SHARP ZW Series Output Modules

Technical Dossier

Product Details And Specifications

SHARP ZW Series: Comprehensive Module Range and Technical Overview

The SHARP ZW Series represents SHARP Corporation's dedicated line of programmable logic controllers and I/O expansion modules, engineered for demanding industrial environments including chemical processing plants, petroleum refineries, power generation facilities, and heavy manufacturing operations. Deployed extensively across Asia-Pacific and global OEM installations throughout the 1980s and 1990s, the ZW Series established a significant installed base in process automation, machine control, and discrete manufacturing. Its modular rack-based architecture allowed system integrators to configure control systems with precise I/O density, making it a preferred platform for mid-scale automation projects requiring long-term operational stability.

Despite the series entering its end-of-life phase, tens of thousands of ZW Series units remain in active service within legacy production lines where full system replacement is cost-prohibitive. DriveKNMS maintains a dedicated inventory of ZW Series modules to support lifecycle extension programs for these installations.

The Evolution of ZW Series Architecture

The SHARP ZW Series succeeded the earlier JW Series, inheriting its parallel backplane bus architecture while introducing improved scan cycle performance and expanded I/O addressing. Early ZW configurations relied on dedicated CPU modules paired with fixed-density I/O racks, with communication limited to proprietary SHARP link protocols. Mid-generation revisions introduced analog I/O capability and limited support for RS-232C and RS-422 serial interfaces, enabling basic SCADA integration.

Later ZW variants incorporated enhanced memory capacity and optional Ethernet adapters, though these remained peripheral to the core backplane design. Compatibility between early and late ZW rack generations is constrained by backplane bus voltage tolerances and slot addressing schemes — a critical consideration when sourcing replacement modules for mixed-generation installations. The ZW Series has no direct successor within SHARP's product line following SHARP's exit from the industrial automation market; migration paths typically lead to Mitsubishi MELSEC Q/iQ-R, Omron CJ/NJ, or Siemens S7-300/400 platforms.

ZW Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the SHARP ZW Series. Modules are classified by functional category:

CPU / Controller Modules

• ZW-401CU: 40-point CPU unit, base controller for ZW rack systems
• ZW-641CU: 64-point CPU unit, expanded program memory and I/O capacity
• ZW-322CU: 32-point compact CPU, suited for standalone machine control

Digital Output (DO) Modules

• ZW-162S: 16-point transistor output module, sink type, 24VDC load
• ZW-164S: 16-point transistor output module, source type, 24VDC load
• ZW-161S: 16-point relay output module, 250VAC/30VDC contact rating
• ZW-16DT1: 16-point mixed transistor output, DIN rail mount variant

Digital Input (DI) Modules

• ZW-20EX1: 20-point DC input module, 24VDC, sink/source compatible
• ZW-20AT1: 20-point AC input module, 100–240VAC input range
• ZW-28AT1: 28-point AC input module, high-density rack configuration

Analog I/O Modules

• ZW-80DA1: 8-channel analog output, 0–10V / 4–20mA selectable
• ZW-40DA1: 4-channel analog output, 12-bit resolution
• ZW-20DA1: 2-channel analog output, compact form factor
• ZW-162MC: 16-point mixed I/O module with analog conversion support

Communication & Positioning Modules

• ZW-24CM1: Serial communication module, RS-232C/RS-422 dual port
• ZW-40PG1: Pulse output positioning module, 4-axis open-loop control

Sourcing Hard-to-Find & Obsolete ZW Series Parts

SHARP discontinued active production and support for the ZW Series following its withdrawal from the industrial automation sector. Official spare parts channels have been closed for over a decade, leaving end-users dependent on third-party distributors and refurbished inventory specialists for ongoing maintenance.

DriveKNMS operates a dedicated procurement and refurbishment program for SHARP ZW Series modules. Our sourcing network spans decommissioned plant inventories, authorized reseller liquidations, and cross-regional warehouse networks across Asia, Europe, and North America. Each unit sourced through DriveKNMS undergoes condition assessment prior to listing, with refurbished units processed through our in-house restoration workflow.

For obsolete ZW Series models with no available new-old-stock (NOS) supply, DriveKNMS provides functional equivalency analysis to identify compatible substitute modules from active product lines, minimizing system downtime during critical maintenance windows.

Quality Control for the ZW Series Range

ZW Series modules present specific testing challenges due to their proprietary backplane bus protocol and the age-related degradation patterns common in CMOS-based PLC hardware from this era. DriveKNMS applies a structured multi-stage inspection protocol to all ZW Series inventory:

• Visual Inspection: PCB examination for capacitor bulge, corrosion, trace damage, and connector wear
• Power-On Functional Test: Module energized within a ZW-compatible test rack; LED status and self-diagnostic outputs verified
• I/O Point Verification: Each input and output channel tested individually against rated voltage and current specifications
• Communication Bus Test: Backplane data integrity verified via loopback and master-slave polling simulation
• Burn-In Cycle: Refurbished units subjected to 48-hour continuous operation under load prior to dispatch

All tested units are issued a DriveKNMS inspection report and shipped with ESD-protective packaging.