FUJI MICREX-SX SA5 Series Modules: SA534062-02 Motherboard

Technical Dossier

Product Details And Specifications

FUJI MICREX-SX SA5 Series: Comprehensive Module Range and Technical Overview

The FUJI MICREX-SX SA5 Series is a high-performance programmable logic controller platform developed by FUJI Electric Co., Ltd. of Japan. It has achieved significant installed-base penetration across global heavy industries including petrochemical complexes, nuclear power auxiliary systems, oil refineries, steel rolling mills, and large-scale water treatment facilities. The SA5 Series is characterized by its high-speed bus architecture, modular rack construction, and deterministic scan-cycle execution — properties that made it a preferred platform for safety-critical and continuous-process applications throughout the 1990s and 2000s. The SA534062-02 is a motherboard (backplane) unit within this series, providing the physical and electrical interconnect infrastructure for CPU, I/O, and communication modules mounted in the SA5 rack system.

The Evolution of MICREX-SX SA5 Architecture

FUJI Electric introduced the MICREX series in the early 1980s as a relay-replacement PLC platform. The architecture evolved through the MICREX-F, MICREX-SX, and ultimately the MICREX-SX SA5 generation, which standardized on a 32-bit CPU core, high-speed SX-bus backplane communication, and IEC 61131-3 compliant programming via the D300win engineering environment. The SA5 rack system uses a passive backplane design — the SA534062-02 motherboard provides the SX-bus signal routing, power distribution rails, and module slot connectors for up to a defined number of I/O and specialty modules per rack. Compatibility constraints exist between early SA5 CPU revisions and later high-density I/O modules; firmware version alignment is required when mixing module generations within the same rack. As of the mid-2010s, FUJI Electric transitioned its primary PLC roadmap toward the MICREX-SX SPH Series and subsequently the MICREX-SX SPB platform, placing the SA5 Series in a mature/end-of-active-production lifecycle. Long-term maintenance support for installed SA5 systems is now the primary commercial driver for SA5 module procurement.

MICREX-SX SA5 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly referenced modules within the FUJI MICREX-SX SA5 Series. Modules are classified by functional category.

CPU & Processor Modules

• SA534062-02: SA5 Series rack motherboard/backplane; SX-bus signal distribution and module slot interconnect board.
• SA534001-01: SA5 CPU module; 32-bit processor, standard scan-cycle execution, D300win compatible.
• SA534001-02: SA5 CPU module, enhanced version; increased program memory capacity over -01 revision.
• SA534002-01: SA5 high-speed CPU module; reduced scan cycle time for fast-response process control applications.

Digital Input (DI) Modules

• SA534010-01: 32-point 24VDC digital input module; sink/source compatible, standard response time.
• SA534010-02: 64-point 24VDC digital input module; high-density DI for large I/O count applications.
• SA534011-01: 16-point 100/120VAC digital input module; for legacy AC field device interfacing.

Digital Output (DO) Modules

• SA534020-01: 32-point 24VDC transistor output module; NPN open-collector, 0.5A per point.
• SA534020-02: 64-point 24VDC transistor output module; high-density DO configuration.
• SA534021-01: 16-point relay output module; 2A per point, for AC/DC load switching.

Analog Input (AI) Modules

• SA534030-01: 8-channel analog input module; 4–20mA / 0–10V selectable, 12-bit resolution.
• SA534030-02: 16-channel analog input module; high-channel-count AI for process variable monitoring.
• SA534031-01: 8-channel thermocouple input module; K/J/T/E/R/S/B type, cold-junction compensated.

Analog Output (AO) Modules

• SA534040-01: 4-channel analog output module; 4–20mA / 0–10V, 12-bit resolution, for control valve and VFD setpoint output.
• SA534040-02: 8-channel analog output module; expanded AO capacity for multi-loop control configurations.

Communication & Network Modules

• SA534050-01: SX-bus communication adapter; inter-rack expansion link module for distributed SA5 rack configurations.
• SA534051-01: Ethernet communication module; 100BASE-TX, Modbus TCP and FUJI proprietary protocol support.
• SA534052-01: PROFIBUS-DP master module; for integration with PROFIBUS field device networks.

Power Supply Modules

• SA534060-01: SA5 rack power supply module; 24VDC input, regulated 5VDC/24VDC internal bus output.
• SA534061-01: SA5 redundant power supply module; hot-standby configuration for high-availability systems.

Sourcing Hard-to-Find & Obsolete MICREX-SX SA5 Parts

The FUJI MICREX-SX SA5 Series has entered the mature/end-of-production phase of its lifecycle. FUJI Electric no longer manufactures the majority of SA5 Series modules as new production units. For operators of installed SA5 systems — particularly in refineries, chemical plants, and power generation facilities with 20–30 year asset lifecycles — sourcing replacement modules through the secondary market is the primary maintenance strategy. DriveKNMS maintains a dedicated inventory of SA5 Series modules including the SA534062-02 motherboard and associated CPU, I/O, communication, and power supply units. All units are sourced from decommissioned systems, tested installations, and authorized surplus channels. DriveKNMS provides lifecycle extension support including cross-reference identification, firmware revision matching, and compatibility verification between SA5 module generations — critical for avoiding bus communication faults when replacing modules in mixed-revision racks.

Quality Control for the MICREX-SX SA5 Range

The SA5 Series backplane and bus communication modules — including the SA534062-02 motherboard — require specialized test procedures due to the complexity of the SX-bus signal integrity requirements. DriveKNMS applies the following verification protocol to all SA5 modules prior to dispatch: (1) Visual inspection of backplane connector pins, PCB traces, and capacitor condition; (2) Power-on functional test using a reference SA5 rack with known-good CPU and I/O modules; (3) SX-bus communication integrity verification — all module slots are exercised to confirm signal continuity and absence of bus errors; (4) Burn-in cycle under rated load conditions to screen for latent component failures; (5) Firmware and hardware revision documentation — each unit is labeled with its confirmed revision code to support customer compatibility planning. Modules that do not pass all five stages are quarantined and not offered for sale.

For procurement inquiries, cross-reference requests, or lifecycle support for FUJI MICREX-SX SA5 Series modules including the SA534062-02:

• Email: [email protected]
• WhatsApp: +86 18359293191
• Web: driveknms.com