Siemens LME7 Series Basic Documentation page 149

Key to phases
Building Technologies Division
Infrastructure & Cities Sector
Phase Function
number
LOC Lockout shutdown phase
OFF Standby, waiting for heat request
oP1/oP:P1 Part 1: Request load controller OPEN
Part 2: Modulation of actuator toward high-fire
Part 3: High-fire reached
Part 4: Request load controller CLOSE
Part 5: Modulation of actuator toward low-fire
Part 6: Low-fire reached
10 Shutdown, actuator travels to the CLOSED position (home run)
21 Safety valve ON, air pressure switch in no-load position
Check if POC is closed, actuator travels to the CLOSED position
22 Part 1: Fan motor ON
Part 2: Specified time air pressure switch
24 Opening time of actuator (timeout)
30 Part 1: Prepurge time without flame simulation test
Part 2: Prepurge time with flame simulation test (2.1 seconds)
36 Closing time of actuator (timeout)
38 Preignition time
40 Postignition time, parameter 257 + 0.3 seconds
42 Flame detection
44 Interval: End of ignition safety time and load controller
release
44 Interval: End of ignition safety time and fuel valve 2 ON
50 Part 1: Interval: Fuel valve 1 ON and pilot valve OFF
Part 2: Response time
72 Opening time of actuator (timeout)
74 Part 1: Operation is ended, check if postpurging is programmed
Part 2: Postpurge time
Valve proving when...
parameter 241.00 = 1 and
parameter 234 (postpurge time) >0 seconds and
parameter 241.01 = 1
80 Test space is evacuated
81 Atmospheric pressure test
81 Proving time fuel valve 1
82 Test space is filled
83 Proving time fuel valve 2
*) During the actuator's running phases, the actuator's feedback signal
must first be OFF, then ON
Basic Documentation LME7...
19 PME73.840...
Message (timeout), stabelization of air pressure switch
Valve proving when...
parameter 241.00 = 1 after power ON, lockout, or
parameter 234 (postpurge time) = 0 second or
parameter 241.01 = 1
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CC1P7105en
29.11.2011