YSI DIQ/S 182 XT-4 System 182 XT-4 - Manual (Page 59)

System 182 XT-4 Installation
3 - 45 ba76026e01 01/2012
3.11.2 Usage of the auxiliary voltage
The DIQ/S 182 XT-4 has a 24 V output (designation,
HILFSSPANNUNG or AUXILIARY VOLTAGE on the terminal strip).
You can use this auxiliary voltage for the relay-controlled opening of the
valve in a DIQ/CHV valve module for the compressed air-driven sensor
cleaning function. To do so, you have to connect the auxiliary voltage
output, a free relay contact and the valve connection in the DIQ/CHV in
series. Bridge a terminal of the auxiliary voltage output with a terminal
of a relay output and run a control line from the remaining terminals to
the valve module.
Caution
The auxiliary voltage must not be used for other purposes.
Connection scheme for one sensor with compressed air cleaning
Caution
Run the bridge below the divider so the bridge does not bump
against the circuit board in the lid when the enclosure is closed.
17 Close the enclosure of the DIQ/S 182 XT-4.
X13 X15
X6
X12 X14
X5
X11
X4
X10
X3
X9
X2
X8
X1
Terminal strip
DIQ/S 182
Terminal strip
DIQ/CHV
R1 AUXILIARY
VOLTAGE
VALVE DISTRUBUTION
R2 R3
Valve
control line