ABB i-bus KNX Product Manual page 30

5.2.2 O ld operating modes
3 6 B
If Old... has been selected on the operating mode parameter page for the Setting the
operating mode parameter, the current operating mode can be set as follows:
Night
Object 3
any
any
Standby
Night
Typical application:
and the Night operating mode in the evening via a time switch.
During holiday periods, another channel on the frost/heat protection time switch is
also selected via o bject 5
H U
O bject 4 (Comfort) is connected to a presence watchdog. If presence is detected,
H U U H
RTF/A 1.1 switches to the Comfort operating mode (see table).
Object 5 is connected to a window contact: When a window is opened, RTF/A 1.1
changes to the frost protection operating mode.
Night object
Standby
0
1
Night
Comfort
Frost
protection
The old process has two disadvantages in comparison to the new process:
1. To access the night operating mode from the comfort operating mode, 2
telegrams are required (2 channels of a time switch where applicable):
Object 4 must be set to "0" and object 3 to "1".
2. If the window is opened and closed again at times when the frost/heat
protection time switch is selected, the frost/heat protection operating mode is
cancelled.
Comfort
Object 4
any
1
0
0
O bject 3 activates the standby operating mode in the morning
H U U H
.
U H
Comfort object
0
1
Frost/heat
protection object 5
1
0
0
0
Frost object
0
Current operating mode
1
current operating
mode
Object 6
Frost/heat
protection
Comfort
Standby
Night
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