Brand: WoodWard
Model number:8271-929
Colour:new
Warranty: 12 months
Lead Time:3-day working day
Country of origin: USA Price: Please contact us
Product weight:0.85kg
Shipping Port: China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
8271-929 WOODWARD
Before handling the control, read page ii, "Electrostatic Discharge Awareness". Be careful when unpacking the electronic control. Check the control for signs of
damage such as bent or dented panels, scratches, and loose or broken parts. Notify the shipper of any damage.
Droop operation is required when the generator is paralleled with an infinite bus
without a Generator Loading Control, Process Control, Automatic Power Transfer
and Load Control, Import/Export Control, or other load controlling accessory, or
when paralleled with incompatible governors. (All Woodward electric load-sharing
systems are compatible.) When running a single unit on an infinite bus with a
Generator Loading Control or Import/Export Control, terminal 14 must be
connected to terminal 16 (terminal 0 on high-voltage controls) to connect the
Load Matching Circuit to the load-sharing lines. The load-sharing lines must be
wired to the Generator Loading Control or Import/Export Control. The circuitbreaker auxiliary contact will then be connected to the Generator Loading Control
or Import/Export Control and not to the 2301A Load Sharing and Speed Control.
Power Supply
Run the power leads directly from the power source to the control, connecting the
negative lead to terminal 15, and the positive lead to terminal 16. If the power
source is a battery, be sure the system includes an alternator or other batterycharging device.
DO NOT apply power to the control at this time. Applying power
before a control is completely connected may damage the control.
Minimum Fuel Contact
The minimum-fuel contact is intended as an optional means for a normal
shutdown of the prime mover. It is connected in series with terminal 16 (terminal
0 on high-voltage controls) and terminal 17 as shown in the plant wiring diagram
(Figure 1-2). Do NOT remove this jumper from terminal 17 unless a minimum fuel
contact is installed; the control will not operate without 18 to 40 Vdc applied to
terminal 17.
When the contact is closed, the voltage applied to terminal 17 allows the control
to move the actuator to any position required for operating conditions.
Do NOT use the minimum-fuel contact as part of any emergency stop
sequence.
Failed Speed Signal Override
A contact to override the failed-speed-signal circuit can be installed in series with
terminal 18 and the dc power to the control. When the contact is open, the
control operates normally, turning the control output off in the event of a loss of
speed signal. Closing the contact overrides the failed-speed-signal circuit as may
be required for start-up.
Prior to start-up of the prime mover, the speed signal is nonexistent. On prime
movers with cranking motors, the cranking speed is usually sufficient to provide a
speed signal, so an override contact on terminal 18 is not needed for starting. On
some steam turbine systems, the Close to Override Failed Speed Signal contact
must be closed in order to allow the actuator to open and provide steam for starting.
If a failed-speed-signal-override contact is used, it should be of the momentary type
to ensure that the failed-speed-sensor shutdown circuit is enabled after start-up
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1
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