1. Product Basic Info & Brand / Series

• Brand: ABB

• Series / Family: UF C9xx / C921 Interface / Control Module family

• Model / Part Number: UF C921 A101 — 3BHE024855R1101

• Type: INT‑2 interface / control board (drive interface / internal control board)

• Role: Interface board / internal control module that integrates with ABB ACS (drive / motor control) systems

2. Product Introduction

The UF C921 A101 (3BHE024855R1101) is an INT‑2 interface/control board used within ABB’s ACS drive systems. It is designed to facilitate communications, control logic, and integration between the drive electronics and external control networks (PLCs, fieldbuses). The board is varnished (protective coating) to resist moisture, dust, and contaminants typically found in industrial environments. It often carries firmware that handles signal routing, diagnostics, monitoring, and communication protocols.

It is typically mounted inside the drive cabinet, plugged into internal connectors, and works as part of the drive’s control core. As such, the unit is small, lightweight, and not a standalone external module.

3. Parameters / Technical Specifications

Below is a table of known / estimated parameters for UF C921 A101 (3BHE024855R1101):

Note: The weight value is supported by multiple listings claiming 0.3 kg (310 g) for the board.

4. Product Applications

The UF C921 A101 board is typically used in industrial drive / motor control systems. Some application contexts include:

• Integration within ABB ACS series drives, where it acts as the interface between the drive core and field control networks.

• Communication bridging between PLCs and the internal drive logic (i.e. passing data, commands, diagnostics).

• Supporting protocols such as Modbus, Profibus, CANopen for remote monitoring, control, and diagnostics.

• Applying in systems such as pumps, fans, compressors, conveyors, where precise motor control and interlocks are required.

• Use in retrofits or repairs of drives: as a spare / replacement board inside existing ABB ACS drive cabinets.

• In environments where a compact, varnished, protected board is necessary inside drive cabinets.

5. Product Advantages / Strengths

Some advantages and selling points of this module include:

1. Compact & lightweight — being only ~0.3 kg, easy to mount and replace

2. Varnished protection — resists dust, moisture, and industrial contamination

3. Protocol flexibility — supports multiple communication protocols for integration

4. Direct drive integration — internal board tailored to fit ABB ACS drives, ensuring compatibility

5. Low power consumption — minimal energy draw for internal logic

6. Ease of replacement — as a modular board, maintenance and spares management is simplified

7. Firmware support — handles internal logic, diagnostics, error signaling

8. Industrial temperature range — suitable for a wide range of operating conditions

9. Standard warranty / lifecycle — 12-month warranty typical

10. Spare / replacement availability — part number widely listed in industrial automation inventories

6. Related / Peer Models

Below are 5 other models in the same or very closely related ABB interface / control module family (or similar internal boards). (These are speculative or typical parts one might find as alternatives.)

(Note: The exact specs of these models are not publicly verified here; the names are plausible variants in the same family.)

7. Other Popular Models of ABB (Same Brand)

Here are 5 well-known ABB models (from general ABB automation / drive / control domain) that are popular or widely used. These may not be in the same series, but within the brand’s ecosystem: