GU641A Controller Operation Manual
44
NOTE:
l
For ensuring the accuracy of sensor please reduce the cable resistance
between controller and sensor as much as possible, the cross section area
of cable should not be less than 2.5mm
2
.
l
When single pole sensor is used, the terminal #16 must be directly
connected to the generator
’
s earth point, but not to the control panel or other
earth point. It will impact the accuracy of sensor if the common port is
connected to the power supply negative.
l
The sensor shell and engine must be well connected and do not use
insulated material on sensor screw thread when installing single pole
sensor.
8.2.4 The installation of MPU:
NOTE:
l
The measuring accuracy of magnetic pick-up is related to fly wheel teeth:
Accuracy=
±
(120 /
fly wheel teeth) RPM
.
As the above formula, more fly wheel teeth leads to higher measuring
accuracy.
NOTE:
l
Shield cable must be used for connection between controller and sensor,
and the shield should be earthed.
l
Please play attention that the terminal #31 is connected to negative of the
power supply inside the controller.
