ABB UAD154A 3BHE026866R0101 Analog & Binary I/O Interface Board

Description

Hardware & Electrical Specifications

• Model：UAD154A
• Part Number：3BHE026866R0101
• Module Type：Analog & Binary I/O Interface Board
• Bus Interface：Internal high‑speed back‑plane connector for data exchange with main processor
• Analog Channels：Multi‑channel isolated analog input / analog output
• Binary Channels：Multi‑channel isolated binary input / binary output relay type
• Power supply：24 V DC cabinet internal power supply
• Max power consumption：12 W
• Galvanic isolation：≥2500 V AC between field‑signal side and control‑logic side
• Dielectric strength：2500 V AC 1 minute
• Insulation resistance：＞100 MΩ @ 500 V DC
• On‑board protection：Surge suppression, ESD protection, over‑current protection on each channel, conformal coated PCB
• Compatibility note：Must match UNITROL6000 full‑system firmware; cannot operate standalone, must cooperate with PPC‑series main‑processor hardware.

Environmental Specifications

• Operating temperature：‑10 ℃ ~ +60 ℃
• Storage temperature：‑40 ℃ ~ +85 ℃
• Relative humidity：5%‑95% non‑condensing
• Protection degree：Installed inside excitation cabinet rack
• EMC compliance：IEC 61000‑6‑2 industrial electromagnetic immunity standard
• Certifications：CE

Mechanical Data

• Installation：Plug‑in rack‑mount board, installed inside UNITROL6000 cabinet
• Interfaces：Internal back‑plane connector; external terminal block for field I/O wiring
• Suitable wire cross‑section：0.75 mm²‑2.5 mm² copper cable for signal terminals
• Terminal tightening torque：0.6‑1.0 N·m
• Weight：approx 0.65 kg
• Dimension：233 mm × 160 mm × 25 mm

Main Functions

1. Isolated analog signal output: Receives digital set‑point commands from main processor, converts to isolated analog output signals for auxiliary peripheral equipment inside excitation cabinet.
2. Analog signal acquisition: Collects auxiliary field analog signals, completes signal conditioning and A/D conversion, transmits measured values to main processor.
3. Binary output relay drive: Outputs relay contact signals for excitation system alarm indication, external interlock and auxiliary equipment control.
4. Binary status input processing: Acquires dry‑contact status signals from cabinet auxiliary devices, converts field status into digital logic for system interlock and sequence control.
5. Channel‑level fault monitoring: Detects analog channel abnormal, binary‑output fault and input‑signal loss, reports fault codes to main processor.
6. Board‑level self‑diagnosis: Monitors on‑board power supply and hardware logic running status; uploads hardware fault alarm to UNITROL6000 system.
7. On‑board multi‑LED status indication
   • Green LED：Board power supply normal, board logic running healthy
   • Yellow LED：I/O channel signal active, data transmission ongoing
   • Red LED：Channel fault / board hardware fault alarm

Installation & Wiring Requirements

1. Cut off cabinet total power before disassembly and assembly. Insert UAD154A into designated rack slot and lock fixing screws firmly. Hot‑swap is strictly forbidden.
2. Connect field analog and binary‑signal cables to corresponding terminal blocks; strictly follow excitation cabinet wiring specification; separate high‑power cables and weak‑signal cables to reduce electromagnetic interference.
3. Cabinet protective grounding must comply with ABB AC800‑PEC / UNITROL6000 system grounding specification.
4. After replacement, verify full‑system firmware compatibility with main processor board; download matching project parameters; perform analog‑channel calibration and binary‑input/output function test before commissioning.
5. Replacement note: Cannot run independently; must match corresponding main‑processor hardware and full‑system firmware version.