UFC921A101 3BHE024855R0101 circuit board

UFC921A101 3BHE024855R0101 circuit board

Product Details Introduction

1. Basic Overview

Model: UFC921A101 (functional model)

Order number: 3BHE024855R0101 (ABB official material number)

Usage: Industrial automation control module, typically used in ABB AC 800M or Freelance 800F systems as an I/O module or communication module.

2. Main functions

May be used for digital input/output (DI/DO) or analog signal processing (AI/AO).

Supports industrial communication protocols such as Profibus DP, Modbus, Ethernet/IP.

Suitable for DCS (Distributed Control System) or PLC (Programmable Logic Control) applications.

3. Technical parameters (to be confirmed in the manual)

Working voltage: 24V DC or 110-240V AC (depending on the specific model)

I/O points: may be 8/16/32 channels (please refer to the specification sheet)

Communication interface: may support RS485, Ethernet, or fiber optic

Environmental adaptability: The working temperature is usually between -20 ° C and+60 ° C

4. Compatibility and Substitution

Original factory replacement: It is recommended to purchase through ABB official or authorized agents to ensure firmware compatibility.

Alternative models: There may be slight differences between different versions (such as UFC921A102), and technical documentation needs to be checked.

Second hand/refurbished market: Some industrial automation spare parts suppliers may offer tested second-hand modules.

5. Common faults and troubleshooting

Power issue: Check if the power supply is working properly (if the LED status light is on).

Communication malfunction:

Check if the Profibus/Modbus wiring is correct.

Confirm whether the DIP switch or jumper settings match the network configuration.

I/O signal abnormality:

Check if the terminal wiring is loose or short circuited.

Use a multimeter or oscilloscope to check if the signal is normal.

Product imag

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