The ABB 3BHE004573R0143, also known as the UFC760BE143, functions as a specialized interface board within ABB’s ACS6000 medium-voltage drive and UNITROL excitation systems . This module serves as a critical auxiliary signal acquisition board rather than a standalone controller. It works in tandem with the INU mainboard (3BHE004573R0142) to handle power unit signal preprocessing . Engineers designed this board specifically for cabinet-internal communication, meaning it does not carry an external Profibus DP interface for DCS connectivity .
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 3BHE004573R0142 / UFC760BE143 |
| Board Type | Power unit auxiliary signal acquisition board |
| Weight | 0.594 kg |
| Dimensions (W x H x D) | VME standard form factor |
| Supply Voltage | 24 V DC from cabinet backplane |
| Power Consumption | Approximately 18 W |
| Operating Temperature | -20°C to +60°C |
| Protection Rating | IP20 with full conformal coating |
| Communication | Internal MSC backplane bus to INU board only; no Profibus DP |
Core Signal Acquisition and Protection Functions
This interface board collects and preprocesses multiple signal types from the power unit. It receives IGCT drive, overtemperature, and short-circuit fault signals from the XVC767 small board, then performs filtering and analog-to-digital conversion before forwarding them via the internal MSC bus to the INU mainboard . Beyond fault signals, the module independently processes cooling system data, including water/air temperature, water pressure, and busbar voltage division samples . This dedicated processing reduces the signal load on the INU board and improves overall system sampling speed and stability . Importantly, the board features hardware fault pre-latching protection; when it detects a critical power unit fault, it latches the fault level locally to prevent signal jitter from causing false main controller trip decisions .
Hardware Isolation and Application Context
The ABB 3BHE004573R0143 employs full galvanic isolation on all analog and digital channels using optocouplers, providing robust protection against common-mode interference from the medium-voltage cabinet . Users will find this board in high-power applications such as steel mill rolling mills, power plant high-voltage fans and pumps, and large turbine generator excitation systems . This board is not a general-purpose controller; rather, it is a specialized PCB that enables the classic ABB medium-voltage architecture: UFC760 control paired with GV C700 gate unit . The BE143 suffix represents a specific firmware version, and users must verify exact part number compatibility before replacing any board in an existing cabinet .
Details
| Weight | 0.5 kg |
|---|---|
| Dimensions | 233 × 160 × 20 mm |
