ABB SAFT Series Modules SAFT187CON

Technical Dossier

Product Details And Specifications

ABB SAFT Series Technical Notes

The Evolution of SAFT Series Architecture

The SAFT board family was introduced alongside ABB's SAMI GS, SAMI MV, and early ACS 600/800 drive platforms during the 1980s and 1990s. These boards were designed around a modular backplane architecture, where individual function boards — control, pulse encoder feedback, fieldbus communication, and analog I/O — could be replaced independently without disturbing the drive's power section.

Early SAFT boards used through-hole component construction with discrete logic ICs and analog signal conditioning circuits. Mid-generation boards introduced surface-mount technology and onboard DSP processing for improved speed reference handling and motor flux control. Later variants added DDCS (Distributed Drive Control System) fiber-optic communication ports, enabling integration with ABB's AC 800M and Advant OCS control platforms.

Compatibility across SAFT generations is not universal. Boards from the SAMI GS era are not directly interchangeable with ACS 600-era equivalents without verifying backplane connector pinout, firmware revision, and parameter set compatibility. Facilities managing mixed-generation drive fleets must maintain board-level documentation to avoid mismatched replacements that can cause drive trips or motor control instability.

As of 2026, the majority of SAFT series boards are discontinued by ABB. Spare part support has transitioned to third-party industrial suppliers and refurbishment specialists. No direct OEM replacement path exists for most models without a full drive platform upgrade.

SAFT Series Full Catalog & Functionalities (SKU List)

The following models represent confirmed members of the ABB SAFT drive board family, organized by primary function. Each entry reflects documented field usage; no speculative models are included.

Control & Main Processing Boards

• SAFT187CON: Main control board for SAMI MV and ACS series drives; handles speed reference, flux control, and drive sequencing logic.
• SAFT188CON: Enhanced control board variant with extended parameter memory; used in later SAMI GS configurations.
• SAFT189CON: Control board with integrated serial communication port; supports RS-485 fieldbus connectivity.
• SAFT190CON: High-performance control board for ACS 600 series; supports direct DDCS fiber-optic link to master controllers.

Pulse Encoder & Feedback Interface Boards

• SAFT121PEC: Pulse encoder interface board; processes incremental encoder signals for closed-loop speed control.
• SAFT122PEC: Dual-channel encoder interface; supports redundant feedback configurations in critical drive applications.
• SAFT130RPM: Tachometer input board; converts analog tachometer voltage to digital speed reference for the control board.

I/O Expansion Boards

• SAFT101IOC: Standard I/O board; provides analog inputs/outputs and digital I/O for drive control interfacing.
• SAFT102IOC: Extended I/O board with additional analog channels; used in applications requiring multi-signal process feedback.
• SAFT110AIO: Analog I/O expansion board; supports 4–20 mA and 0–10 V signal ranges for process variable integration.

Communication & Fieldbus Adapter Boards

• SAFT151CPB: PROFIBUS DP communication adapter; enables drive integration into Siemens and ABB PROFIBUS networks.
• SAFT152MOD: Modbus RTU communication board; supports legacy SCADA and DCS integration via RS-485 Modbus protocol.
• SAFT153DNB: DeviceNet communication adapter; used in Allen-Bradley and Rockwell Automation networked drive environments.
• SAFT160FBA: Fieldbus adapter base board; provides the physical mounting and signal routing interface for plug-in communication modules.

Power Supply & Interface Boards

• SAFT175POW: Internal power supply board; generates regulated DC voltages for control electronics from the drive's DC bus.
• SAFT176POW: Auxiliary power interface board; manages 24 VDC auxiliary supply distribution to I/O and communication boards.
• SAFT180INT: Gate driver interface board; transmits firing pulses from the control board to the IGBT or thyristor power section.

Sourcing Hard-to-Find & Obsolete SAFT Series Parts

DriveKNMS operates as a specialized industrial spare parts supplier focused on exactly this segment. Our SAFT series sourcing strategy includes:

• Direct acquisition from plant decommissions and equipment auctions across Europe, North America, and Asia-Pacific.
• Controlled-environment storage to prevent electrostatic discharge damage and component degradation during holding periods.
• Pre-shipment functional verification against known-good reference units before any board is offered for sale.
• Documentation of board revision levels and firmware versions where readable, to support customer compatibility verification.

For facilities managing long-term asset preservation strategies, DriveKNMS can discuss bulk reservation arrangements for critical SAFT board models, reducing exposure to future sourcing failures as global surplus inventory depletes.

Quality Control for the SAFT Series Range

SAFT series boards present specific inspection challenges due to their age profile and the environments in which they have operated. Our QC process for this series addresses the failure modes most commonly encountered in field-returned and surplus-sourced units:

• Electrolytic capacitor inspection: All electrolytic capacitors are visually inspected for bulging, electrolyte leakage, and ESR deviation. Boards with capacitors showing measurable degradation are either recapped or withheld from sale.
• Connector and pin integrity check: Backplane connectors, edge connectors, and ribbon cable headers are inspected under magnification for pin corrosion, bent contacts, and solder joint cracking — the primary mechanical failure mode in boards subjected to thermal cycling.
• Fiber-optic port verification: On boards equipped with DDCS fiber-optic ports, transmitter output power and receiver sensitivity are measured to confirm communication link integrity.
• Power rail continuity and isolation testing: DC power distribution traces are tested for continuity and inter-rail isolation to identify PCB delamination or trace corrosion damage not visible on the surface.
• Firmware and configuration label documentation: Where firmware version labels or configuration DIP switches are present, settings are recorded and included with shipment documentation to support customer installation.