Dantherm CDF 40 Service Manual page 16

Alarm
Run/ fail
connection
(Optional)
16
There is an option for connecting an external alarm, which makes it possible to see, when the
dehumidifier is operating normally or has an error. In order to use this option you must create
your own external electrical circuit and connect it to the run/fail terminal on the main PCB
(see page 26).
This illustration is an example of how the run/fail circuit could be used.
Operational Mode
NORMAL MODE
RUN FAIL
FAIL
RUN
1 2 3
VDC
(Max. 50V, 500mA)
GND
4
VDC
VDC
(Max. 50V, 500mA)
GND
Fig. 6
Installation: Electrical connection
Error Mode
ERROR MODE
RUN FAIL
RUN FAIL
1 2 3 4
(Max. 50V, 500mA)
GND
VDC
(Max. 50V, 500mA)
GND