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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
4.247 Display of LPB power supply
•
Overview of operational status of the bus power supply via controllers
The display shows whether the controller currently powers the bus (LPB).
Display
Unit
ON / OFF
–
The status of the bus power supply via controllers will automatically be displayed on
this operating line.
Display:
ON
The bus power supply via controllers is currently active.
At the moment, the controller supplies some of the power required by the bus.
OFF The bus power supply via controllers is currently inactive.
Power supply to the bus can be accomplished in different ways. The respective setting
is made on operating line 852.
4.248 Range of action of central changeover
•
The range of action of the central changeover actions can be defined
Function for defining the range of action of central changeover.
Setting range
Unit
Factory setting
0 / 1
–
1
The range of action can be defined for the central changeover actions “Changeover of
operating mode”, “Summer / winter changeover” and “Standby”. The range of action
can be defined by making the following settings:
0 Changeover takes place with all controllers in the same segment.
1 Changeover takes place with all controllers in the entire system (all segments).
(only if the controller is in segment 0).
Benefit
Description
Setting
Effect
Bus power supply
Benefit
Description
Setting
Effect
