3
3. Cable between Sensor and Indicator
1) Cable of 7 wires of at least 0.75 mm
2
is usable for maximum 2 km in length for one-indicator, 1 km
for two-indicators.
2) If induction by radio waves occurs, use shielded cable and earth end of the shield (E3).
3) Set the units and the cable away from powerful transmitting antennas as well as high-voltage and
large-current circuits.
4) Cable may be affected by lightning as the distance is extended, so cable should ideally be placed
underground. Units have a small-capacity lightning arrester, but in areas subjected to frequent
lightning, may require a separate lightning arrester on the input line.
4. Wiring the Sensor Unit
1) Connect cable according to the wiring drawing.
2) Open the lid of the terminal box at the lower part of the sensor unit.
3) Lead a line through the ground (cable penetration piece) into the terminal box.
4) After connection, secure the clamp screw by turning it clockwise. This tightened screw clamps the
cable by compression of the rubber packing to seal the space against rain water. If a thin cable leaves
spaces, pack the spaces with putty or similar material to keep out water.
5. Installing the Indicator
Select an installation location for this unit that satisfies the following conditions.
1) A place
with less vibration, corrosive gas, dust, salt, and etc.
2) A place not exposed to direct sunlight or high temperature (desirable at -10 to +50
℃
)
3) A place with the humidity of 40 to 85%RH. No condensation.
4) A place not affected by magnetic fields
6. Wiring the Indicator
Wire cable to the terminals on the inside of this unit, referring to the wiring drawing attached at the
end of this manual.
7. Starting Operation
1) Check that the cable is connected correctly.
2) Turn on the power switch and wind speed switch.