Time Table And Settings For Program Sequence Pme73.830 - Siemens LME7 Series Basic Documentation

17.3 Time table and settings for program sequence PME73.830...

Type
TSA
PME73.830... tw
max.
Requirement 2.5 3
Factory setting --- t3n+0.45 29.106+2.1
Max. 2.5 14 1237+2.1
Min. --- ---
Step size --- ---
Function parameter
Repetition in the event of loss of flame during operation
<2: None
= 2: 1 x
Valve proving
0: Inactive
1: Active
Valve proving
0: During prepurge time
1: During postpurge time
Valve proving
0: According to P241.01
1: During prepurge time and postpurge time
Actuator position during prepurge time and postpurge time
0: Purging in low-fire
1: Purging in high-fire
Legend
tw Waiting time
TSA Safety time
t1 Prepurge time
t3 Preignition time
t3n Postignition time (P257 +0.3 seconds)
t4 Interval: End of safety time - fuel valve 1 ON
t5 Interval: Pilot valve OFF - load controller release
t8 Postpurge time
t9 Interval: Fuel valve 1 ON - pilot valve OFF
1)
Response time to a change of signal by air pressure switch
2) Response time to a change of signal by inputs (e.g. pressure switch-min)
3) Flame detection time
4) Minimum time td1 + td2 + td3 + td4 if: Parameter P241.00 = 1 (ON), after mains ON, with lockout, P234 (postpurge time) = 0 (postpurging) or P241.01 = 0
5) Minimum time td1 + td2 + td3 + td4 if: Parameter P241.00 = 1 (ON) and P234 (postpurge time) >0 (postpurging) and P241.01 = 1
Building Technologies Division
Infrastructure & Cities Sector
t1
t3 t3n t4
P225
P226 P257 P230
4)
min. approx. min.
min.
30 6 2.5 9
6.174 2.205+0.3 9.408
37.485 13.23+0.3 74.97
0+2.1 1.029 0+0.3 3.234
4.851 0.147 0.147 0.294
Parameter number
P241.00
P241.01
P241.02
t10
t11
t12
t22
td1
td2
td3
td4
( ) and response time in the event of loss of flame
opens
Basic Documentation LME7...
17 PME73.830...
Times in seconds
t8
t5 t9 t10
P234
P232 P231 P224
5)
min. approx. approx.
min.
8.5 15 3 15
8.82 19.404 2.646 13.818
74.97 1237 74.97 13.818
2.058 0 0 0
0.294 4.851 0.294 0.294
Factory setting
P240 0
1
1
0
P515 1
Specified time air pressure switch state message (timeout)
Opening time of actuator (timeout)
Closing time of actuator (timeout)
2nd safety time
Test atmospheric pressure
Test gas pressure
Test space filling
Test space evacuating
t11 t12
P259 P260 t22 1) 2)
approx. approx.
300 300 t9+1 --- ---
300.762 300.762 --- --- ---
1237 1237 --- 1 0.45
0 0 --- 0.3 0.3
4.851 4.851 --- --- ---
td1 td3
3) td2 td4
min. max.
--- 10 3
--- 10.29 2.646
0.45 37.485 2.646
--- 1.029 0
--- 0.147 0.147
125/245
CC1P7105en
29.11.2011