ABB 3BHE012276R0101 UAD143A101 – Excitation Control Module | AC800M DCS Platform
Engineering Background
The UAD143A101 (order reference 3BHE012276R0101) is a dedicated excitation control module developed by ABB for integration within the AC800M Distributed Control System architecture. Designed to interface directly with synchronous generator excitation systems, this module provides closed-loop voltage regulation, reactive power management, and protection coordination in power generation and heavy industrial environments. It is a field-proven component deployed across hydroelectric, thermal, and industrial co-generation plants worldwide.
Product Positioning
Konmask.com supplies this module as verified surplus and refurbished stock, targeting maintenance engineers, OEM integrators, and procurement teams requiring a reliable, cost-effective replacement or spare for existing AC800M-based excitation control systems. All units are inspected, function-tested, and shipped with full traceability documentation.
Complete Technical Specifications
| Manufacturer | ABB |
| Part Number | 3BHE012276R0101 |
| Module Type | UAD143A101 |
| Platform | AC800M DCS |
| Function | Excitation Control / AVR Interface Module |
| Communication | Modulebus (AC800M backplane) |
| I/O Type | Analog & Digital mixed I/O for excitation feedback and control signals |
| Supply Voltage | 24 VDC (via S800 I/O bus) |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | -40 °C to +70 °C |
| Humidity | 5–95% RH, non-condensing |
| Protection Class | IP20 |
| Weight | approx. 600 g |
| Certifications | CE, UL (per ABB AC800M platform) |
| Firmware Compatibility | AC800M Controller OS 5.x / 6.x |
| Mounting | DIN rail / S800 I/O station |
Proven Application Environments
- Hydroelectric and thermal power plant excitation control systems
- Industrial co-generation and combined-cycle plant AVR loops
- Retrofit and life-extension projects for legacy ABB UNITROL / EXNUM excitation systems migrating to AC800M
- OEM turbine-generator control panels requiring certified ABB excitation I/O
- Spare parts inventory for power utilities with AC800M-based SCADA/DCS infrastructure
Engineering Advantages
- Seamless AC800M Integration: Native Modulebus communication eliminates gateway hardware and reduces latency in closed-loop excitation control.
- High Signal Fidelity: Dedicated analog front-end optimized for excitation feedback signals minimizes noise and drift in AVR regulation loops.
- Hot-Swap Capable: Supports online replacement within S800 I/O stations, reducing planned outage windows during maintenance.
- Redundancy Ready: Compatible with AC800M redundant controller configurations for high-availability power generation applications.
- Long Service Life: ABB industrial-grade components rated for continuous operation in demanding electrical environments.
System Architecture & Signal Flow
The UAD143A101 module occupies a standard slot in an S800 I/O station connected to the AC800M controller via Modulebus. In a typical excitation control loop:
- Generator terminal voltage and reactive power feedback signals are conditioned and digitized by the UAD143A101 analog inputs.
- The AC800M controller executes the AVR algorithm (voltage setpoint tracking, PSS, limiters) and outputs control references via the module’s analog outputs.
- Digital I/O channels handle excitation ON/OFF commands, field breaker status, and protection trip signals.
- All process data is available on the AC800M Modulebus for integration with plant-level SCADA, historian, and protection relay systems.
Sourcing & Quality Verification
- Source: Verified surplus from decommissioned power plant and OEM overstock — not counterfeit or grey-market.
- Inspection: Each unit undergoes visual inspection, board-level cleaning, and functional power-on test prior to listing.
- Traceability: ABB original labeling and serial numbers intact; documentation package available on request.
- Warranty: 90-day replacement warranty against DOA or functional defects.
- Packaging: ESD-safe anti-static bag + foam-lined carton; shock-rated for international air and sea freight.
Procurement Process
- Inquiry: Contact support@konmask.com or call +0086 19859288691 with your project requirements and required quantity.
- Quotation: Receive a formal quotation with unit price, lead time, and shipping options within 1 business day.
- Order Confirmation: Submit PO or place order directly on Konmask.com. Payment via T/T, PayPal, or trade credit (approved accounts).
- Dispatch: Orders ship within 2–5 business days via DHL / FedEx / UPS with full tracking and export documentation.
- After-Sales: Technical support available for installation verification and compatibility confirmation.
Technical FAQ
Q: Is the 3BHE012276R0101 compatible with AC800M firmware version 6.x?
A: Yes. The UAD143A101 hardware is compatible with AC800M OS 5.x and 6.x. Verify module configuration in Control Builder M after installation.
Q: Can this module replace a failed UAD143A101 in a running plant without a full system shutdown?
A: Hot-swap is supported within the S800 I/O station architecture, but excitation control loops should be transferred to manual/backup regulation before module replacement to avoid transient disturbances.
Q: Do you provide the ABB configuration software or license?
A: Hardware only. ABB Control Builder M software licenses are managed separately through ABB’s software licensing program. Contact us for referral assistance.
Q: What is the lead time for bulk orders (>5 units)?
A: Bulk availability varies by stock. Contact us for a dedicated stock check and volume pricing.
Q: Can Konmask provide a test report or incoming inspection certificate?
A: Yes. A functional test report is available upon request for orders of 1+ units at no additional charge.
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Contact: support@konmask.com | +0086 19859288691
