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Woodward 9906-717
Product Identification: Digital Valve Positioner (DVP) — Woodward’s state-of-the-art electric actuation driver.
Product Overview: The 9906-717 is a Digital Valve Positioner (DVP) — a rugged, compact driver for electric actuation. The DVP provides positioning based on a demand signal from the control system and is designed for use with various Woodward valves and actuators. It supports redundant installations and is the core driver component in multi-DVP cabinet assemblies (such as the 5-DVP cabinet used for LM6000PF applications).
Detailed content
Working Principle: The DVP is designed to control valves and actuators with either Limited Angle Torque (LAT) or Brushless DC (BLDC) motor types. The driver positions based on resolver feedback located on the valve or actuator. Woodward’s integrated “ID module” technology enables plug-and-play operation: upon connection to a valve or actuator equipped with an ID module, the DVP automatically reads critical valve-specific information to configure the driver.
Technical Specifications:
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Enclosure Ratings: IP30 or IP66 models available
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Power Input: 125 Vdc or 24 Vdc options
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Output Options: Connector or terminal block; conduit option on IP66 models
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Input Signal Options: EGD (Ethernet), CANopen, Analog (4–20 mA or 0–5 Vdc), PWM — all configurable
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Communications: Triple redundant EGD (Ethernet) or dual redundant CANopen digital communication
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Hazardous Location Certification: CE Mark/ATEX, IECEx, CSA — Class I, Div. 2 Groups A, B, C, D T4 (some models T3); IECEx Zone 2, Ex nA IIC T4 Gc; EAC (Russia) 2Ex nA IIC T4 Gc
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Marine Certification: LR Lloyd’s Type Approval, DNV-GL Type Approval (24 V DVP, IP66, 2-board)
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Rack Dimensions (5-DVP cabinet): 19 in (482.61 mm) rack width, 18.312 in (465.1248 mm) height
Structural Features:
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Rugged, compact design
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Resolver-based position feedback
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ID module compatibility for automatic valve recognition
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2-board stack electronic configuration
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Per-unit 20 A (dc) circuit breaker protection (in cabinet applications)
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Separate 125 V dc bus power per DVP in multi-unit cabinets
Application Scenarios: Reciprocating engines, turbines, electric actuation of Woodward valves and actuators, redundant turbine control installations, LM6000PF gas turbine DVP cabinets.
Installation Requirements:
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Mount per Woodward DVP manual (Manual 26844 for DVP specifications and installation; Manual 26329 for DVP operation)
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For cabinet installations: vertical mounting inside IP66 metal cabinet; input-output cables recommended to enter/exit through bottom via Roxtec Blocks
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Provide 125 Vdc (per DVP) or 24 Vdc power as applicable
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Wire demand signal inputs per configuration (EGD, CANopen, Analog, or PWM)
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For cabinet applications: 24 Vdc power feeds through a thermostat to operate a DC fan or heating element
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Refer to Woodward Control Wiring Diagram 9971-1917 and Layout Drawing 9934-1544 for cabinet wiring
Usage Precautions:
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Do not open door while energized unless area is known to be non-hazardous (marked on DVP label)
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Prime mover must be equipped with an independent overspeed shutdown device
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Read entire manual and all related publications before installation, operation, or servicing
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Unauthorized modifications outside specified limits void warranty and may cause personal injury or property damage
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Observe ESD precautions when handling electronic modules
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Verify latest revision of all publications via Woodward’s publication system (manual 26311)
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In hazardous locations, ensure all wiring is fully enclosed in conduit; substitution of components may impair suitability for Class I, Division 2
