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Building Technologies Division Basic documentation LMV36... CC1P7544en
Infrastructure & Citiies Sector 11 Electronic fuel-air ratio control 25.09.2013
11.3.6 Setting the minimum and maximum output
For changes regarding setting of the minimum and maximum output after the
curve settings, note the following:
After leaving the curve settings with completely defined curvepoints, proceed in
modulating operation by setting the minimum / maximum output (parameters 546 /
545 or 566 / 565).
In case of the warm setting, the parameterized output remains active until setting of
the minimum / maximum output is completed. Any change to the minimum /
maximum output is included in the parameterized output. Automatic operation
becomes active only after leaving the minimum / maximum output.
As a result of this procedure, the system maintains the output set by the user, thus
ensuring trouble-free setting of the minimum / maximum output.
Advantages:
- The actual output always corresponds to the currently parameterized minimum /
maximum output or the system output resulting from the curve setting made last,
which means that the output can be ascertained accurately and without
interference
- The
load sources of low priority (contacts, analog input, BAC system output,
manual output) are inactive
-
During the curve and the subsequent minimum/maximum output settings, the
Manual OFF function is deactivated
-
Unambiguous and easy-to-understand behavior of the system
Note
If output limitation is not required, the minimum / maximum output need not be
set.
In that case, an undefined minimum / maximum output corresponds to a minimum
output of 20% and a maximum output of 100%.
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