Installation and User Guide DEVIreg™ Multi
FEC | Produced by Danfoss © 17
4.4.2 Relay status RO/RC – special setting for status ‘Heating On’
Heating On is a logical status for systems with temperature sensor. It means that real
sensor temperature is below set up level and controller should provide a special signal to
the system – either close or open relay contacts.
Heating On is a logical status that corresponds to heating system type. And some heating
systems, for example electrical, mostly need relay that closes contacts when the heating
is on. But another heating systems, for example water based, sometimes need relay that
opens contacts when the heating is on. For this purpose, DEVIreg™ Multi has possibility
to set up relay status for heating – ‘open’ or ‘close’.
Additionally, this relay status allows to implement both heating and cooling control, because
cooling is system having opposite algorithm to heating system.
The special setting for logical status Heating On is named Relay status RO/RC – Relay
Opened (RO) or Relay Closed (RC) each Channel Relay can be separately set up to status.
Factory setting – RC for relays or relays contacts which are normally opened (NO).
NB: This setting mostly works only when controller is powered!
Setting Relay status RO/RC can be done by the following menu sequence:
EN: Main Screen – Enter to Main Menu – Channels settings – Channel #X –
Relay status RO/RC – { Enter – Up/Down (RO/RC) – Enter }
EN: Main Screen – Enter to Main Menu – Channels settings – Channel #X – Relay
status RO/RC – { Enter – Up/Down (RO/RC) – Enter }
4.4.3 1S or Single Sensor mode and Sensor Type set up
4.4.3.1 1S mode
Single sensor control (1S) is mode with one temperature sensor.
And can be individually set up for any Channel.
The mode logic algorithm is the following: if sensor temperature is below set up value
then heating is turned on, and if sensor temperature is above set up value then heating is
turned off.