ABB 3BHL000517P0002 Optical Signal Interface Board

ABB 3BHL000517P0002 Optical Signal Interface Board
I. Basic Model Information
Full part number: 3BHL000517P0002
Product category: 3BHL series high-voltage current control valve-controlled optical interface board
Compatible systems: ABB HVDC flexible DC converter valve, SVG static reactive power compensation, high-power variable frequency drive valve-controlled system
Core positioning: High and low voltage photoelectric isolation signal transfer board, the only optical communication bridge between the main control low-voltage side and the high-voltage thyristor valve unit

 Core Hardware Functions
Bidirectional photoelectric conversion
Issue thyristor trigger light pulse instructions; collect valve unit temperature, faults, and status feedback optical signals. Electrical complete isolation, blocking strong electromagnetic interference from the high-voltage side from entering the main control circuit.
Multi-channel optical fiber channel integration
Onboard multi-channel industrial multimode optical receiver and transmitter modules, unified ST optical fiber interface, synchronous transmission of multiple valve group signals, independent channel self-check.
Real-time fault diagnosis
Automatically detect optical fiber breakage, optical module failure, abnormal optical power, and channel communication loss. Panel LED alarm and upload to the upper valve control VCU unit.
Backplane bus interaction
Through the parallel bus inside the rack and data interaction with the valve control main control board, transmission of trigger timing, protection interlock signals.
Hardware protection circuit
Built-in overcurrent, surge, and static protection, suitable for substations and converter stations with harsh EMC conditions.

Electrical and Environmental Specifications
Power supply: Rack backplane DC 24VDC power supply
Optical fiber medium: Industrial multimode optical fiber, standard ST connector
Installation: Standard slot-type rack installation, supports hot-swappable replacement without downtime
Operating temperature: 0℃ ~ +60℃, cabinet indoor installation
Protection level: IP20 (inside the cabinet)
Compliance standards: IEC 61850, high-voltage power conversion industry EMC anti-interference standards

Complete Valve Control System Complementary Components
Valve control main control unit VCU
Optical fiber signal interface board: 3BHL000517P0002
Optical fiber link (multimode ST optical fiber)
Valve unit thyristor trigger acquisition board
Upper-level debugging software: ABB MACH control platform (reads channel faults, optical link status)

Suffix Differentiation of the Same Series (Cannot Be Directly Interchanged) Table
Model Channel Configuration Difference
3BHL000517P0001 Reduced-channel basic version, with small SVG accessory
3BHL000517P0002 Standard multi-channel universal model (mainstream off-the-shelf model)
3BHL000517P0003 Extended multi-channel, specially designed for large HVDC converter stations

Typical Application Scenarios
Offshore wind power flexible DC transmission converter valve control system
Grid high-voltage SVG/STATCOM reactive power compensation device valve control cabinet
Metallurgical rolling mill, mining large-power rectifier frequency conversion transmission system
Urban rail transit DC traction power supply valve group control