8271-715 WOODWARD

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