Time Table And Settings For Program Sequence Pme72.521 - Siemens LME7 Series Basic Documentation

11.4 Time table and settings for program sequence PME72.521...

Type
TSA t1
PME72.521... tw
max. min.
Requirement 2.5 3 30
Factory setting --- --- ---
Max. 2.5 3 ---
Min. --- --- 30
Step size --- --- ---
Legend
tw Waiting time
TSA Safety time
t1 Prepurge time
t3 Preignition time
t3n Postignition time
1) Reaction time at change of signal by air pressure switch contact (open of air pressure switch (LP)) and response time in the event of loss of flame
2) Reaction time at change of signal by inputs (e.g. pressure switch-min (Pmin))
3) Flame detection time
Building Technologies
HVAC Products
Times in seconds
t3 t3n t4 t8 t10
min. approx. min. min. approx.
6 2.5 9 15 15
--- --- --- --- ---
--- --- --- --- ---
6 --- 9 15 ---
--- --- --- --- ---
Basisdokumentation LME7...
11 PME72.521...
t11 t12
1) 2) 3)
approx. approx.
300 300 --- --- ---
--- --- --- --- ---
--- --- 1 0.45 0.45
--- --- 0.3 0.3 ---
--- --- --- --- ---
t4 Interval: End of safety time (TSA) – load controller (LR) release
t8 Postpurge time
t10 Specified time air pressure switch (LP) state message (timeout)
t11 Opening time of actuator (timeout)
t12 Closing time of actuator (timeout)
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CC1P7105de
24.09.2009