Yokogawa 915U-2-900US Radio Telemetry Module

Product Details

915U-2-900US Product Description

The Yokogawa 915U-2-900US is a high-performance wireless radio telemetry module engineered for industrial energy control and smart production line optimization. Operating on the 900 MHz ISA100.11a wireless protocol, this module delivers reliable, low-latency data transmission across demanding factory environments — enabling real-time energy monitoring, load management, and predictive maintenance without the constraints of wired infrastructure.

Designed for process industries, energy utilities, and discrete manufacturing, the 915U-2-900US integrates seamlessly into existing automation architectures. It bridges field-level instrumentation with upper-layer control and energy management systems, reducing invisible energy waste and improving overall equipment effectiveness (OEE) across the production line.

In a modern smart factory, energy efficiency is not a single-device achievement — it is a system-level outcome. The Yokogawa 915U-2-900US plays a central role in this ecosystem by acting as the wireless data backbone between field instruments and the control layer.

When paired with the Yokogawa YFGW710 Field Wireless Management Station, the 915U-2-900US forms a robust ISA100.11a mesh network capable of aggregating energy and process data from dozens of field nodes simultaneously. This data feeds directly into the Yokogawa CENTUM VP Distributed Control System (DCS), where operators can monitor real-time power consumption trends, identify load anomalies, and trigger automated control responses — all without manual intervention.

For motor-driven loads, the telemetry data from the 915U-2-900US can be routed to variable frequency drives (VFDs) such as the Yokogawa WT series power analyzers or third-party inverter platforms, enabling speed and torque adjustments based on actual process demand rather than fixed setpoints. This demand-responsive control strategy directly reduces motor energy consumption during partial-load cycles — one of the largest sources of industrial energy waste.

The module also integrates with Yokogawa EJX series differential pressure transmitters and EJA series pressure transmitters, which provide the upstream process variables needed to calculate flow-based energy consumption. When these transmitters transmit wirelessly through the 915U-2-900US, the entire measurement chain becomes cable-free, reducing installation cost and eliminating signal degradation from long cable runs.

On the safety and reliability side, the 915U-2-900US connects to the Yokogawa ProSafe-RS Safety Instrumented System (SIS), ensuring that energy-related process deviations — such as abnormal temperature spikes or pressure excursions — trigger protective shutdowns before equipment damage occurs. This integration reduces unplanned downtime and the associated energy cost of emergency restarts.

For I/O expansion and edge data aggregation, the module works alongside Yokogawa STARDOM FCN/FCJ remote process controllers, which handle local logic execution while forwarding consolidated data upstream via Modbus TCP or OPC-UA. This architecture minimizes the number of active communication cycles, reducing both network overhead and the energy consumed by always-on polling systems.

HMI integration is achieved through standard OPC-DA/UA interfaces, allowing operators at Yokogawa Exaopc OPC interface stations to visualize wireless telemetry data in real time. Energy dashboards built on this data enable shift-level energy accountability — a key driver of sustained efficiency improvement in ISO 50001-aligned facilities.

Production line energy optimization requires visibility, control, and feedback — three capabilities the Yokogawa 915U-2-900US delivers through its wireless telemetry architecture.

Visibility: By wirelessly connecting field instruments — pressure, temperature, flow, and level sensors — to the control room, the 915U-2-900US eliminates the blind spots that cause energy waste. Operators can see exactly where energy is being consumed, at what rate, and under what process conditions. This granular visibility is the foundation of any effective energy management program.

Control: Real-time telemetry data enables closed-loop energy control. When the 915U-2-900US reports that a pump is operating at 90% load during a low-demand period, the DCS or SCADA system can automatically reduce the drive setpoint — cutting energy consumption without affecting product quality or throughput. This type of demand-responsive control is impossible without reliable, low-latency wireless data.

Feedback: Over time, the historical telemetry data collected through the 915U-2-900US builds a rich dataset for predictive maintenance and energy trend analysis. Maintenance teams can identify equipment degradation patterns — such as increasing motor current draw or rising heat exchanger differential pressure — before they cause failures. Early intervention reduces both repair costs and the energy penalty of running degraded equipment.

In batch manufacturing environments, the 915U-2-900US supports production rhythm optimization by providing accurate cycle-time data for each process step. When integrated with MES or ERP systems via the CENTUM VP historian, this data enables production schedulers to align energy-intensive operations with off-peak tariff windows — reducing energy cost without changing output volume.

For facilities pursuing carbon reduction targets, the wireless telemetry infrastructure built around the 915U-2-900US provides the measurement foundation required for ISO 50001 energy management system certification and GHG Scope 2 emissions reporting. Every kilowatt-hour saved through better visibility and control is a measurable step toward sustainability goals.

All units supplied by NANKMOS are sourced from verified inventory channels, pre-shipment tested for communication integrity and signal strength, and covered by a 12-month warranty. In-stock units are available for immediate dispatch to support urgent production line commissioning or replacement requirements.

Q1: What energy saving benefits does the Yokogawa 915U-2-900US provide in a production environment? The 915U-2-900US enables real-time wireless monitoring of process variables that directly influence energy consumption — including flow, pressure, and temperature. By feeding this data into DCS or SCADA systems, operators can implement demand-responsive control strategies that reduce motor and drive energy use by eliminating unnecessary full-load operation during partial-demand periods. The elimination of wired signal infrastructure also removes the energy overhead associated with powered junction boxes and signal conditioners.

Q2: Which control systems and platforms is the 915U-2-900US compatible with? The module is natively compatible with the Yokogawa YFGW series Field Wireless Management Stations (YFGW410, YFGW510, YFGW710) and integrates with the CENTUM VP DCS and ProSafe-RS SIS platforms. It supports ISA100.11a wireless protocol and can interface with SCADA, EMS, and MES systems via OPC-UA or Modbus TCP through the appropriate gateway. Third-party integration is supported where ISA100.11a backbone infrastructure is in place.

Q3: What is the pre-shipment testing process and what does the 12-month warranty cover? Every Yokogawa 915U-2-900US unit supplied by NANKMOS undergoes pre-shipment functional testing, including wireless communication verification, signal integrity checks, and power consumption validation. The 12-month warranty covers manufacturing defects and functional failures under normal operating conditions. Units that fail during the warranty period are replaced or repaired at no additional cost, subject to standard return and inspection procedures.

Q4: Is the 915U-2-900US available from stock, and what are the lead times for replacement units? Yes, the Yokogawa 915U-2-900US is maintained in verified inventory and is available for immediate shipment. For urgent production line replacements or commissioning support, same-week dispatch is available for confirmed orders. Contact NANKMOS directly to confirm current stock levels and arrange expedited delivery for time-critical applications.