6.5 Power supply (230VAC) control
PR821-CH offers functionalities which enable 230VAC power supply activation and deactivation in
hotel room. The power supply is not switched directly by the controller and it is necessary to use
external relay for that purpose. The output connected to the relay e.g. IO1 must be assigned with
the function
[48]:POWER SUPPLY
. The example of 230VAC power supply control is shown in
fig. 10.
Caution!: In case of installation with 230VAC voltage, adequate safety measures must be applied
and all works can be executed only by qualified and certified personnel.
Fig. 10 Power supply (230VAC) controlled by PR821-CH controller
In the standard scenario it is assumed that 230VAC power supply shall be activated by authorized
user card i.e. by means of CARD IN HOLDER flag which activates POWER SUPPLY flag and
successively the output with the function
[48]
. In such case 230VAC supply is available in room as
long as card is in the holder plus time configured with POWER SUPPLY – SWITCH OFF DELAY timer
in controller properties in
Timers
tab. By default, hotel staff user i.e. NORMAL user with
Hotel
staff
attribute as well as guest user can activate CARD IN HOLDER flag in room with their cards.
However it is also possible that any user card or any EM125kHz or Mifare card could activate the
flag and successively switch 230VAC power supply on. This can be configured with the option
CARD IN HOLDER flag switched by
in controller properties in
Hotel options
tab.
Additionally it is also possible to switch the supply remotely from PR Master software using POWER
SUPPLY flag but such method has lower priority than switching with card.
6.6 Air conditioning control
PR821-CH offers functionalities which enable air conditioning control in hotel room. For that
purpose one of controller outputs with the function
[41]:AIR CONDITION
can be used. AIR
CONDITION flag and associated output
[41]
can be activated in several ways according to table 5.
In standard scenario of operation it is assumed that air conditioning shall be activated with
authorized user card i.e. by means of CARD IN HOLDER flag which activates AIR CONDITION flag
and successively the output with the function
[41]
. By default, hotel staff user i.e. NORMAL user
with
Hotel staff
attribute as well as guest user can activate CARD IN HOLDER flag in room with