Kromschroder FCU 500 - Air Control; Fan in the Event of Fault; Fan Run-Up Time T GV; Fan Ready for Operation

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.