Woodward 505HT, Installation And Operation Manual

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Manual 35116 505HT for Pelton Turbines
Woodward 42
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Not Used: choose this option if this analog input won’t be used on this application
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Manual Nozzle Control Enable: When this discrete input is closed, all nozzles can be controlled
“manually” at the same time with the Raise and Lower discrete inputs.
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Pond / Tail Level Control Enable: When this discrete input is closed, the control will switch into
pond/tail level control. The Raise and Lower discrete inputs will raise and lower the pond level set
point.
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Nozzle Limit Raise: When this discrete input is closed, the Nozzle Limit ramps up at a configurable
rate. If the remote nozzle limit is selected this input will not be effect on the control.
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Nozzle Limit Lower: When this discrete input is closed, the Nozzle Limit ramps down at a
configurable rate. If the remote nozzle limit is selected this input will not be effect on the control.
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Creep Input #1 & Creep Input #2: Creep detection requires two inputs from proximity probes (or
from ZVPU interface modules). By monitoring the Creep #1 and Creep #2 discrete inputs, the control
can detect when the unit is creeping.
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Reset: All shutdowns and alarms are latched until the fault condition clears and the control is reset.
When this input is closed, it resets the control.
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External Start Permissive: If this function is configured for any discrete input, the control will
monitors it and a start command will only be accepted if this input is closed. If there is no discrete
input configured for this function, the start command will be accepted at all time (sure, if no shutdown
is present). After the turbine is running this input has no effect in the control.
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Speed Bias Raise & Speed Bias Lower: When one of these discrete inputs is closed, the Speed
Bias internal ramp ramps up or down at a configurable rate. For using these discrete inputs the speed
bias type must be configured to “Discrete Input”.
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Baseload Enable: This input is used to enable the Baseload control mode. In Baseload the
generator load will stay in a set point determined either by the Raise Speed/Load inputs, or by a
remote Baseload input or by a Baseload Modbus reference. The following conditions must also be
present in order to the baseload control be enabled: the generator breaker must be closed, there
must be a valid electrical transducer signal and the manual and level control modes must be disabled.
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Unload: When the unload contact is closed (rising edge triggered) it starts to slowly decrease the
load reference and either when it reaches a minimum value (unload trip level) or a certain maximum
delay after the reference reaches the unload trip level (configurable) it gives an open breaker
command (if configured). After that the turbine stays in its rated speed waiting for another command.
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Local/Remote: This input defines if the controller will accept commands coming from discrete inputs
(local mode) or via Modbus (remote mode). If there is no input configured for this function the
controller accepts both commands indistinctly. The commands from Display are always accepted.
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Load droop Enable: this input is used to enable the load droop, when the control is in droop mode.
In this mode the droop feedback is given by the generator active power.
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Remote Fault #1 to #6: these inputs are used for alarm or trip (they can be configured for any of
these functions). It’s possible to also define a delay (configurable parameter) for each one of these
alarms/trips.
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Manual Nozzle #1 to #6 Enable: This input is used to enable individuals nozzles to work in manual
mode. This mode can be enabled at any time, if there is no turbine shutdown.
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Nozzle #1 to #6 Manual Raise and Nozzle #1 to #6 Manual Lower: When one of these discrete
inputs is closed, the internal limit ramp for that specific nozzle ramps up or down at a configurable
rate. The nozzle needs to be in manual mode to accept this discrete input.
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Manual Deflector Enable: This input enables the manual deflector control. The manual deflector can
only be enabled if there is no shutdown.
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Deflector manual Open: When the 505HT is in Manual Deflector Control, this input will work opening
the deflector when the discrete input is closed.
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Deflector Closed: If deflector is used this input is needed to inform to control the status of the
deflector. Discrete input closed means that the deflector is closed.
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Deflector Opened: if 505HT is configured to use two sensors to deflector Status this input is needed
to inform the status of the deflector. Discrete input closed means that the deflector is opened.
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Enable Remote Speed: This input enables the remote speed control. In this control mode an analog
input needs to be configured for Remote Speed. This control will work when the control is in droop
mode.
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Enable Remote Baseload: This input enables the remote baseload control. In this control mode an
analog input needs to be configured for Remote baseload. This control will work when the control is in
baseload mode.
Released