Startup Sequence Stop In Phase 36; Cooling Function In Standby Mode (Only Lmv50); Long Postpurge Time (Only Lmv50 / Lmv52.4) - Siemens LMV50 Series Manual

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4.2.3.14 Startup sequence stop in phase 36

The burner's startup sequence can be stopped in phase 36 via input X5-03 pin 3 if
parameter Config X5-03 has been set to DeaO2/Stp36.
The stop takes place if no mains voltage is present.
Attention!
This function may only be used for non-safety-related multiple burner
applications.
Ι
Note!
At the same time as this parameter setting, input X5-03 pin 2 is set to deactivation of
O2 trim control (DeaO2/Stp36).
This function cannot be used if the inputs (X5-03 pin 2 / pin 3) are being used to
connect an external load controller
(LC_OptgMode = ExtLC X5-03) ↑ invalid parameter setting.
Parameter Config X5-03 (DeaO2/Stp36)

4.2.3.15 Cooling function in standby mode (only LMV50)

In order to cool the burner in standby mode, a cooling function can be activated using
parameters.
The cooling function is started with a mains voltage signal at input X5-03 pin 3:
∂
The fan is switched on and supervised in the same way as for continuous purging
∂
The actuators used for determining the amount of air are driven to their postpurge
positions
∂
If no mains voltage signal is present, the device behaves as for without continuous
purging in standby mode
Parameter Config X5-03 (CoolFctStby)
Attention!
This function may only be used for non-safety-related
multiple burner applications.
This means, for example, that the function may not be used for safety-related
purging in plants with several burners in one combustion chamber.
Note!
∂
This function cannot be used if the inputs (X5-03 pin 2 / pin 3) are being used to
connect an external load controller (LC_OptgMode = ExtLC X5-03) ↑ invalid
parameter setting
∂
When using the cooling function, the ContinuousPurge parameter must not be set
to off Sloop or deac/VSD-SL as these settings cancel each other out, potentially
resulting in error messages

4.2.3.16 Long postpurge time (only LMV50 / LMV52.4)

If a long postpurge time is required, an additional time can be set in one-minute
intervals via an additional, non fuel-specific parameter PostpurgeT3long.
This time is added to the two fuel-specific times PostpurgeT3Gas / Oil.
Parameter PostpurgeT3long
Basic Documentation LMV5...
4 Burner control
CC1P7550en
22.05.2018