Application Scenarios
At a combined-cycle power plant in Ontario,operators struggled with intermittent signal loss from turbine auxiliary status sensors,leading to misleading HMI indications and delayed fault response.The root cause was traced to outdated terminal boards with poor noise immunity and aging connectors.The engineering team upgraded to the ABB 3BHE022678R0105 GDD830 B105 digital input terminal boards in the Symphony Plus I/O racks.Each 3BHE022678R0105 module was connected to field devices such as lube oil pressure switches,cooling fan status contacts,and valve limit switches.Its built-in filtering,high common-mode voltage rejection,and galvanic isolation(up to 250V AC)eliminated electrical noise from VFDs and high-power circuits.Within weeks,signal integrity improved dramatically—false alarms dropped by 90%,and operators gained real-time confidence in turbine auxiliary status,enhancing plant safety and operational transparency.
Main Parameters
Parameter Value/Description
Product Model 3BHE022678R0105(Full Assembly)/GDD830 B105(Functional Designation)
Manufacturer ABB
Product Category Digital Input Terminal Board
Channel Count 16 digital input points
Input Voltage 24 VDC(nominal),range 18–30 VDC
Signal Type Dry contact or wetted voltage(sourced/sinked)
Isolation Channel-to-channel and channel-to-ground:250 V AC
Filtering Adjustable digital filtering(1–100 ms)to suppress contact bounce
Connection Type Removable screw terminal blocks(Phoenix-style)
Compatibility ABB Symphony Plus(AC 800M),Symphony Harmony,INFI-90
Diagnostics Per-channel status LED indication(ON/OFF)
Operating Temperature 0°C to+60°C(industrial environment)
Technical Principles and Innovative Values
Innovation Point 1:High Noise Immunity&Signal Integrity
The 3BHE022678R0105 employs opto-isolators and multi-stage filtering to reject electromagnetic interference(EMI)from motors,transformers,and switching loads.Its 250V AC isolation barrier prevents ground loops and protects the DCS controller,a critical advantage in electrically noisy power plants.
Innovation Point 2:Flexible Field Interface
Unlike fixed-input modules,the GDD830 B105 supports both dry contact(e.g.,limit switches)and wetted voltage inputs.This flexibility reduces spare part inventory and simplifies system design.The wide 18–30V DC input range accommodates voltage drops in long field wiring runs.
Innovation Point 3:Hot-Swappable&LED-Diagnosed Design
Each 3BHE022678R0105 board features per-channel LEDs that visually indicate signal status—enabling fast troubleshooting without HMI access.The module supports hot-swap replacement in redundant DCS architectures,minimizing process downtime during maintenance.
Innovation Point 4:Seamless Symphony Plus Integration
The 3BHE022678R0105 integrates natively with ABB’s AC 800M controllers via the S800 I/O bus or INFI-Net.It auto-detects in Control Builder M and Asset Optimization software,reducing engineering time and configuration errors.
Application Cases and Industry Value
In a petrochemical refinery in Saudi Arabia,the flare gas recovery system required reliable monitoring of 120+safety interlocks,including pressure switches,flame detectors,and valve positions.The existing terminal boards suffered from corrosion and signal drift due to harsh ambient conditions.By deploying ABB 3BHE022678R0105 GDD830 B105 boards in explosion-proof I/O cabinets,the facility achieved 100%signal reliability.The robust screw terminals resisted vibration,and the sealed design prevented dust and moisture ingress.Over two years,the system recorded zero input failures,contributing to a perfect safety audit score.Engineers highlighted the ease of diagnostics—using the front LEDs to verify sensor status during turnarounds—saving hundreds of maintenance hours annually.
Related Product Combination Solutions
ABB 3BHE022677R0105(GDD820 B105):16-channel digital output module,pairs with 3BHE022678R0105 for complete DO/IO integration.
ABB 3BHE018278R0101(AI810):8-channel analog input module,complements 3BHE022678R0105 for mixed-signal control.
ABB 3BSE018278R1:S800 I/O rack adapter,provides backplane connection for 3BHE022678R0105.
ABB 3BHE033998R0101(PS801):Power supply unit for S800 I/O systems,powers GDD830 B105 and other modules.
ABB 3BHE022680R0105(GDD840 B105):8-channel relay output terminal,ideal for driving solenoids and alarms.
ABB 3BHE022679R0105(GDD835 B105):8-channel isolated digital input,for high-noise or high-voltage applications.
ABB 3BHE034444R0101(CI854):Profibus DP-V1 interface,enables 3BHE022678R0105 integration with third-party systems.
ABB 3BHE037777R0101(DI810):Next-generation digital input with enhanced diagnostics and HART support.
Installation,Maintenance,and Full-Cycle Support
Installing the ABB 3BHE022678R0105 GDD830 B105 is straightforward:insert the module into the designated slot on the S800 I/O rack,ensuring proper seating on the backplane.Connect field wiring to the removable terminal blocks—no special tools required.Use twisted-pair shielded cables for long runs,grounding the shield at one end to reduce noise.Once powered,the module is auto-recognized in Control Builder M;assign tags and filtering parameters as needed.
Routine maintenance is minimal.Periodically inspect terminal screws for tightness(0.22–0.25 Nm torque)and clean dust buildup.The front-panel LEDs allow instant visual verification of input status during walkdowns.The 3BHE022678R0105 is designed for 20+years of service in industrial environments.We provide full lifecycle support,including configuration audits,spare part provisioning,and technical training.Our experts assist with system upgrades and migration from legacy INFI-90 platforms.
ABB 5SHY4045L0006 3BHB030310R0001 3BHE039203R0101 GVC736CE101 5SHY4045L0006 3BHB030310R0001 3BHE039203R0101 GVC736CE101 ABB GRID BREAKER UNIT GBU72 3BHE055094R0002 3BHE031197R0001 3BHB030310R0001 In stock!!! Interested parties please inquire
Reviews
There are no reviews yet.