ABB RAIO-01 64606841 Analog I/O Extension Module

Technical Dossier

Product Details And Specifications

ABB RAIO-01 Series Technical Notes

The ABB RAIO-01 (64606841) is an analog I/O extension module designed for integration with ABB ACS800 series variable frequency drives. It extends the drive's native analog signal handling capacity, enabling precise process control in high-demand industrial environments including petrochemical refineries, nuclear auxiliary systems, pulp and paper mills, and offshore platform motor control centers. The RAIO-01 is mounted directly onto the drive's RMIO control board via a dedicated slot, communicating over ABB's internal drive bus without external wiring overhead. Its compact DIN-rail-compatible form factor and wide input voltage tolerance make it a standard fitment in multi-drive cabinet installations across global heavy industry.

The Evolution of RAIO-01 Architecture

The RAIO-01 belongs to ABB's RMIO-era optional module ecosystem, introduced alongside the ACS800 platform in the late 1990s. Early ACS800 installations relied on the base RMIO-01C/11C control boards for analog I/O, which provided a limited number of differential analog inputs and outputs. As process automation requirements grew — particularly in DCS-integrated environments requiring 4–20 mA loop feedback from multiple field instruments — ABB released the RAIO-01 as a plug-in expansion to double the available analog channel count without requiring a larger drive frame or external I/O marshalling cabinet.

The module uses a 15-pin D-sub connector interface and communicates with the RMIO board via a proprietary serial link. It supports both voltage (0–10 V, ±10 V) and current (0–20 mA, 4–20 mA) signal modes, selectable per channel via internal DIP switches. This architecture remained unchanged through the ACS800's production lifecycle, ensuring backward compatibility across firmware revisions from 3.x through 7.x. With the ACS800 platform now in its end-of-active-production phase (superseded by the ACS880), the RAIO-01 has transitioned into a long-term spare parts category. No direct functional equivalent exists in the ACS880 platform, which uses a different modular I/O architecture (AIAO-01, ADIO-01 series), making RAIO-01 availability critical for installed-base maintenance.

RAIO-01 Full Catalog & Functionalities (SKU List)

The following SKUs represent the RAIO-01 module and its closely associated ABB ACS800 optional I/O and adapter modules. All are verified components within the ABB ACS800 optional module ecosystem:

RAIO-01 / 64606841: Analog I/O extension, 2×AI + 2×AO, ±10V/0–20mA, RMIO slot mount
RDIO-01 / 64606842: Digital I/O extension, 3×DI + 3×DO relay outputs, RMIO slot mount
RDIO-02 / 64606843: Digital I/O extension, 6×DI + 3×DO transistor outputs
RAIO-02: Analog I/O extension, enhanced resolution variant, 12-bit DAC outputs
RTAC-01 / 64606844: Pulse encoder interface module, HTL/TTL, max 200 kHz
RTAC-02: Resolver interface module for closed-loop vector control
RMIO-01C: Standard control board for ACS800-01/04/11 frames
RMIO-11C: Enhanced control board with extended memory for ACS800-17/37
RINT-5611C: IGBT supply unit interface board, ACS800 regenerative units
RDCO-01: DDCS fiber optic communication module, master/follower link
RDCO-02: DDCS fiber optic module, extended channel count
RDCO-03: DDCS fiber optic module, single-channel, cost-reduced variant
RPBA-01: PROFIBUS-DP adapter module, ACS800 fieldbus slot
RCAN-01: CANopen adapter module, DS402 drive profile
RMBP-01: Modbus Plus adapter module
RETA-01: Ethernet adapter module, Modbus TCP / EtherNet/IP
RDNA-01: DeviceNet adapter module, Group 2 slave
RLON-01: LonWorks adapter module, FTT-10 transceiver

Sourcing Hard-to-Find & Obsolete RAIO-01 Parts

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

Q: How is condition confirmed before quotation?
A: Available condition, photos, test records and documentation are checked according to the requested model and sourcing channel before a formal RFQ response.

Quality Control for the RAIO-01 Range

Each RAIO-01 module processed by DriveKNMS undergoes a structured bench test protocol before dispatch. The module is seated into a reference ACS800 drive test rig running RMIO firmware 7.x. Analog input channels are verified across the full signal range (0–10 V, 4–20 mA) using a calibrated signal generator, with output accuracy confirmed against a precision multimeter to ±0.1% of full scale. Digital communication integrity between the RAIO-01 and RMIO board is verified via drive parameter read-back (parameter group 11/12 in ACS800 standard application). The 15-pin D-sub connector is inspected for pin straightness, gold plating integrity, and locking latch function. Boards exhibiting capacitor ESR drift, corroded solder joints, or out-of-tolerance analog offset are either reconditioned or rejected. All passed units are anti-static bagged, labeled with test date and technician ID, and shipped in ESD-safe packaging.