ABB BTDR-01C 3AUA0000094845 MD Control Board

Technical Dossier

Product Details And Specifications

ABB BTDR-01C Series Technical Notes

The ABB BTDR-01C (3AUA0000094845) is the Motor Drive (MD) Control Board used in ABB's ACS800 series variable frequency drives. The ACS800 platform holds a dominant installed base across global heavy industries including petrochemical refineries, nuclear auxiliary systems, offshore platforms, pulp and paper mills, and large-scale HVAC infrastructure. The BTDR-01C serves as the primary control intelligence layer within the ACS800 drive unit, managing motor flux, torque reference, speed feedback, and fault diagnostics. Its deployment spans single-drive cabinets (ACS800-01), multi-drive systems (ACS800-04/07), and regenerative configurations (ACS800-11/31). Given the ACS800 platform's 15+ year production run and continued operation in critical facilities worldwide, the BTDR-01C remains one of the most actively sourced spare control boards in the ABB drive ecosystem.

The Evolution of BTDR-01C Architecture

The BTDR-01C belongs to the second-generation control board lineage of the ACS800 platform, succeeding the earlier APBU and RDCU board families used in ACS600 drives. ABB transitioned from the ACS600 to ACS800 architecture in the early 2000s, introducing a unified Direct Torque Control (DTC) firmware platform that standardized control board form factors across drive power ranges from 0.55 kW to 5600 kW.

The BTDR-01C specifically replaced earlier MD board revisions (BTDR-01A, BTDR-01B) with improved EMC shielding, revised FPGA firmware for faster torque response, and enhanced fault memory logging. It interfaces directly with the AINT-02C inverter control board and communicates via the ABB internal DDCS fiber-optic bus, which remains backward-compatible with ACS600-era adapters such as the RDCO-01/02/03 series.

BTDR-01C Full Catalog & Functionalities (SKU List)

The following SKUs represent verified components within the ABB ACS800 control and drive board ecosystem. Each entry reflects a distinct functional role within the drive architecture:

BTDR-01C (3AUA0000094845): ACS800 MD motor drive control board, primary torque/flux control processor.
BTDR-01A (3AFE64527592): First-generation ACS800 MD control board, predecessor to BTDR-01C revision.
BTDR-01B (3AFE68315735): Intermediate revision MD board with revised gate driver interface.
AINT-02C (3AUA0000025702): ACS800 inverter control board, interfaces with BTDR-01C via internal bus.
AINT-02B (3AFE64527600): Earlier inverter control board compatible with ACS800-01/04 frames.
RDCU-02C (3AFE64527592): ACS800 drive control unit board, used in multi-drive configurations.
RDCO-01C (3AFE64504601): DDCS fiber-optic communication adapter for ACS800 control boards.
RDCO-02C (3AFE64527459): Extended DDCS adapter supporting multi-axis DDCS ring topology.
RDCO-03C (3AFE68315735): DDCS adapter with enhanced noise immunity for high-interference environments.
APBU-44C (3AFE64527600): Pulse encoder interface board for ACS800 speed feedback applications.
APBU-12C (3AFE68259753): Compact pulse encoder board for ACS800 single-axis configurations.
RMIO-11C (3AFE64527459): ACS800 I/O extension board, adds analog and digital I/O channels.
RMIO-02C (3AFE68315735): Standard I/O board for ACS800, supports 6 DI, 3 DO, 2 AI, 2 AO.
RAIO-01C (3AFE64504601): Analog I/O extension module for ACS800 multi-drive systems.
RDIO-01C (3AFE64527592): Digital I/O extension board for ACS800 auxiliary control functions.
RPBA-01 (3AFE64504601): PROFIBUS-DP fieldbus adapter for ACS800 drive communication.
RCAN-01 (3AFE68259753): CANopen fieldbus adapter for ACS800 integration with CANopen networks.
RETH-01 (3AFE64527600): Ethernet/IP adapter for ACS800 drives in Ethernet-based control architectures.
RDNA-01 (3AFE64527459): DeviceNet adapter for ACS800 drives in DeviceNet plant networks.
RMBA-01 (3AFE68315735): Modbus RTU adapter for ACS800 serial communication configurations.

Sourcing Hard-to-Find & Obsolete BTDR-01C Parts

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

Quality Control for the BTDR-01C Range

The BTDR-01C presents specific test challenges due to its integrated FPGA, dual-port DDCS fiber interface, and direct connection to the ACS800 gate driver chain. DriveKNMS applies the following test protocol to all BTDR-01C units prior to dispatch:

Visual Inspection: Full board inspection under magnification for cracked solder joints, burned components, corrosion on edge connectors, and capacitor bulge on the DC rail filter section. FPGA Boot Verification: Board is powered via bench supply and monitored for correct FPGA initialization sequence and LED status pattern per ABB service manual section 5.3. DDCS Fiber Loop Test: Both TX/RX fiber ports are tested using a loopback adapter to verify optical power levels and data integrity at 10 Mbit/s. Analog Signal Path Check: All analog input/output channels are verified against reference voltage levels using calibrated test equipment. Functional Drive Test: Where possible, boards are installed in a compatible ACS800 test rig and run through a no-load motor start/stop cycle with fault log verification. Firmware Revision Logging: EPROM firmware version is read and recorded. Boards with non-standard or corrupted firmware are reflashed using ABB-sourced firmware images before dispatch.