29 … 68
28 … 68
Printed in Germany • Edition 02.14 • Nr. 254 722
8 Parameters
8.4 P4x - VPS
Parameter
P4x
Designation Description Setting
P40 VPS: active during
startup
Setting 0: The valve test is not
always carried out during startup
(depending on P41)
Setting 1: The valve test is carried
out in each startup phase
P41 VPS: active after
switch-o
Setting 0: The valve test is never
carried out after a regular switch-
o
Setting 1: The valve test is carried
out after every switch-o and, if
necessary, in the startup phase
(see section "Operation with valve
testing system")
P42 VPS: Duration Emp-
tying area between
valves
Indicates how long V2 will be
opened in order to let the possible
overpressure escape into the com-
bustion chamber.
P42 VPS: Test time V1 Indicates the duration of the test in
order to nd out whether a pressure
is being built up in the area between
the valves.
P44 VPS: Duration Filling
area between valves
Indicates how long V1 will be
opened in order to let gas ow into
the area between the valves.
P45 VPS: Test time V2 Indicates the duration of the test in
order to nd out whether gas es-
capes from the area between the
valves.
P46 VPS: GDWVPS as
minimum monitoring
The GDWVPS input can also be
used for the monitoring of the mini-
mum gas pressure. For doing this,
this parameter must be set to "Ac-
tive".
If this value is inactive, the GD-
WVPS input is only evaluated dur-
ing the valve test.
For the calculation of these parameters or for the settings recommended by DUNGS, see 7.4.2 Operation with valve
testing system.
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