OT2106A Electronic Engine Governor Speed Controller
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effective angle range.
(6) rising speed time adjustment:
Appropriately adjust the rising time potentiometer so the overshoot from idling state to rated state
will be minimal. If you start for the first time, you can turn it clockwise to the maximum position,
then return to the proper position. When the speed changes from idle to rated, the acceleration
time can be adjusted between 5-35 seconds. Adjusting potentiometer clockwise, acceleration time
become longer; otherwise, time is shorter.
(7) Start-up fuel quantity adjustment:
When the engine runs at rated speed with empty load, record the terminal pin 9 (+) and 10 (-)
voltage, and then shut down the engine, close the switch on the terminal 4, mask overspeed
protection function, adjust start oil potentiometer , measure the terminal pin 9 (+) and 10 (-)
voltage until the voltage is 30% higher than the rated no-load voltage (record value).
Restart the engine and observe the start time, speed overshoot and smoke intensity. If the
requirements are satisfied, the start-up fuel quantity potentiometer settings would be appropriate;
otherwise, it should be appropriately reduced. If the engine can not start up, then slowly turn
clockwise start-up fuel quantity potentiometer until the engine starts up.
In order to optimize engine starting characteristic, the start-up fuel quantity potentiometer can be
appropriately adjusted. When the speed controller is in the speed control state, the start-up fuel
quantity control will lose its function.
Note: For the engine which does not need start-up fuel quantity control, the potentiometer should
be turned clockwise to the maximum position to turn off this feature (be careful not to
over-rotation potentiometer).
4.3 Speed droop adjustment
Transfer rate is usually expressed as a percentage, it can be calculated by the following formula:
100
%
emptyspeed
eed
fullloadsp
emptyspeed
speeddroop
Speed droop adjustment depends on the applications: stand-alone, parallel with another or more, and
parallel with the network.
In most stand-alone applications, speed droop is not important. If the engine needs to run in the speed
droop mode, but the value of droop is not important, then, you should turn the speed droop potentiometer in
the middle position, then use the speed trim potentiometer to adjust the load.
When two or more generators parallel (make up a large generating units), and a local area power
generating unit network is built, the frequency of the local area generating network will change with the size of
the load. In this case, all the generators should have a same speed droop value.
