Installation instructions
1.2.2 Sensor connections and digital inputs
All sensors are connected in the upper connection part as shown below. The next chapters will describe the
connection for each sensor.
1.2.3 Wind speed sensors
There can be 2 wind speed sensors connected. These can be the current type or the frequency type sensor.
If the heated sensors maximum current consumption is 100 mA, the sensor can be connected directly. An
external power supply must be used, if the heated sensors current consumption is higher than 100 mA.
Current sensor with heating less than 100 mA:
The sensor can be directly connected to the VBC. Use terminals 108, 110 and 112 for
sensor 1 and 109, 111 and 113 for sensor 2.
For sensor 1 jumper 1 (see picture) must be placed to the left.
For sensor 2 jumper 2 (see picture) must be placed to the left.
Current sensor with heating more than 100 mA:
The sensor cannot be directly powered by the VBC. Therefore an external power
supply unit must be placed. Only the signal and ground must be connected to the VBC
(110 and 112 for sensor 1 and 111 and 113 for sensor 2).
For sensor 1 jumper 1 (see picture) must be placed to the left.
For sensor 2 jumper 2 (see picture) must be placed to the left.
Frequency type sensor with our without heating:
Both with and without heating can be directly connected (provided that the heating
consumes no more then 100 mA). Use terminals 108, 110 and 112 for sensor 1 and
109, 111 and 113 for sensor 2. If an external power supply must be used, do not con-
nect terminal 108 and/or 109.
For sensor 1 jumper 1 (see picture) must be placed to the right.
For sensor 2 jumper 2 (see picture) must be placed to the right.
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