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Siemens
RDU341 Basic Documentation
CE1P3172en
Building Technologies
2015-06-08
3.2.2 Communication
examples
The following examples show two typical applications of a central time schedule in
conjunction with local control of the room operating mode.
The room operating mode in rooms 1…2 of a building is determined by the time
schedule
.
Window contacts are fitted in all rooms.
The following conditions are specified:
The rooms are used and controlled by the time schedule as follows:
– Night setback from 17:00 to 08:00 (Economy)
– Protection from 20:00 to 06:00
– Lunch break from 12:00 to 13:00 (Precomfort)
The substitution (parameter P88) for Precomfort via bus is set on the thermostats
as follows:
– Room 1: Comfort (1)
– Room 2: Economy (0)
Operating mode switchover
In
room 1,
the window is opened briefly, once in the morning, once in late
afternoon and once at night (1). Only the opening in the morning has a direct
impact on the effective room operating mode.
During lunch break, the time schedule changes to Precomfort. The mode remains
in Comfort as set by parameter “Transformation Precomfort” (P88 = 1).
Ti
me schedule
Window contact
Room 1
Effective room
operating mode
Room 1
Comfort
Precomfort
Economy
Protection
Window open
Window closed
Comfort
Economy
Protection
08:00
17:00
13:00
12:00
1)
06:00
20:00
1)
1)
2)
3
1
7
1
Z
9
1
Example 1