wtw DIQ/S 282, Operating Manual, Page: 46 / 186

Installation DIQ/S 28X
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3.10.2 Usage of the auxiliary voltage
The universal transmitter DIQ/S 28X has a 24 V output (designation HILFSS-
PANNUNG 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.
NOTE
The auxiliary voltage must not be used for other purposes.
Connection
scheme for one
sensor with
compressed air
cleaning
NOTE
Run the bridge below the divider so the bridge does not bump against the circuit
board in the lid when the enclosure is closed.
WARNING
No free wires are allowed to project into the housing. Oth-
erwise, there is a danger that areas safe to contact could
come into contact with dangerous voltages. This could re-
sult in life threatening electric shock when working with
the universal transmitter DIQ/S 28X. Always cut off any
wires that are not in use as closely as possible to the cable
gland.
7 Close the enclosure of the DIQ/S 28X.
X6 X5 X4 X3 X2 X1
Klemmleiste
DIQ/S 28X
Klemmleiste
DIQ/CHV
VENTIL
VALVE
VERTEILER
DISTRUBUTION
Ventil-
Steuerleitung
X15 X17 X14 X16 X13 X12 X11 X10
R1
HILFS-
SPANNUNG
AUXILIARY
VOLTAGE
R2 R3