21 … 68
20 … 68
Printed in Germany • Edition 02.14 • Nr. 254 722
8 Parameters
8.1 P1x General parameters
Parameter
P1x
Designation Description Setting / Examples
P14 Operating mode LDW The LDW (air pressure detector)
must be activated!
It must be set in a way to guarantee
an activation also if there is only a
minimum power.
Basically, DUNGS recommends to
use the operating mode 0. Excep-
tions can partly be accepted. The
LDW can be operated in 4 operat-
ing modes.
Setting 0:
The LDW is active and is moni-
tored.
Setting 1:
No idle state control is carried out.
Otherwise, the LDW is permanent-
ly active. Attention! Ifthe LDW is
jammed or if there is a wire bridge
there will be no error message dur-
ing the startup phase!
Setting 2:
The LDW is monitored only during
startup, that means only to the state
"Waiting for air pressure". In the fol-
lowing state, an LDW which is not
active does NOT result in an error
message.
Setting 3:
The LDW is monitored during the
startup phase if the current modula-
tion degree is higher than the start
modulation degree in the standard
mode. That means that, in case of
small modulations, the LDW can
switch-o without generating the
error message "No air pressure"
and deactivating the MPA.
Moreover, the LDW is not moni-
tored after the pre-aeration until the
standard mode is reached and, in
case of a regular switch-o, it is not
monitored until the post-aeration is
reached.
Attention! This operating mode is
only allowed, if the fan is controlled
(internal plausibility check of the
feedback signals).
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