Loss Of Flame; Extraneous Light - Siemens LMV36.520A1 Basic Documentation

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7.2.1 Loss of flame

In the event of loss of flame, the unit initiates safety shutdown, followed by a restart, if
required. A repetition counter can be used to select the number of flame losses after
which the unit shall initiate lockout (refer to chapter Repetition counter).
Error Diagnostic
code code
7 0
No. Parameter
Software drop-out delay time of flame signal (100 ms)
186 Index 0 = QRB... / QRC... (0 = inactive, >1)
Index 1 = ION / QRA... (0 = inactive, >3 -only 200 ms steps)
Fuel 1: Software drop-out delay time of flame signal (100 ms)
187 Index 0 = QRB... (0 = inactive, >1)
Index 1 = ION / QRA... (0 = inactive, >3 -only 200 ms steps)
194 Repetition limit no flame at the end of safety time (TSA)
1 = no repetition
2...4 = 1...3 repetitions
Recharging time:
Entering into operation
Repetition limit value loss of flame
240 1 = No repetition
2 = 1 Repetition
280 Repetition limit value loss of flame
1 = No repetition
2 = 1 Repetition
Repetition limit value loss of flame
340 1 = No repetition
2 = 1 Repetition
380 Repetition limit value loss of flame
1 = No repetition
2 = 1 Repetition
Caution!
The response time of the flame detector leads to an extension of the second
safety time (TSA2). This must be taken into account when designing the burner!

7.2.2 Extraneous light

Extraneous light during standby (phase 12) leads to prevention of startup, followed by a
restart. Extraneous light during the prepurge phase results in immediate lockout. If
extraneous light occurs during the shutdown phase, the system switches to the safety
phase.
One repetition is permitted. This means that if the error occurs again the next time the
system is shut down, the unit will initiate lockout.
Error Diagnostic
code code
4 0
1
2
Basic documentation LMV36...
7 Basic unit
Meaning for the LMV36... system
Loss of flame
Meaning for the LMV36... system
Extraneous light during startup
Extraneous light during shutdown
Extraneous light during startup – prevention of startup
CC1P7544en
25.09.2013