ABB XZC826A102 3BHE036348R0102 Replacement Signal Board

The ABB XZC826A102 3BHE036348R0102 Replacement Signal Board is a signal-conditioning / interface board in the ABB UNITROL generator excitation system product line, providing isolated multi-channel signal conversion, status indication and interface functions for excitation control signals. It is described as a component of the UNITROL excitation control system with compatibility to the AC800M DCS automation platform.
Key Features

1. Signal conditioning board of the ABB UNITROL excitation system product line
2. Isolated multi-channel signal conversion, status-indicator driving and interface functions
3. Described as compatible with the AC800M DCS automation platform
4. Handles standard industrial process signals: 4–20 mA / 0–10 V DC
5. Includes 2 digital inputs and 2 digital outputs
6. Electrical isolation strength 2500 V AC
7. Made in Sweden

1. Type Designation: XZC826A102
2. Order Code: 3BHE036348R0102
3. Product Type: Signal conditioning board
4. System: ABB UNITROL generator excitation control system
5. Analog Signal Compatibility: 4–20 mA, 0–10 V DC
6. Digital Channels: 2 DI / 2 DO
7. Electrical Isolation: 2500 V AC withstand
8. Signal Conversion Accuracy: ±0.1% of full scale
9. Response Time: ≤5 ms
10. Power Consumption: ≤3.2 W
11. Dimensions: 22.7 × 12.9 × 1.3 cm
12. Weight: approx. 0.1 kg
13. Origin: Sweden

1. Verify the board identity (XZC826A102 vs. XZC826A103) and revision against the system spare-parts list before ordering.
2. De-energize the excitation cabinet and confirm discharge before handling the board; use ESD precautions.
3. Install the board in its designated slot and secure the connector; verify polarity of the analog signal wiring.
4. Check isolation and grounding of signal cables per the excitation system wiring rules.
5. After installation, verify signal levels at the AC800M/control interface during commissioning before returning to service.

1. What is the XZC826A102 used for? It is a signal conditioning board in the ABB UNITROL excitation system product line, providing isolated signal conversion and interface functions.
2. What signals does it handle? 4–20 mA and 0–10 V DC process signals, plus 2 DI / 2 DO channels.
3. Where is it made? Sweden.

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