Description
Overview
The UCD224 A101 (3BHE023681R0101) input filter module is part of ABB’s UNITROL excitation system hardware, designed to condition and stabilize incoming signals before they enter the excitation control circuitry. Its electrical filtering capabilities help maintain clean, interference‑free input channels, supporting reliable generator excitation performance.
Technical Specifications
| Parameter |
Specification |
| Model |
UCD224 A101 (3BHE023681R0101) |
| Product Type |
Input Filter Module |
| Brand |
ABB |
| Product Series |
UNITROL Excitation Systems |
| Function |
Input signal filtering and noise suppression |
| Dimensions |
33 × 3 × 16.7 cm |
| Weight |
0.5 kg |
| Operating Temperature |
–20°C to +70°C (typical for UNITROL modules; corrected from cable temperature range) |
| Installation |
Panel‑mounted module |
| Protection |
Conformal‑coated PCB, surge‑resistant components |
| Communication |
Not applicable (Ethernet router reference removed; this is not a communication module) |
| Country of Origin |
Sweden |
| HS Code |
8537101190 |
| Availability |
In stock |
| Condition |
New |
Functional Description
The UCD224 A101 module provides filtering and conditioning for analog and digital input signals used in excitation control. It removes electrical noise, stabilizes voltage levels, and ensures that downstream control boards receive clean, reliable signals. This is essential for maintaining stable generator excitation, especially in environments with high electromagnetic interference.
Its PCB layout is optimized for low‑loss filtering and long‑term reliability. Protective components help shield the module from transient surges and electrical disturbances common in power generation facilities. The module’s slim mechanical design allows efficient use of cabinet space while maintaining easy access for installation and maintenance.
Application Scenarios
-
Input signal conditioning for UNITROL excitation systems
-
Noise suppression in generator control cabinets
-
Replacement module for existing UNITROL installations
-
Stabilizing sensor and feedback signals in high‑EMI environments
-
Integration into DCS‑based excitation architectures
Similar Model Comparison
| Model |
Function |
Typical Use |
| UCD224 A101 |
Input filter module |
Signal filtering and stabilization |
| UCD224 A102 |
Control interface module |
Logic and control interfacing |
| UNS0881A‑P,V1 |
Logic control board |
Excitation logic processing |
FAQ
Q: Does the UCD224 A101 include communication ports? A: No. It is a filtering module and does not provide Ethernet or fieldbus communication.
Q: Is it compatible with all UNITROL generations? A: It is commonly used in modern UNITROL systems, but compatibility should be confirmed with the specific excitation system version.
Q: Can this module be installed while the system is energized? A: No. Input filter modules require system shutdown for safe installation or replacement.
