ABB SNAZ-812 F

Technical Dossier

Product Details And Specifications

ABB SNAZ Series Technical Notes

The ABB SNAZ series represents a family of PC-based drive interface and control boards deployed extensively across global heavy industry sectors, including petrochemical refineries, nuclear power auxiliary systems, pulp and paper mills, and large-scale cement production facilities. These boards serve as the computational and signal-processing backbone within ABB's AC drive and DCS integration architectures. Installed base figures across Europe, Asia-Pacific, and the Middle East confirm the SNAZ series as a long-cycle industrial asset, with many units remaining in active service well beyond their original design lifecycle. The series interfaces directly with ABB's SNAT, AINT, RDCO, and RMIO module families, making it a critical node in multi-axis drive systems and distributed control topologies.

The Evolution of SNAZ Architecture

The SNAZ series was introduced as part of ABB's drive control platform expansion during the mid-1990s, targeting high-reliability applications where standard PLC I/O was insufficient for real-time drive feedback loops. Early revisions (SNAZ-800 range) were designed around ISA-bus and proprietary ABB backplane protocols, providing analog and digital interface channels for ACS 600 and ACS 800 series drives. As industrial computing migrated toward more open architectures, ABB revised the SNAZ platform to support DDCS (Distributed Drive Control System) fiber-optic communication, enabling deterministic data exchange between drive inverter units and supervisory control layers.

Mid-generation variants introduced enhanced EMC shielding, wider operating temperature tolerance (−10°C to +55°C), and improved EEPROM-based parameter retention. Later revisions in the SNAZ-810 to SNAZ-820 range incorporated onboard diagnostics LEDs and fault-logging registers accessible via ABB's DriveWindow and DriveDebug toolchains. Compatibility with legacy SNAT-600 and SNAT-800 backplanes was maintained through hardware revision cycles, though firmware dependencies require careful version matching during replacement. As the ACS 800 platform has entered its mature/end-of-active-production phase, the SNAZ series is now primarily sourced as spare parts inventory for lifecycle extension and unplanned maintenance scenarios.

SNAZ Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly referenced models within the ABB SNAZ series. Each entry reflects the module's primary functional role within drive and control system architectures:

SNAZ-812 F: PC drive interface board, ACS 800 series, DDCS fiber-optic channel support.
SNAZ-811: Base PC drive board, analog I/O interface, ACS 600/800 backplane compatible.
SNAZ-812: Enhanced PC drive board, dual-channel signal processing, onboard diagnostics.
SNAZ-813: High-speed drive control board, extended temperature range, fault-log register.
SNAZ-814: Drive interface board with expanded digital I/O, DDCS protocol support.
SNAZ-815: PC board variant with EEPROM parameter storage, ACS 800 firmware compatible.
SNAZ-816: Drive control board, EMC-hardened design, industrial cabinet mount.
SNAZ-817: Analog reference board, 16-bit resolution, multi-axis drive coordination.
SNAZ-818: Digital I/O expansion board, 24 VDC logic, SNAT backplane interface.
SNAZ-819: Communication interface board, DDCS fiber ring topology, ACS 800 compatible.
SNAZ-820: Advanced PC drive board, integrated watchdog timer, hot-swap capable.
SNAZ-821: Redundant control board, dual-processor architecture, safety-rated applications.
SNAZ-822: Power supply interface board, DC bus monitoring, ACS 800 drive systems.
SNAZ-823: Signal conditioning board, encoder feedback interface, servo drive applications.
SNAZ-824: Multi-protocol communication board, PROFIBUS DP and DDCS dual support.
SNAZ-825: Diagnostic and monitoring board, real-time fault capture, DriveWindow compatible.