Entering The Running Position; Operating Position - Siemens LMV37.4 Series Basic Documentation

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VSD
Between the ignition time (P0) and the low-fire point (P1), a speed differential of up to
40% can be set for the VSD, independent of the selected ramp. This means that the
period of time from ignition to low-fire can vary between 4...32 s (5...40 s ramp).
Error Diagnostic
code code
84 Bit 0
Valency 1
Bit 1
Valency 2..3
Bit 2
Valency 4..7

10.3.3 Entering the running position

The burner is ignited when ignition position P0 is reached. When entering operating
phase 60, the actuators follow the defined curves until the low-fire position is reached
(20% or parameter 545).

10.3.4 Operating position

As demanded by the load controller, the actuators are driven along the defined 20% and
100% curves. Point of ignition P0 can only be reached via the curve settings.
Basic documentation LMV37.4...
10 Electronic air-fuel ratio control
Meaning for the LMV37.4... system
VSD: Curve too steep in terms of ramp rate
Fuel actuator: Curve too steep in terms of ramp speed
Air actuator: Curve too steep in terms of ramp speed
CC1P7546en
20.09.2013