Datong Autosun Power Control YSD OT2106A, Installation And Use Manual

Page: 19 / 24

OT2106A Electronic Engine Governor Speed Controller
15
The engine
cannot started up,
the actuator does
not move to the
start fuel supply
position
When crankshaft
rotates, there is no
position
output
signal between
terminal 9 and
terminal 10
1
When crankshaft rotates, detect whether the
voltage between the terminal 7 and 8 has reached
the minimum 1Vrms, whether the minimum
frequency range is within the range of 30Hz to
80Hz.
If the above condition cannot be reached, closed
terminal 4 switch, masked overspeed protection function.
2
Stop the rotation of the crankshaft. Remove the
wiring on terminal 9 and 10, check whether the
actuator wire shorted or grounded. Closed
terminal 4 switch, so that the terminal 11 and 12 is
shorted. Check whether the voltage between
terminal 9 and 10 is between 18 to 22V.
3
Check whether the speed sensor position is too
far away from the gear; whether the speed sensor
wiring and shielding is correct; whether the ends
of the sensor is attached to a metal or other matter.
4
If the speed is lower than the set value during
the startup, you should turn the rated speed potentiometer
clockwise to increase the setting.
If clockwise adjustment does not produce the correct
output signal, you need to reset the rated speed
potentiometer to the maximum position counter-clockwise.
Idling potentiometer set
value is too low
Adjust the idle speed potentiometer clockwise.
shutdown switch is
turned off Check switch of terminal 3. Normally, the shutdown
switch be closed.
There is problem in
shutdown switch or
wire
Check whether the voltage between the controller
terminal 2 (+) and terminal 3 (-) is between DC 0 to 3V.
Speed sensor does not
provide signal to the
controller
Check whether the speed sensor wiring is properly
connected; whether speed sensor is open or short; whether
the shielding wire is properly connected.
Disconnect the connection between the speed sensor
and the controller, check whether the speed sensor output
resistance is between 100 to 300Ω.
terminal 11 and 12 are
open
If an external speed trimming potentiometer is not
used, you should confirm that the terminal 11 and 12 are
short-circuited.