{"product_id":"woodward-9905-860-peak150-digital-control","title":"Woodward 9905-860 PEAK150 Digital Control","description":"\u003cp\u003eThe \u003cstrong\u003eWoodward 9905-860\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e9905-860\u003c\/strong\u003e Digital Control Unit, operates as a dedicated hardware component for turbine and engine regulation within PEAK150 control platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e9905-860\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWoodward\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e243 x 176 x 86 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e18 to 32 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIngress Protection\u003c\/td\u003e\n\u003ctd\u003eNEMA 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eActuator Loop Feedback Response\u003c\/h3\u003e\n\u003cp\u003eThe 9905-860 provides closed-loop control by processing 4-20 mA input signals to modulate prime mover fuel actuators. The control logic is optimized for rapid response in turbine applications, maintaining stable speed or load setpoints despite external perturbations. The unit supports Modbus communication, allowing for integration into higher-level supervisory networks for parameter monitoring and setpoint adjustments. Proper tuning of the proportional-integral-derivative (PID) parameters is required to achieve the necessary actuator loop feedback response, ensuring the system maintains steady-state operation while minimizing overshoot during transient load changes.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the NEMA 4 enclosure rating allow for outdoor installation?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the NEMA 4 rating indicates the unit is constructed to provide protection against ingress of solid foreign objects (falling dirt and windblown dust) and ingress of water (rain, sleet, snow, splashing water, and hose-directed water).\u003c\/p\u003e\n\u003cp\u003eQ: Is the Modbus communication protocol supported for configuration?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the 9905-860 supports Modbus protocol, enabling data exchange with external controllers for operational status, fault logging, and remote setpoint adjustment.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Ensure the 243 x 176 x 86 mm housing is mounted on a flat, rigid surface. The NEMA 4 rating is contingent upon the use of appropriate conduit fittings and gasket seals during installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Connections:\u003c\/strong\u003e Supply 18-32 VDC power to the designated terminals. Verify that the power source is isolated from high-voltage transients to protect the digital logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Cabling:\u003c\/strong\u003e Use shielded, twisted-pair cables for the 4-20 mA input signals. Ground the cable shield at the control end only to prevent ground loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Management:\u003c\/strong\u003e While rated for -40 to 70 deg C, avoid mounting the control in direct sunlight or in proximity to high-heat exhaust components to ensure longevity of the internal display and microprocessor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValidation:\u003c\/strong\u003e Perform a functional test of the 4-20 mA input loop and verify Modbus connectivity before applying fuel to the prime mover.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":53002164306229,"sku":"9905-860","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/9905-860.png?v=1781508425","url":"https:\/\/www.5gplc.com\/products\/woodward-9905-860-peak150-digital-control","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}