INSTALLATION
MANUAL
© Scania CV AB 2017, Sweden
Configuring the main display and connecting equipment, examples
03:04 Issue 2.0 en-GB 41
Examples of connection of sensors and micro
switches
The following sections contain examples of how the connections of the display can
be used and configured. The connections in the examples are specific, but the prin-
ciple is the same no matter what connection you choose to use.
Checking the signal strength in the main display troubleshooting
section
You can check the signals and signal strength of connected sensors and micro switch-
es in the troubleshooting section of the main display. Go to Menu > Help > Trouble-
shooting > Troubleshooting DCU.
Button Description
Switch Configured micro switches are listed here. The status of the micro
switch is displayed in the Data column. If the status changes when
the micro switch is activated, the connection is working properly.
4-20 mA The signal strength of the configured 4-20 mA inputs is displayed
here. The Data column displays the current indicated by the sensor.
If the current drops below 2 mA, a broken wire alarm is displayed.
If the signal strength exceeds 22 mA, a short circuit warning is
shown on the display.
Note: The power supply to the sensor must match the specifications
of the sensor. An incorrect power supply results in an incorrect sig-
nal strength. If the signal strength exceeds 30 mA, the main display
will suffer damage.
To ensure that the sensor does not damage the equipment, the max-
imum output signal of the sensor must be tested. Proceed as follows:
1.Set the sensor to maximum.
2.Check the signal strength of the sensor in the Data column. See il-
lustration.
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