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- RAPI-01C 3AUA0000036340 64607910D
- Auxiliary Power Interface Adapter Board
- Sweden (SE)
- 167 × 45 × 130 mm
- 0.5 kg
- Xiamen, China
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Product Overview
The ABB RAPI-01C 3AUA0000036340 64607910D ACS800 Auxiliary Power Interface Adapter Board is an auxiliary power interface board used in compatible ABB ACS800 drive systems. It supports the external 24 V DC auxiliary power arrangement of the drive control electronics, helping maintain the availability of essential control functions during an interruption of the normal auxiliary supply.
The RAPI-01C is associated with the RDCU drive control unit and its RMIO motor control and I/O board. Its primary purpose is to support the power-failure handling function of the RMIO board. When the 24 V auxiliary supply to the RDCU is interrupted, the RAPI board allows the RMIO electronics to complete the required power-down sequence.
This function is particularly important for preserving fault and alarm information. The drive’s fault and alarm recorder needs sufficient time to write its stored information into flash memory before the control electronics lose their operating power.
In an industrial drive installation, an unexpected interruption of auxiliary power can occur while the main converter is operating or during a system shutdown. The RAPI-01C supports the control unit’s power-failure response, helping prevent the loss of diagnostic records during this process.
The board is an interface and auxiliary power support component rather than an independent drive controller. It does not replace the RDCU, RMIO board, or inverter power section. Its operation depends on the corresponding ABB drive control architecture and correct auxiliary power connections.
When selecting a replacement, engineers should verify the RAPI-01C designation, product identification, board revision, and compatibility with the installed ACS800 control unit. The external 24 V supply arrangement should also be checked against the original drive wiring configuration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | RAPI-01C |
| Product ID | 3AUA0000036340 |
| Previous Product ID | 64607910 |
| Product Type | Auxiliary Power Interface Adapter Board |
| Product Family | ABB ACS800 |
| Product Main Type | ACS800-X04 |
| Board Function | External 24 V Auxiliary Power Interface |
| Associated Control Unit | RDCU |
| Associated Control Board | RMIO |
| Auxiliary Supply | 24 V DC |
| Application | Drive Control Power-Failure Support |
| Dimensions | 167 × 45 × 130 mm |
| Weight | 0.5 kg |
Product Features
- External 24 V Power Interface: Supports the external auxiliary power arrangement associated with the ABB drive control unit.
- RMIO Power-Failure Support: Helps maintain the required power-down functionality of the RMIO board when the RDCU auxiliary supply is interrupted.
- Fault Record Preservation: Allows the fault and alarm recorder sufficient time to write stored information into flash memory.
- RDCU Integration: Works with the ABB RDCU drive control unit and its associated control electronics.
- ACS800 Compatibility: Serves as an auxiliary power interface component in compatible ACS800 converter configurations.
- Dedicated Adapter Board: Provides a specific interface function without replacing the main motor control or inverter electronics.
- Maintenance-Oriented Design: Supports replacement and servicing of the auxiliary power interface within the drive control assembly.
Working Principle
The ABB RAPI-01C operates within the auxiliary power arrangement of the ACS800 drive control system. Its main function is associated with the power-failure response of the RMIO motor control and I/O board.
Normal Auxiliary Power Operation
During normal operation, the RDCU control unit receives its specified 24 V DC auxiliary supply. The RMIO board uses the available control power to perform its assigned motor control, signal processing, and monitoring functions.
The RAPI-01C is incorporated into the corresponding auxiliary power interface arrangement.
Auxiliary Power Interruption
If the 24 V auxiliary supply to the RDCU is interrupted, the RAPI board supports the RMIO power-failure function.
This is important because the control electronics may still need to complete certain internal operations before their supply voltage disappears.
Fault and Alarm Data Preservation
The RMIO board contains the drive’s fault and alarm recording functionality.
During a power interruption, the recorder needs sufficient time to transfer the relevant stored information into flash memory. The RAPI-01C supports this process, reducing the risk of losing diagnostic information during the power-down sequence.
Drive Control System Shutdown
After the required power-failure operations have been completed, the control electronics can proceed through their shutdown sequence.
The RAPI-01C does not independently maintain the entire drive system in operation. Its role is specifically related to auxiliary power support and the RMIO power-failure function.
Role in the ABB ACS800 Drive Control Architecture
The RAPI-01C serves as an auxiliary power interface component in the ABB ACS800 control architecture. It works with the RDCU drive control unit and RMIO motor control and I/O board to support the control electronics during auxiliary supply interruptions.
A simplified system arrangement is:
External 24 V DC Auxiliary Supply → RAPI-01C Auxiliary Power Interface → RDCU / RMIO Control Electronics → Power-Failure Handling and Flash Memory Data Preservation
| System Component | Function |
|---|---|
| ABB RAPI-01C | Auxiliary power interface and RMIO power-failure support |
| RDCU | Drive control unit |
| RMIO Board | Motor control and I/O processing |
| External 24 V DC Supply | Supplies auxiliary power to the control electronics |
| Fault Recorder | Records drive fault information |
| Alarm Recorder | Stores drive alarm information |
| Flash Memory | Stores recorded diagnostic information |
| Inverter Module | Performs power conversion for motor operation |
| CDP-312R Control Panel | Provides local drive operation and parameter access |
| DDCS Optical Communication | Supports communication between compatible drive components |
During normal operation, the control electronics perform their assigned functions using the available auxiliary supply. If this supply is interrupted, the RAPI-01C supports the RMIO board’s power-failure response so that fault and alarm records can be saved before the control electronics shut down.
