feature | controlling flow for local control, an Ethernet wire is all that is needed to ensure communication throughout the facility. Information from Festo points to four valve assemblies and the combinations of inputs and outputs that can be used for pneumatically actuated control (Fig. 3 on p. 26): Configuration 1 uses a Namur valve connected to the compressed-air line, which will direct the air to either the "open" port or "close" port of the actuator. This setup requires an electrical signal to be wired to the Namur valve, a sensor box, and a pneumatic connection to the compressed-air line. The sensor box detects which position the valve is in and sends the feedback to the controller. The inventory for Configuration 1 includes two electrical wires and one pneumatic line. This configuration is best suited for a local control panel, especially if multiple valves will have a similar configuration. This one input and one output setup does not require a valve terminal to be installed in the control cabinet. Configuration 2 uses a valve terminal in a cabinet and two pneumatic lines Fig. 2. With many automated-valve configurations, a short run of wires to the control cabinet (as shown in this schematic) can save costly installation and difficult, time-consuming troubleshooting if an open circuit becomes an issue. HD ENV - A NEW ERA IN VIBRATION MONITORING ® Providing earlier pre-warning than any other vibration monitoring technology * maximized planning horizon * extended component lifetime * reduced repair costs * minimized unplanned downtime Get started right away - use your existing transducer installation. spminstrument.us 1-800-505-5636 NOVEMBER 2017 Bonita Springs, Dec 11-15 Booth #127 EFFICIENTPLANTMAG.COM | 25http://www.spminstrument.us http://www.EFFICIENTPLANTMAG.COM