Contronics HU-15OG - Electrical Connections

9
HU-15OG
7. ELECTRICAL CONNECTIONS
Supply voltage (230V AC ± 10%)
Ensure there is an earthed wall socket next to the humidier. If necessary, connect it
in parallel to any external ventilators. This will ensure that the ventilators and the
humidier switch on and off simultaneously.
Sensor connection
Mount the sensor in a suitable place (for measuring) and connect the DIN plug to the
humidier.
External control voltage
The HU can be controlled via an external control voltage (0-10 Volt). Use the HK-01
cable for this purpose. The DIN plug is connected to the humidier, which can then be
controlled using a direct current of 0 Volt (min.) up to 10 Volt (max.).
It is also possible to set up an On/Off control. To do this, use the HK-15 cable. Short
circuiting the two wires will cause the humidifier to immediately operate at the capacity
set by the rotary button. The humidifier will be in stand-by mode when the contact is
opened, and will not humidify.
IMPORTANT
If an external controller has been connected to the DIN plug, the dial on the
humidier must be set to 0. This will prevent the humidier from humidifying
if a fault occurs in the controller.
IMPORTANT
The external control signal must be oating with respect to earth (there must
never be a connection to “earth”). The output impedance of the external
control signal must be < 470Ω.