Siemens LMV50 series

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Building Technologies Basic Documentation LMV5... CC1P7550en
5 Sequence diagrams 22.05.2018
Indices:
1) Parameter:
ValveProvingType ↑ Valve proving takes place between phases 30 / 32 and/or
phases 60 / 70
2) Parameter: Short / long preignition time for oil only
Short / long oil pump – ON – time
3) Delayed shutdown within safety time
5) Parameter: Normal / direct startup
Normal startup ↑ sequential phase = 10
Direct startup ↑ sequential phase = 79 (when R = ON)
6) Sequential phase = 24
7) Only with valve proving during startup
8) Parameter: With / without alarm on prevention of startup
9) Parameter: With continuous purging the shown output signals are inverted
10) Fan controlled as before
Postpurging in lockout position = PostpurgeLockout
11) Parameter: With / without extraneous light test in STANDBY
12) With valve proving during startup phase 10
13) Parameter: Normal / continuous purging
Normal purging:
Checking for off in 10 and 12, stop to phase-max time ↑ 01
Continuous purging:
Checking for on in 10 and 12, stop up to phase-max time ↑ 01
14) Parameter:
OilPressureMin, act from ts ↑ no check before fist safety time (LO, HO) or
second safety time (LOgp, HOgp)
15) Parameter:
GasPressureMin, deact xOGP ↑ pressure switch-min (Pmin) can be
deactivated for oil programs with gas pilot
16) Parameter:
OilPumpCoupling:
direct_coupl ↑ shutoff valve - oil to be connected to output Oil pump / magnetic
clutch. Output is active when fan is on and for another 15 s after fan is switched
off
18) Parameter:
Alarm act / deact, deactivated↑ alarm output can temporarily be deactivated (for
current error only)
19) Parameter: Only LMV50 and LMV52: Continuous pilot gas/oil: Activated ↑ pilot valve is also
activated in operation
20) Parameter: Only LMV50 and LMV52: Extraneous light, pilot phase, operating phase gas/oil
↑ Separate flame supervision possible
22) Parameter:
Depending on parameter StartPoint Op
23) Parameter:
Depending on parameter DriveLowfire Gas or DriveLowfire Oil
24) Parameter:
Depending on parameter HeavyOilDirStart
25) Parameter: Air pressure test = deactivated in standby ↑ don’t care in phase 10 and 12
26) Parameter:
Long postpurge time tn3 (PostpurgeT3long)
27) Parameter: Only LMV50 ↑ cooling function in standby
28) Parameter: Continuous purging
Repetition counter:
k) Heavy oil direct start
l) Restricted startup behavior
n) Restricted safety loop
Legend to the sequence diagrams (cont'd)