Dantherm CDF 40, Service Manual

Page: 16 / 32

16
Installation: Electrical connection
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.
RUN FAIL
1 2 3 4
VDC
(Max. 50V, 500mA)
GND GND
VDC
(Max. 50V, 500mA)
RUN FAIL
1 2 3 4
VDC
(Max. 50V, 500mA)
GND GND
VDC
(Max. 50V, 500mA)
NORMAL MODE ERROR MODE
Operational Mode
RUN FAIL
Error Mode
RUN FAIL
Fig. 6
Alarm
Run/ fail
connection
(Optional)