7.9
External demand for fan speed 2
The fan speed 2 can be demanded via the binary inputs BE4 or BE7.
The following applies:
(1) Fan speed 2 can only be switched on if the system is
already in operation
(2) BE4/BE7 = ON starts the system operation with fan
speed 2
Functions
WE
Configuration
2-speed fans over BA2/BA3
OFF
0 sec
Fb11 = ON
BA2 = BA3 = ON (–> page 63)
BA2 = AUS, BA3 = ON (–> page 63)
Delay time / 0 to 60 sec
External demand for fan speed 2
OFF
Fb19 = ON
BE4 (1), (2): Speed 2 demanded over BE4
BE7 (1), (2): Speed 2 demanded over BE7
Note:
If the functions
External demand for operation
(Fb13 = ON) and
External demand for fan
speed 2 with BE4
(Fb19 = ON, BE4) are configured, the input BE4 loses the function descri-
bed in section 7.8 (system OFF) as a result.
72
EB 5477 EN
System-wide functions
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