Description
Manufacturer: ABB
Part Number: UAD215A105, 3BHE026284R0105
Product Type: CSI Converter Signal Interface Board
Product Overview
The UAD215A105 (3BHE026284R0105) is a rack-mounted signal conditioning and interface PCB for ABB UNITROL static excitation systems and PEC80 power electronic control platforms. It serves as the interface between the power converter (CSI current source inverter) and the main control processor board. This board collects high-voltage converter analog feedback signals, performs galvanic isolation, signal scaling and filtering, then transmits processed measurement data to the main controller for excitation regulation, firing pulse coordination and power converter protection. It is a critical spare for large synchronous generator static excitation cubicles in power plants.
Technical Specifications
| Parameter | Value |
|---|---|
| Full Part Code | UAD215A105 / 3BHE026284R0105 |
| Measurement Range | 30 V, channel isolation rated 1000 V |
| Auxiliary Supply | 24 V DC (18–30 V DC from rack backplane) |
| Analog Input Types | ±10V DC, 4–20mA configurable via jumpers |
| Isolation | Optical galvanic isolation between field converter side and control backplane |
| Backplane Bus | Internal PEC / UNITROL rack bus for communication to master controller |
| Mounting | Eurocard plug-in module for UNL14300 rack backplane |
| Operating Temperature | -20 °C ~ +70 °C |
| Storage Temperature | -40 °C ~ +85 °C |
| Relative Humidity | 5–95% RH non-condensing |
| Compatibility | UNITROL 5000, UNITROL 6000, AC800PEC, PEC80 power electronic control |
| Country of Origin | Sweden |
| Indicators | Power, run and fault LED diagnostics |
Key Features
- High voltage isolated signal acquisition for CSI converter feedback signals, protecting control electronics from power circuit transients.
- On-board analog signal conditioning, scaling and anti-aliasing filtering for converter voltage and current measurements.
- Configurable input mode supporting both voltage and 4–20mA analog signals by hardware jumper settings.
- Internal high-speed backplane communication to deliver converter measurement data to main control CPU.
- Comprehensive hardware self-diagnosis for channel faults, signal loss and board power failure.
- Standard Eurocard form factor for direct drop-in replacement in UNITROL excitation racks.
Application Scenarios
- Thermal power plant UNITROL 6000 static excitation cabinets
- Hydro generator excitation control systems
- Combined-cycle power plant large synchronous generator AVR and converter control
- Industrial captive power plant high-power excitation systems based on PEC80 platform
Installation & Maintenance Notes
- Isolate all high-voltage converter circuits and 24V auxiliary supply before board removal.
- Apply full ESD protection when handling the PCB to avoid static damage to isolation and ADC components.
- Verify all high-voltage feedback wiring connections and insulation integrity before energization.
- Check jumper configuration matches the required input signal type before commissioning.
- After replacement, perform signal calibration and verify converter feedback readings.
- Confirm hardware revision and firmware compatibility with the existing PEC / UNITROL controller before spare procurement.
FAQ
Q: What is the difference between UAD215A102, A105 and A106 variants? A: UAD215A102:15V/1000V; UAD215A105:30V/1000V; UAD215A106:30V/1500V. Select based on converter feedback voltage and isolation requirements.
Q: What system is UAD215A105 used for? A: It is the CSI converter signal interface board for ABB UNITROL 5000 / UNITROL 6000 generator static excitation and PEC80 power electronic control systems.
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