ABB RINT-5611C 68597714C: ACS Drive Interface Board

Technical Dossier

Product Details And Specifications

ABB RINT Series: Comprehensive Module Range and Technical Overview

The ABB RINT series comprises option and interface boards designed for integration into ABB's industrial AC drive platforms, including the ACS600, ACS800, and ACS880 families. These boards are deployed across heavy-process industries — petrochemical refineries, nuclear auxiliary systems, pulp and paper mills, offshore platforms, and steel rolling lines — where drive uptime is a critical operational parameter. The RINT designation covers a range of functions: motor control interface boards, fieldbus adapter interfaces, I/O extension boards, and encoder feedback modules. Their backplane-compatible architecture allows hot-swap replacement in many configurations, reducing mean time to repair (MTTR) in continuous-process environments.

The Evolution of RINT Architecture

The RINT board family was introduced alongside the ACS600 platform in the mid-1990s as ABB standardized its drive option board interface. The original RINT-5xxx series established the physical form factor and 24 VDC logic supply standard that persists across subsequent generations. With the ACS800 platform (launched ~2000), ABB expanded the RINT catalog to include DDCS (Distributed Drive Control System) fiber-optic communication boards and resolver/encoder interface variants. The ACS880 generation (post-2013) introduced the RINT-5xxx C-revision boards, which added enhanced EMC filtering and revised firmware compatibility for the RDCU-02C drive control unit. Backward compatibility between RINT generations is partial: mechanical form factor is preserved, but firmware and DDCS protocol versions must be matched to the host drive control board. End-of-life (EOL) notices for first-generation RINT-5xxx boards were issued between 2015–2019; however, installed base demand in legacy ACS600/ACS800 systems sustains aftermarket supply requirements through at least 2030.

RINT Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced models within the ABB RINT interface board series, classified by function:

Motor Control Interface Boards

• RINT-5611C (68597714C): MC (Motor Control) interface board for ACS800/ACS880 drive control units; interfaces RDCU-02C to the IGBT gate driver board.
• RINT-5521: Motor control interface board, ACS600 platform; earlier revision without C-suffix EMC enhancements.
• RINT-5611: Predecessor to RINT-5611C; compatible with RDCU-02 (non-C revision) control units.
• RINT-5621: High-power motor control interface board for ACS800 R8i–R11i frame sizes.

Encoder / Resolver Feedback Boards

• RINT-5411: Pulse encoder interface board; supports HTL/TTL incremental encoders up to 500 kHz input frequency.
• RINT-5421: Resolver interface board for ACS800 closed-loop vector control applications.
• RINT-5431: Sin/cos encoder interface board; used in high-precision positioning drives.

DDCS Fiber-Optic Communication Boards

• RINT-5311: DDCS fiber-optic link board; connects drive to ABB AC800M / Advant OCS master controllers.
• RINT-5312: Dual-channel DDCS board for redundant communication topologies in ACS800 multi-drive systems.
• RINT-5321: DDCS board with extended ring topology support; used in large ACS800 drive line-ups.

I/O Extension Boards

• RINT-5211: Digital I/O extension board; adds 6 DI / 3 DO to the ACS800 standard I/O complement.
• RINT-5221: Analog I/O extension board; provides 2 AI (±10 V / 0–20 mA) and 2 AO channels.
• RINT-5231: Combined analog/digital I/O board for ACS600 retrofit applications.

Power Supply / Auxiliary Boards

• RINT-5111: Auxiliary 24 VDC power supply board for RDCU control section; used in ACS800 frames R2–R6.
• RINT-5121: Redundant power feed board; supports dual 24 VDC input for high-availability drive configurations.
• RINT-5131: Internal power distribution board for ACS800 R7i–R11i cabinet-mounted drives.

Sourcing Hard-to-Find & Obsolete RINT Parts

DriveKNMS maintains a dedicated inventory program for ABB RINT series boards that have reached end-of-production status. For first-generation RINT-5xxx (non-C revision) boards, OEM new-old-stock (NOS) units are sourced from decommissioned ACS600 and ACS800 installations globally. Each unit undergoes provenance verification before listing. For C-revision boards such as the RINT-5611C 68597714C, DriveKNMS stocks both OEM-new and factory-refurbished units with full traceability documentation. Customers operating legacy ACS600 systems beyond OEM support windows can engage DriveKNMS for long-term supply agreements (LTA), ensuring a defined annual allocation of critical interface boards for planned maintenance cycles. Emergency same-day dispatch is available for in-stock units to minimize unplanned downtime in continuous-process facilities.

Quality Control for the RINT Range

RINT series boards present specific test challenges due to their role as the signal bridge between the drive's digital control section and high-voltage gate driver circuitry. DriveKNMS applies the following test protocol to all RINT boards prior to dispatch:

• Visual inspection: PCB trace integrity, capacitor condition, connector pin alignment, and conformal coating assessment under UV light.
• Power-on functional test: Board is energized at rated 24 VDC; logic supply rails (5 V, 3.3 V) are verified against OEM tolerance bands.
• DDCS loopback test (communication boards): Fiber-optic TX/RX pairs are tested at rated baud rate using ABB DDCS protocol emulation.
• Gate signal integrity test (MC interface boards): PWM gate pulse outputs are verified for timing accuracy and isolation integrity using a calibrated oscilloscope.
• Encoder signal simulation (feedback boards): Simulated encoder/resolver signals are injected and output fidelity is measured against OEM specifications.
• Burn-in cycle: All refurbished units undergo a 48-hour thermal cycling burn-in at 40°C ambient prior to final QC sign-off.