Time Table And Settings For Program Sequence Pme71.401 - Siemens LME7 Series Basic Documentation

10.3 Time table and settings for program sequence PME71.401...

Type
TSA
PME71.401... tw
max.
Requirements 2.5 3
Factory setting --- t3n+0.45
Max. 2.5 14
Min. --- ---
Step size --- ---
Function parameter
Repetition in the event of loss of flame during operation
<2: None
= 2: 1 x
Legend
tw Waiting time
TSA Safety time
t1 Prepurge time
t3 Preignition time
1) Response time to a change of signal by the air pressure switch (opens) and response time in the event of loss of flame
2) Response time to a change of signal by the inputs (e.g. pressure switch-min)
3) Flame detection time
Building Technologies Division
Infrastructure & Cities Sector
Times in seconds
t1 t3 t3n
P225 P226 P257
min. min. approx.
30 2 2.5
29.106+2.1 2.058 2.205+0.3
1237+2.1 37.485 13.23+0.3
0+2.1 1.029 0+0.3
4.851 0.147 0.147
Parameter number
Basic Documentation LME7...
10 PME71.401...
t4 t8 t10
P230 P234 P224 1) 2)
min. min. approx.
8 0 15 --- ---
8.232 0 13.818 --- ---
74.97 1237 13.818 1 0.45
3.234 0 0 0.3 0.3
0.294 4.851 0.254 --- ---
Factory setting
P240 0
t3n Postignition time (P257 +0.3 seconds)
t4 Interval: End of safety time – load controller release
t8 Postpurge time
t10 Specified time air pressure switch state message (timeout)
3)
---
---
0.45
---
---
51/245
CC1P7105de
29.11.2011