Wind Turbine Pitch Valve0 pages

Wind Turbine
Pitch Valve
Offering safe pitch control in
harsh environments

The Moog Wind Turbine Pitch Valve has been specifically designed to meet the
demanding requirements for wind turbines while maintaining the high performance
and advanced options of our proven technology. Based on the industry-leading
technology of the Moog Direct Drive Valve D636, this product delivers superior axis
control, remote monitoring capabilities and advanced communication options.

Features and Benefits
99 tClosed-loop pitch control by the
valve saves PLC operation and
communication load

The integrated digital electronics offer higher flexibility by enabling the user to
configure the characteristics to meet the unique requirements of the wind turbine
installation. Customer specific firmware parameters can be saved and used for
configuration of new valves for easy commissioning and replacement as plug and
play. Fieldbus communication offers the option of condition visualization and
adjustment via programmable logic controller (PLC) and remote systems, allowing
for remote monitoring and diagnostics.

99 tFlexibility in firmware to meet
the unique requirements of your
installation

The control architecture of this valve makes it ideal for the pitch control application.
The valve receives the blade pitch position command directly from the PLC. Pitch
sensor feedback can be delivered in three ways: via fieldbus, analog interface or
digital interface. The control loop is closed by the valve keeping the pitch of the
individual blade to the value set by the PLC. When loosing PLC control or when a
failure occurs in one of the blade pitch systems the inter-valve communication
returns the blade pitch to a safe position in a controlled way. Other failsafe options
can be implemented with redundant communication to PLC via fieldbus and analog
signals.

99 tLong life design reduces
maintenance costs

In addition to superior design and performance, Moog‘s valves are manufactured and
tested to ensure they meet world-class standards for performance, long service life
and easy maintenance. Moog Global Support™ gives you the confidence that your
valve can be repaired or replaced easily anywhere in the world and offers you access
to expertise and a range of value-added services.

your partner IN pitch control

99 tMultiple failsafe options
99 tPowerful monitoring capabilities
via fieldbus

99 tEasy plug and play commissioning
and replacement
99 tRobust design proven in harsh
environments

Applications
99 Offshore and onshore wind turbines