FCU 500, FCU 505 · Edition 02.17
87
Parameters
12 .4 Air control
12 .4 .1 Fan in the event of fault
Parameter 29
This parameter defines how the fan should act in the
event of a safety shut-down or fault lock-out.
Parameter 29 = 0: OFF; the fan is switched off
Parameter 29 = 1: ON; the fan runs until the start-up
signal is received at terminal 1
12 .4 .2 Fan run-up time t
GV
Parameter 30
This parameter defines the time between the activation
of the fan output (terminal 58) and the start of the FCU
program sequence (display
01
).
The fan run-up time can be parameterized in a range
between 0 and 250 s.
12 .4 .3 Fan ready for operation
Parameter 31
Using this parameter, it is possible to select whether a
feedback from the ready fan is to be taken into consid-
eration by the FCU. The fan sends a binary feedback
signal to terminal 44 of the FCU if it is available for
operation. If there is no signal, the FCU will perform a
shut-down, depending on the function selected in pa-
rameter 31.
Parameter 31 = 0: OFF; the function is not required
Parameter 31 = 1: with safety shut-down
A safety shut-down will be performed if there is no input
signal.
Parameter 31 = 2: with fault lock-out
A fault lock-out will be performed if there is no input
signal.