Industrial Applications
| Application | Typical Use |
|---|---|
| ABB ACS800 Drives | Auxiliary power interface support in compatible drive installations |
| ACS800 Multidrive Systems | Supporting the control electronics of drive units |
| Industrial Motor Control | Supporting auxiliary power-failure handling |
| Manufacturing Plants | Preserving drive diagnostic records during power interruptions |
| Process Industries | Supporting control electronics in continuous process installations |
| Pumping Systems | Supporting auxiliary power arrangements in variable-speed drive systems |
| Industrial Fans | Maintaining the required control power-failure response |
| Material Handling | Supporting drive control electronics in conveying equipment |
| Power Conversion Systems | Supporting auxiliary control power arrangements in converter installations |
| Electrical Maintenance | Facilitating replacement and servicing of ACS800 auxiliary interface boards |
Installation and Maintenance
- Verify the Product Identification: Confirm the RAPI-01C designation and product identification 3AUA0000036340 before replacement.
- Check Drive Compatibility: Verify the ACS800 converter model and the associated RDCU control unit configuration.
- Inspect the Original Board: Compare the existing adapter board, connectors, mounting arrangement, and identification markings with the replacement.
- Verify Auxiliary Power Requirements: Confirm the external 24 V DC auxiliary supply arrangement against the original drive wiring diagram.
- Record Existing Connections: Document the power connections and associated control wiring before removing the original board.
- Isolate the Drive System: Disconnect the equipment from the power supply and follow ABB electrical safety and DC-link discharge procedures.
- Apply ESD Protection: Use appropriate electrostatic discharge precautions when handling the adapter board.
- Inspect the Mounting Area: Check the board mounting points, electrical connectors, and surrounding control electronics for physical damage.
- Install the Replacement Board: Position and secure the RAPI-01C according to the applicable ACS800 hardware installation instructions.
- Check Electrical Connections: Verify the auxiliary power connections and associated interfaces before restoring the control supply.
- Verify Power-Failure Functionality: Check the auxiliary power arrangement and confirm that the RMIO power-failure function operates according to the applicable commissioning procedure.
- Perform Final Inspection: Confirm that the drive control system operates normally and that diagnostic recording functions are available before returning the equipment to service.
Compatible System Components
| Component | Function |
|---|---|
| ABB RAPI-01C | Auxiliary Power Interface Adapter Board |
| ABB RDCU | Drive Control Unit |
| ABB RMIO | Motor Control and I/O Board |
| External 24 V DC Power Supply | Auxiliary power source |
| ABB ACS800 Inverter Module | Performs drive power conversion |
| ABB CDP-312R | Local drive control panel |
| ABB RDCO | DDCS Communication Option |
| ABB APBU | Optical Branching Unit |
| ABB NPBU | Optical Branching Unit |
| ABB Drive Fault Recorder | Records drive fault information |
Recommended Related Models
| Model | Product Type | Typical Application |
|---|---|---|
| ABB RAPI-01 | Auxiliary Power Interface Board | Earlier RAPI interface configuration |
| ABB RAPI-01C 3AUA0000036340 | Auxiliary Power Interface Adapter Board | ACS800 auxiliary power support |
| ABB RDCU-02C | Drive Control Unit | ACS800 inverter control |
| ABB RDCU-12C | Drive Control Unit | ACS800 drive control |
| ABB RMIO-01 | Motor Control and I/O Board | Drive motor control and signal processing |
| ABB RMIO-02 | Motor Control and I/O Board | Drive motor control and I/O interface |
Key Advantages
- Supports the auxiliary power interface arrangement of compatible ACS800 drives.
- Helps maintain the RMIO power-failure handling function.
- Allows fault and alarm information to be written into flash memory during auxiliary power interruption.
- Works with the RDCU drive control architecture.
- Provides a dedicated board-level solution for auxiliary power support.
- Facilitates maintenance of ABB drive control electronics.
Technical FAQs
What is the main function of the ABB RAPI-01C?
The RAPI-01C is an auxiliary power interface board used with compatible ABB drive control units. Its main function is to support the RMIO board’s power-failure handling when the 24 V auxiliary supply to the RDCU is interrupted.
Why is the RAPI-01C important for fault and alarm recording?
When auxiliary power is lost, the RMIO board needs sufficient time to write the contents of its fault and alarm recorder into flash memory. The RAPI-01C supports this power-failure function, helping preserve diagnostic information.
Does the RAPI-01C replace the RDCU or RMIO board?
No. The RAPI-01C is an auxiliary power interface component. The RDCU remains the drive control unit, while the RMIO board performs motor control and I/O functions.
What should be checked when replacing the RAPI-01C?
Check the complete product identification, ACS800 drive configuration, RDCU and RMIO board arrangement, auxiliary 24 V DC wiring, and connector compatibility. The replacement should follow the original hardware configuration.