals. When system prompts channel missing alarm, check field external wiring preferentially before module replacement. Unauthorized disassembly and circuit modification are forbidden, replace full module after permanent hardware damage confirmation.
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