ABB ACS800 Modules

Technical Dossier

Product Details And Specifications

ABB ACS800 Series: Comprehensive Module Range and Technical Overview

The ABB ACS800 is a family of industrial AC drives engineered for demanding variable-speed applications across heavy process industries. Deployed extensively in chemical plants, oil refineries, pulp and paper mills, nuclear auxiliary systems, and offshore platforms, the ACS800 series occupies a critical position in global industrial automation infrastructure. Its direct torque control (DTC) technology — ABB's proprietary motor control algorithm — delivers precise torque and speed response without the need for an encoder in standard configurations, making it a preferred platform for high-inertia loads and continuous-duty cycles.

The ACS800 product family spans single-drive units (ACS800-01, -02, -04, -07, -11), cabinet-built drives (ACS800-17, -37, -67), and multi-drive configurations (ACS800-04M, -07M), covering power ranges from 0.55 kW to several megawatts. This breadth of configuration has resulted in widespread global installation bases that remain active decades after initial commissioning. DriveKNMS maintains a dedicated inventory of ACS800 spare modules, control boards, and interface cards to support these long-lifecycle installations.

The Evolution of ACS800 Architecture

The ACS800 platform was introduced in the late 1990s as ABB's successor to the ACS600 series, incorporating the second generation of ABB's Direct Torque Control (DTC) algorithm. The initial hardware architecture centered on the RMIO (Main I/O and Control Board) as the primary control interface, supported by a modular backplane that allowed field-replaceable I/O expansion, fieldbus adapters, and encoder interface modules.

Early ACS800 units (pre-2005) used the RMIO-01C and RMIO-02C control boards, which communicated with the power section via a fiber-optic DDCS (Distributed Drive Control System) link. This architecture enabled multi-drive configurations where a single master controller could coordinate multiple inverter units on a common DC bus. The DDCS protocol remains a compatibility constraint: replacement control boards must match the DDCS firmware version of the existing power section to avoid communication faults.

From approximately 2005 onward, ABB introduced revised control board variants (RMIO-11C, RMIO-12C) with expanded memory, improved EMC filtering, and support for additional optional modules. The RDCO (DDCS Communication Option) board was standardized as the interface between the RMIO and external DDCS networks, replacing earlier integrated DDCS ports on some variants.

By the 2010s, the ACS800 entered a mature phase. ABB continued to manufacture spare parts and offer firmware updates, but new development shifted toward the ACS880 platform, which introduced a common architecture (ACx) with unified control hardware across drive families. For end users, this transition created a compatibility boundary: ACS800 control boards are not directly interchangeable with ACS880 hardware, and migration requires engineering assessment of motor parameters, fieldbus configurations, and application macros.

As of 2026, the ACS800 is in its extended lifecycle phase. ABB continues to supply selected spare parts, but lead times for certain control boards and IGBT gate driver assemblies have extended significantly. Third-party suppliers such as DriveKNMS provide an essential sourcing channel for obsolete and long-lead-time ACS800 components.

ACS800 Full Catalog & Functionalities (SKU List)

The following SKUs represent the core spare parts and module types within the ACS800 ecosystem. Each entry reflects a distinct functional role within the drive's control, power, or communication architecture.

Control & Main I/O Boards

• RMIO-01C: Main control board for early ACS800 units; handles DTC algorithm execution, I/O processing, and DDCS fiber-optic communication.
• RMIO-02C: Revised main control board with expanded analog I/O capacity; compatible with ACS800-01/-02/-04 frames R2–R6.
• RMIO-11C: Updated control board variant with enhanced EMC performance and support for additional option slots; replaces RMIO-01C in most retrofit applications.
• RMIO-12C: High-memory control board for complex application macros; used in ACS800 units with advanced process control requirements.

Gate Driver & Power Interface Boards

• GINT-6611C (68577349): Reversible gate driver interface board; controls IGBT firing sequences for regenerative braking and four-quadrant operation in ACS800-11 units.
• AINT-02C: Auxiliary interface board for IGBT gate drive signals in standard (non-regenerative) ACS800 power sections; frames R5–R8.
• AINT-11C: Gate driver auxiliary board for high-power ACS800 frames (R8 and above); includes fault detection and gate voltage monitoring circuits.
• BINT-01C: Brake chopper interface board; manages dynamic braking IGBT control and thermal protection signaling.

