Siemens LME7 Series Basic Documentation

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

Siemens LME7 Series Specifications

General

Brand	Siemens
Model	LME7 Series
Category	Controller
Language	English