Outside Temperature Relay - Siemens Synco 700 Basic Documentation

Extra configuration
Settings
Example
Building Technologies
HVAC Products
Number Text
>1 wind speed sensor in
31
zone
12.4

Outside temperature relay

For each outside sensor, an outside temperature relay is available. It is irrelevant here
whether the outside temperature is directly acquired or transmitted via bus. The
RMH760B has 3 integrated outside temperature relays.
The function is to be activated via "Extra configuration":
Main menu > Commissioning > Extra configuration > Miscellaneous > Outputs > Outside
temperature relay
Assign terminal
The 2 other outside temperature relays can be configured with heating circuit 2 and
heating circuit 3 under "Outputs".
Main menu > Commissioning > Settings > ... or
Main menu > Settings > Outputs > Outside temperature relay
Main menu > Settings > Heating circuit 2 > Outside temperature relay
Main menu > Settings > Heating circuit 3 > Outside temperature relay
Operating line
Switch-off point
Switching differential
SD
ON
OFF
TO TO
ON OFF
The relay contact closes when the current outside temperature falls below the level of
Switch-off point minus switching differential. The relay contact will open again when the
current outside temperature returns to a level above the switch-off point.
Switch-off point = 5 °C
Switching differential = 3 K
The relay contact will close when the outside temperature drops below 2 °C, it will open
when the outside temperature exceeds 5 °C.
Modular Heating Controller RMH760B
12 Function block miscellaneous
Effect
More than one wind speed sensor in the
same wind zone
Urgent message; must be acknowledged
Range
–50...50 °C
1...20 K
Deactivation
OFF
Activation
ON
Switching differential
SD
TO
Current outside temperature
TO
Factory setting
5 °C
3 K
191/238
CE1P3133en
05.02.2007