Fieldbus & Communication Adapters

• RDCO-01C: DDCS fiber-optic communication option board; enables ACS800 integration into ABB multi-drive and master-follower configurations.
• RDCO-02C: Enhanced DDCS communication board with dual fiber-optic ports; supports ring topology DDCS networks.
• RPBA-01: PROFIBUS-DP adapter module; provides cyclic and acyclic data exchange between ACS800 and PROFIBUS master controllers.
• RCAN-01: CANopen adapter module; used in ACS800 installations integrated with CANopen-based machine control networks.
• RDNA-01: DeviceNet adapter module; enables ACS800 connectivity to Allen-Bradley and other DeviceNet master systems.
• RMBP-01: Modbus Plus adapter; supports legacy Modbus Plus network integration in petrochemical and utility installations.

Encoder & Feedback Interface Modules

• RTAC-01: Pulse encoder interface module; provides closed-loop speed feedback for ACS800 applications requiring encoder-based DTC or speed control.
• RTAC-02: Dual-channel encoder interface; supports master-follower encoder configurations and high-resolution feedback applications.

Power Supply & Auxiliary Boards

• APOW-01C: Auxiliary power supply board; provides regulated 24 VDC and 5 VDC rails to control electronics within the ACS800 power section.
• AINP-01C: Analog input expansion board; adds four additional analog input channels to the RMIO control board via the option slot interface.

Sourcing Hard-to-Find & Obsolete ACS800 Parts

The ACS800 series has been in field service for over 25 years. A significant portion of the installed base operates in facilities where drive replacement is constrained by process continuity requirements, capital expenditure cycles, or the absence of a direct ACS880 migration path due to motor or transformer compatibility. In these environments, access to genuine or equivalent spare parts is a maintenance-critical requirement.

DriveKNMS specializes in sourcing ACS800 components that have been discontinued from ABB's standard spare parts catalog or that carry extended lead times through authorized distribution channels. Our sourcing network covers:

• Decommissioned ACS800 units from industrial plant closures and equipment upgrades, providing a supply of tested, functional boards.
• New-old-stock (NOS) components from authorized distributor inventory liquidations.
• Remanufactured control boards that have been restored to OEM specification, including EPROM/firmware reflashing where applicable.

For GINT-series gate driver boards — including the GINT-6611C (68577349) — DriveKNMS maintains stock specifically for ACS800-11 regenerative drive applications, where the gate driver is a single-point-of-failure component with no field-repairable sub-assembly. Customers are advised to maintain at least one spare GINT board per installed ACS800-11 unit given the extended sourcing lead times for this component.

Quality Control for the ACS800 Range

ACS800 control and power interface boards present specific test challenges due to the integration of high-speed fiber-optic DDCS communication, multi-rail power supply dependencies, and IGBT gate drive timing circuits that must meet precise voltage and timing specifications to avoid power section damage during commissioning.

DriveKNMS applies the following test protocol to all ACS800 boards prior to dispatch:

• Visual and component-level inspection: All boards are examined under magnification for capacitor bulge, solder joint fatigue, corrosion on fiber-optic transceivers, and EPROM socket integrity.
• Power rail verification: APOW and RMIO boards are bench-powered and all regulated output rails (5 V, 15 V, 24 V) are measured against ABB service manual tolerances.
• DDCS loopback test: RDCO and RMIO boards with integrated DDCS ports are tested using a fiber-optic loopback fixture to verify transceiver transmit power and receive sensitivity.
• Gate driver functional test: GINT and AINT boards are tested on a dedicated ACS800 power section test rig, verifying gate pulse timing, fault output response, and thermal sensor signal integrity.
• Firmware version verification: RMIO control boards are checked for firmware version compatibility with the customer's specified ACS800 frame and software version to prevent DDCS communication mismatches.

All tested units are issued a DriveKNMS inspection report documenting test results, firmware version, and any observed cosmetic or component-level findings. Boards that do not pass all test criteria are quarantined and not offered for sale.