TREND WS_R - Manual

1 WS/R Rain Detector Installation Instructions TG102665 Issue 2/D 13/03/07
Important: Retain these instructions
Installation Instructions
WS/R
Rain Detector
INSTALLATION
Mount the sensor in position. The location should provide safe access for maintenance and a suitable operating environment.
(1) Mount the sensor on a permanent structure using
2 off 20 mm (0.79”) spacer bar saddles, available
from RS Components (608-121) as shown below.
Note that the sensing area should be mounted at
an angle of 30° to 40° to enable surface moisture
to run off.
Do not cover, allow air circulation.
Do not operate outside the ambient temperature range
(-25 °C to +55 °C) (-13 °F to +131 °F).
Do not store outside the ambient temperature range
(-25 °C to +55 °C) (-13 °F to +131 °F).
Connect the sensor’s output to the IQ controller.
(2) Wire the sensor output (yellow) to an analogue
voltage input of the required IQ controller as
shown.
Connect the sensor’s power supply.
(3) Connect the sensor to the IQ controller’s 24 V
auxiliary supply using the red and blue leads as
shown.
Sensor at 30° to 40° angle
Spacer bar saddles
Y
Gn
X
R
Blue
supply
signal
IQ1xx, IQ2xx
IN
0V
+24Vdc
0V
WS/R
Signal and supply 0 V linked internally
no connection
For details about particular IQ Controller auxiliary supplies see the appropriate controller data sheet.
Note that the nominal sensor supply is 9 to 12 Vdc, but the sensor is fully functional with a 24 Vdc supply.
Input
Channel
linked for
Voltage
(V)
Y
Gn
X
R
Blue
supply
signal
IQ3
N (in)
0 (0V)
+ (24V)
WS/R
Signal and supply 0 V linked internally
no connection