Siemens LME7 Series Basic Documentation page 56
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Also See for LME7 Series:
- Technical instructions (140 pages) ,
- Basic documentation (245 pages) ,
- Manual (106 pages)
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12.4 Time table and settings for program sequence PME72.541...
Type
PME72.541...
tw
Requirement
2.5
Factory setting
---
Max.
2.5
Min.
---
Step size
---
Legend
tw
Waiting time
TSA
Safety time
t1
Prepurge time
t3
Preignition time
t3n
Postignition time
t4
Interval: End of safety time (TSA) - fuel valve 1 (V1) ON
t5
Interval: Pilot valve (PV) OFF - load controller (LR) release
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
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HVAC Products
TSA
t1
t3
t3n
max.
min.
min.
approx.
3
30
6
2.5
---
---
---
---
3
---
---
---
---
30
6
---
---
---
---
---
Basisdokumentation LME7...
12 PME72.541...
Times in seconds
t4
t5
t8
t9
t10
min.
min.
min.
approx.
approx.
9
8.5
15
3
15
---
---
---
---
---
---
---
---
---
---
9
8.5
15
---
---
---
---
---
---
---
t8
Postpurge time
t9
Interval: Fuel valve 1 (V1) ON - pilot valve (PV) OFF
t10
Specified time air pressure switch (LP) state message (timeout)
t11
Opening time of actuator (timeout)
Closing time of actuator (timeout)
t12
t22
2nd safety time (TSA2)
t11
t12
t22
1)
approx.
approx.
300
300
t9+1
---
---
---
---
---
---
---
---
1
0.45
---
---
---
0.3
---
---
---
---
2)
3)
---
---
---
---
0.45
0.3
---
---
---
56/164
CC1P7105de
24.09.2009
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