Siemens LME7 Series Technical Instructions page 37

LME Series
Terminal
X3-04.5
X3-04.1
X5-03.1
X5-01.2
X10-05.2
X10-06.1/2
X2-02.4
X2-02.3
X6-03.3
X2-01.3
X4-02.3
X7-04.4
X2-03.3
X7-01.3
SCC Inc.
PME71.112A1 Phase Diagram
Phase
Param.
Description Notes
Main Voltage
Safety Loop
Burner On
Gas Pressure Switch(es)
Flame Signal
POC (P237 = 1)
POC (P237 = 2)
POC Source
Safety Valve
Blower
Ignition Transformer
Main Valve V1 Note 1
Alarm
Pilot Valve (P247 = 0) Note 1
Pilot Valve (P247 = 1)
Legend :
LOC OFF 21 22 40 42 44
257 230
STARTUP
SAFETY
TIME 1
X X
M
X X X
X X
X X
X X X
X X X X X X
X X X X X X X
X X X X X X
X X X X
X X X X
M
Energized Must be energized by end of phase
Energized or de-energized
X
De-energized
Page 13
Technical Instructions
50 50 oP1 10
231 254 240
OPER-
SHUTDOWN
ATION
X
X
X
X
X
X X X X
X
X X X X
X X X
X
LME-1000
Section 2