Siemens LME7 Series Basic Documentation page 66
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- Technical instructions (140 pages) ,
- Basic documentation (245 pages) ,
- Manual (106 pages)
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13.4 Time table and settings for program sequence PME73.810...
Type
TSA
PME73.810...
tw
max.
Requirement
2.5
3
Factory setting
---
t3n+0.45
Max.
2.5
14
Min.
---
---
Step size
---
---
Function parameter
1
Repetition in the event of lost of flame during operation
<2: None
= 2: 1 x
2
Valve proving
0: Inactive
1: Active
3
Valve proving
0: During prepurge time (t1)
1: During postpurge time (t8)
4
Valve proving
0: According to P241.01
1: During prepurge time (t1) and postpurge time (t8)
5
Actuator position during prepurge time (t1) and postpurge time (t8)
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 safety time (TSA) - load controller (LR) release
t8
Postpurge 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
4)
Minimum time td1 + td2 + td3 + td4 if: Parameter P241.00 = 1 (ON, after main ON, with lockout, P234 (postpurge time (t8)) = 0 (postpurging) or P241.01 = 0
5)
Minimum time td1 + td2 + td3 + td4 if: Parameter P241.00 = 1 (ON) and P234 (Postpurge time (t8)) >0 (postpurging) and P241.01 = 1
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t1
t3
t3n
t4
P225
P226
P257
P230
4)
min.
approx.
min.
min.
30
6
2.5
29.106+2.1
6.174
2.205+0.3
9.408
1237+2.1
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
Basisdokumentation LME7...
13 PME73.810...
Times in seconds
t8
t11
P234
t10
P259
5)
approx.
approx.
approx.
min.
9
15
15
300
19.404
13.818
300.762
300.762
1237
13.818
1237
0
0
0
4.851
0.294
4.851
Factory setting
P240
0
P241.00
1
P241.01
1
P241.02
0
P515
1
t10
Specified time air pressure switch (LP) state message (timeout)
t11
Opening time of actuator (timeout)
t12
Closing time of actuator (timeout)
td1
Test atmospheric pressure
td2
Test gas pressure
td3
Test space filling
td4
Test space evacuating
t12
td1
P260
1)
2)
3)
td2
min.
300
---
---
---
10
---
---
---
10.29
1237
1
0.45
0.45
37.485
0
0.3
0.3
---
1.029
4.851
---
---
---
0.147
td3
td4
max.
3
2.646
2.646
0
0.147
51/164
CC1P7105de
24.09.2009
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