ABB SNAZ Series Modules

Technical Dossier

Product Details And Specifications

ABB SNAZ Series: Comprehensive Module Range and Technical Overview

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.

Sourcing Hard-to-Find & Obsolete SNAZ Parts

DriveKNMS maintains a dedicated inventory program for ABB SNAZ series modules that have been discontinued or placed on extended lead-time by ABB's authorized distribution network. As the ACS 600 and ACS 800 drive platforms transition from active production to lifecycle support status, procurement of SNAZ boards through standard channels becomes increasingly unreliable. DriveKNMS sources SNAZ modules through verified industrial surplus channels, decommissioned plant asset recovery, and long-term warehousing partnerships. All units are catalogued by hardware revision code and firmware compatibility level prior to listing. For end-users operating SNAZ-based systems in critical process environments — refineries, power generation, water treatment — DriveKNMS provides documented traceability records and revision-matched replacements to minimize integration risk. Emergency same-day quotation is available for confirmed critical spares requirements.

Quality Control for the SNAZ Range

ABB SNAZ boards present specific test challenges due to their multi-layer PCB construction, DDCS fiber-optic transceiver circuits, and EEPROM-resident parameter sets. DriveKNMS applies a structured inspection and functional verification protocol to all SNAZ units prior to dispatch. Visual inspection covers solder joint integrity, capacitor condition, connector pin alignment, and conformal coating status. Electrical testing includes supply rail verification (±15 VDC, +5 VDC), analog channel linearity checks, and digital I/O logic-level confirmation. For boards with DDCS capability, fiber-optic transmitter power output is measured against ABB's published optical budget specifications. EEPROM parameter integrity is verified where applicable using ABB DriveDebug software. Units exhibiting marginal performance on any test parameter are quarantined and not offered for sale. Test records are retained and available upon request for quality-critical procurement processes.