8.4 Connection of a superordinate
controller provided by the customer
Units of type SKT can be switched on and off by a
superordinate controller.
In order to realise this function, the supplied multi-
function board (accessory bag, Fig. 27) must be
inserted into the unit (see Fig. 28) and connected
by SKT plug to the adapter board (pre-assembled
to the unit trim) contact CN 404 (see Fig. 29).
Fig. 27: Accessory bag
Fig. 28: Insert multifunction board into the unit
Fig. 29: Connect to the adapter board
The multifunction board is equipped with a total of
5 terminals (see Fig. 30), with which the following
functions can be realised:
Fig. 30: Connection terminals
Connection ter5V:
Non functional
Terminals switch 1+2:
In order to utilise the potential-free contact for
externally switching the unit off, it is first necessary
to remove the jumper at the multifunction circuit
board. If this contact is opened (not bypassed), the
system enters stand-by and can no longer be
switched on by infrared remote control. If this con-
tact is closed (bypassed), the system reverts to the
most recently used operating mode.
Terminals ON/OFF1+ON/OFF2:
Potential-free contact for switching the unit off
externally. If this contact is opened (not bypassed),
the system goes into standby. However, with the
use of these two contacts switching on is not pos-
sible by infrared remote control. If this contact is
closed (bypassed), the system reverts to factory
setting 24 degrees automatic mode.
29
Содержание SKT 261
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