Daewoo ST Series Betriebsanleitung PDF herunterladen (Seite 136)

8. Accessory input

The Auxiliary Terminal N accepts input signals from load sharing units, auto synchronizers, and

other governor system accessories, accessories are directly connected to this terminal It is

recommended that this connection from accessories be shielded as it is a sensitive input terminal.

If the auto synchronizer is used alone, not in conjunction with a load sharing module, a 3M ohm

resistor should be connected between Terminals N and P This is required to match the voltage

levels between the speed control unit and the synchronizer.

When an accessory is connected to Terminal N, the speed will decrease and the speed

adjustment must be reset.

When operating in the upper end of the control unit frequency range, a jumper wire or frequency

trim control may be required between Terminals G and J. This increases the frequency range of

the speed control to over 7000 Hz.

9. Accessory Supply

The +10 volt regulated supply, Terminal P, can be utilized to provide power to governor system

accessories. Up to 20mA of current can be drawn from this supply. Ground reference is Terminal

G. A short circuit on this terminal can damage the speed control unit.

10. Wide Range Remote Variable Speed Operation

A single remote speed adjustment potentiometer can be used to adjust the engine speed

continuously over a specific speed range. Select the desired speed range and the corresponding

potentiometer value. (Refer to “Speed Range Potentiometer Value”) If the exact range cannot be

found, select the next higher range potentiometer. An additional fixed resistor may be placed

across the potentiometer to obtain the exact desired range. Connect the speed range

potentiometer as shown in the next diagram.

* Select Proper Potentiometer Value

Caution :

To maintain engine stability at the

minimum speed setting, a small amount

of droop can be added using the

DROOP adjustment. At the maximum speed setting the governor performance will be near

isochronous, regardless of the droop adjustment setting.

Contact the factory for assistance if difficulty is experienced in obtaining the desired variable

speed governing performance.

- 133 -

Speed Range Potentiometer Value

900 Hz. 1K

2,400 Hz. 5K

3,000 Hz. 10K

3,500 Hz. 25K

3,700 Hz. 50K

GJ KL

EA6M4005

1 2 ... 131 132 133 134 135 136 137 138 139 140 141 ... 182 183

Keine Kommentare

Daewoo ST Series Betriebsanleitung Seite 136