ABB SAFT 190 Modules SAFT190APC

Technical Dossier

Product Details And Specifications

ABB SAFT 190 Series Technical Notes

The ABB SAFT 190 series is a core component family within ABB's AC drive and DCS control architecture, deployed extensively across global heavy industry including petrochemical refineries, nuclear auxiliary systems, pulp and paper mills, and offshore platforms. Originally developed as part of ABB's SAMI/SAFT drive control ecosystem, the SAFT 190 board set occupies a critical position in the ABB ACS 600, ACS 800, and legacy SAMI GS/TS drive platforms. Installed base counts in the tens of thousands of units globally, making long-term spare parts availability a primary operational concern for plant maintenance engineers and reliability teams.

The Evolution of SAFT 190 Architecture

The SAFT 190 board family was introduced in the early 1990s as ABB standardized its drive control electronics across the SAMI and ACS product lines. The architecture is built around a modular backplane design, where individual function cards — power supply, pulse encoder interface, I/O expansion, and fieldbus adapters — slot into a common chassis. Early revisions (Rev A/B) used through-hole component technology; later revisions (Rev C onward) transitioned to surface-mount devices, improving noise immunity and reducing board footprint.

Compatibility between hardware revisions is constrained by firmware version dependencies. SAFT 190 boards operating in ACS 600 drives require firmware 5.x or later for full feature parity; earlier SAMI GS installations may run firmware 3.x, which is incompatible with Rev D+ boards without a parameter reset. As ABB migrated its drive platform to the ACS 880 and ACS 580 families in the 2010s, the SAFT 190 series entered a maintenance-only lifecycle phase. ABB ceased active production of most SAFT 190 variants by approximately 2018, transitioning support to the AINT, RDCO, and AIMA board families used in current-generation drives.

SAFT 190 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked models within the SAFT 190 series. Each entry reflects the module's primary function within the drive control architecture.

Power Supply & Control Boards

• SAFT190APC: Auxiliary power supply card; provides regulated DC rails to SAFT 190 backplane logic circuits.
• SAFT190CPB: Central processor board; executes drive control algorithms and manages I/O bus arbitration.
• SAFT190CPD: Enhanced central processor board; Rev D with expanded RAM and faster cycle time vs. CPB.
• SAFT190MEB: Main electronics board; integrates gate drive signal conditioning and fault detection logic.
• SAFT190MEC: Revised main electronics board; Rev C with improved EMC filtering on gate drive outputs.

I/O Expansion Modules

• SAFT190DIO: Digital I/O expansion card; 16 DI / 8 DO, 24 VDC logic, DIN rail mountable within chassis.
• SAFT190AIO: Analog I/O card; 4 AI (±10 V / 4–20 mA), 2 AO (±10 V), 12-bit resolution.
• SAFT190TAI: Thermocouple analog input card; supports J, K, T type thermocouples for motor thermal monitoring.
• SAFT190ENC: Pulse encoder interface card; supports incremental encoders up to 10,000 PPR for closed-loop speed control.

Communication & Fieldbus Adapters

• SAFT190PFB: PROFIBUS-DP adapter card; supports DP-V0/V1, baud rates to 12 Mbit/s, GSD file available.
• SAFT190MFB: Modbus RTU/TCP adapter; RS-485 physical layer, configurable baud rate 9600–115200.
• SAFT190DNB: DeviceNet adapter card; Group 2 Only server, 125/250/500 kbit/s selectable.
• SAFT190CAB: CANopen adapter; DS301 profile, supports PDO/SDO communication for motion coordination.

Auxiliary & Interface Boards

• SAFT190FIO: Fiber optic I/O interface; converts TTL gate signals to fiber for high-voltage isolation in IGBT gate drive chains.
• SAFT190OPT: Option board interface; provides physical and logical slot for third-party option card integration.
• SAFT190PSU: Standalone 24 VDC power supply unit; external chassis mount, feeds SAFT 190 backplane in redundant configurations.
• SAFT190RLY: Relay output expansion card; 6 × SPDT relays, 250 VAC / 5 A rated, for external contactor control.

Quality Control for the SAFT 190 Range

SAFT 190 boards present specific test challenges due to their multi-layer PCB construction, backplane bus interface, and mixed analog/digital signal paths. DriveKNMS applies the following verification protocol to all SAFT 190 units prior to dispatch:

• Visual inspection under 10× magnification: solder joint integrity, capacitor ESR check, relay contact condition.
• Powered bench test: board energized at rated DC input; all output rails measured against ABB specification tolerances (±2%).
• Backplane bus communication test: board inserted into a reference SAFT 190 chassis; CPB handshake and I/O bus arbitration verified via ABB DriveWindow diagnostic software.
• Functional load test: for APC and PSU variants, output current loaded to 80% of rated capacity for 30-minute soak period.
• Firmware version logging: CPU and option boards have firmware version recorded and included with shipment documentation.
• ESD packaging: all boards shipped in anti-static bags with humidity indicator cards, double-boxed for international freight.