BCU 580 · Edition 11.15
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10 .6 .2 Running time selection
Parameter 41
Parameter 41 = 0: Off; checking the positions for minimum/
maximum capacity. A signal that the positions for minimum
and maximum capacity have been reached is returned and
monitored with a timeout time of max. 255 s. When the position
has been reached, the BCU will initiate the next program step.
Parameter 41 = 1: On; for approaching the positions for mini-
mum/maximum capacity. The Running time set using param-
eter 42 is activated for approaching these positions. After this
time has elapsed, the BCU will initiate the next program step.
Parameter 41 = 2: On; for approaching the position for maxi-
mum capacity. The Running time set using parameter 42 is
activated for approaching the position for maximum capacity.
After this time has elapsed, the BCU will initiate the next pro-
gram step. Approaching the position for minimum capacity
is signalled and monitored.
Parameter 41 = 3: On; for approaching the position for mini-
mum capacity. No signal is returned that the position for mini-
mum capacity has been reached. The Running time set using
parameter 42 is activated for approaching the position for
minimum capacity. After this time has elapsed, the BCU will
initiate the next program step. Approaching the position for
maximum capacity is signalled and monitored.
10 .6 .3 Running time
Parameter 42
This parameter can be used to adjust the behaviour of slow
opening and closing air valves. The running time starts when
the air actuator is switched off. A restart of the burner after a
controlled shut-down, a start-up attempt, restart, cooling or
purging is delayed until the end of the running time. After the
running time has elapsed, the burner is started if the start-up
signal (
ϑ
) is applied.
The time should be adjusted such that the system can be set
to ignition position, i.e. that the air actuator is closed before
a start-up is initiated.
Parameters > Air control
