Yokogawa MW100 Modules MW100-E-3W/C2

Technical Dossier

Product Details And Specifications

Yokogawa MW100 Series Technical Notes

The Yokogawa MW100 is a PC-based data acquisition (DAQ) and control system designed for continuous, long-term monitoring in demanding industrial environments. It is deployed across global heavy industries including petrochemical plants, nuclear power facilities, oil refineries, offshore platforms, and large-scale utilities. The MW100 operates as a standalone unit or integrates into Yokogawa's broader SCADA and DCS ecosystems via Ethernet, making it a standard reference platform for distributed measurement infrastructure. Its modular I/O architecture allows engineers to configure mixed analog, digital, and communication channels within a single chassis, reducing panel space and wiring complexity. The system supports simultaneous multi-channel recording at high sample rates, making it suitable for both process monitoring and transient fault capture.

The Evolution of MW100 Architecture

The MW100 platform was introduced by Yokogawa as a successor to the MX100 portable DAQ series, transitioning from portable field instruments to rack-mountable, network-connected acquisition nodes. Early MW100 configurations relied on RS-232 and RS-485 serial communication for host connectivity. Subsequent hardware revisions introduced 100BASE-TX Ethernet as the primary interface, enabling integration with plant-wide historian systems and OPC-DA/OPC-UA data servers.

MW100 Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified MW100 module range, classified by functional category. Each entry reflects a distinct hardware configuration available within the MW100 chassis ecosystem.

Analog Input Modules

• MW100-E-3W/C2: 3-wire RTD/resistance input, 6-channel, high-accuracy temperature measurement module.
• MW100-E-4W/C2: 4-wire RTD input, 6-channel, for precision low-resistance sensor applications.
• MW100-E-TC/C2: Thermocouple input, 10-channel, supports K/J/T/E/R/S/B/N/W types with CJC.
• MW100-E-DC/C2: DC voltage/current input, 10-channel, range ±10 V / 4–20 mA selectable per channel.
• MW100-E-DV/C2: High-speed DC voltage input, 10-channel, 10 ms/channel scan rate.
• MW100-E-ST/C2: Strain gauge input, 6-channel, for load cell and pressure transducer applications.
• MW100-E-PL/C2: Pulse/frequency input, 6-channel, for flow meters and rotary encoders.

Digital I/O Modules

• MW100-E-3W/C2 (Digital Output variant): 3-wire digital output, 6-channel, relay or open-collector output for alarm and control actuation.
• MW100-E-DI/C2: Digital input, 16-channel, 24 VDC logic level, for contact and proximity sensor interfacing.
• MW100-E-DO/C2: Digital output, 16-channel, transistor open-collector, 24 VDC / 100 mA per channel.
• MW100-E-RY/C2: Relay output, 8-channel, SPDT contacts, 250 VAC / 3 A rated for alarm annunciation.

Communication & Interface Modules

• MW100-E-RS/C2: RS-232C/RS-485 serial communication module for legacy instrument integration.
• MW100-E-GP/C2: GPIB interface module for laboratory instrument bus connectivity.

Power Supply & Mainframe Units

• MW100-M1: MW100 mainframe unit, 6-slot, 100–240 VAC universal input power supply, Ethernet port.
• MW100-M2: MW100 mainframe unit, 6-slot, DC power input variant (24 VDC), for battery-backed or UPS-fed installations.
• MW100-E-PS/C2: Auxiliary power supply expansion module for high-channel-count configurations.

Quality Control for the MW100 Range

MW100 modules present specific test challenges due to their multi-channel backplane bus architecture and mixed-signal I/O design. DriveKNMS applies the following verification procedures to all MW100 units prior to dispatch:

• Backplane communication test: Each module is seated in a reference MW100-M1 mainframe and polled via Ethernet to confirm slot recognition, channel enumeration, and firmware handshake completion.
• Channel-level signal injection: For analog input modules (RTD, TC, DC), calibrated signal sources are applied to each channel individually. Output values are compared against Yokogawa factory calibration tolerances (typically ±0.1% of full scale).
• Digital I/O functional test: DI modules are tested with 24 VDC contact simulation across all 16 channels. DO and relay modules are tested for switching continuity and contact resistance (<100 mΩ).
• Isolation verification: Channel-to-channel and channel-to-chassis isolation resistance is measured at 500 VDC to confirm dielectric integrity.
• Firmware version logging: Each unit's embedded firmware version is recorded and included in the shipment documentation to allow the end-user to assess compatibility with their mainframe firmware revision.