Lamtec VMS Series, Manual

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6 Commissioning
6.6.5.3 Changing the O2 setpoint curve
Vorgehensweise wie unter Eingabe von O
2
-Sollwert beschrieben.
Kanaltaster 4 (2) jedoch anstelle nach oben nach unten drücken.
Turn selector switch (1) to Status
6.6.5.4 Calling up the Set Correction Mode
The correction should be taken into account during later programming. The correction should
be able to take effect before the VMS reaches actuator stop.
6.6.5.5 Calculation Of Control Parameters
The setting of parameters P 898/P 899 and P 900 should be such that the next target/actual
value comparison (actuation pulse) takes place only if the O
2
actual value has changed dis-
cernibly. A ;-at the centre of the target value display indicates that a target/actual val-
ue comparison is being performed.
No change or change too small:

Increase P-factor parameter 899.
Turn selector switch (1) to STATUS
Press ENTER (3)

The display shows the selected correction range
If both correction inputs operate on one channel, the
sums are shown (e.g. 15
points).
Press ENTER (3) again, or
Turn selector switch (1) back

return to normal display
Run burner on low firing rate.
Turn selector switch (2) to O
2
TRIM

The display shows a text message
Push channel key 4 (5) downwards

Text message disappears from the display
Turn selector switch (1) to target value
Push channel key 2 (4) upwards

The O
2
controller is activated when this is set,
visible through the display T
The O
2
target value can now be adjusted using channel
key 3 (6) within a range of +3 to -1 vol.% O
2
from the
target value entered. The change in the actual O
2
value
can be observed on the display at the same time.
Channel key 3 (6) upwards
→ more O
2
Channel key 3 (6) downwards → less O
2