Siemens SQN72 Series - Circuit Diagrams and Control Sequences (LME22); Diagram Conventions and Notes; LME22 2-Stage;Modulating Operation

13/20
Smart Infrastructure CC1N7802en
8/11/2021
Circuit diagrams (examples)
Please note!
All of the following circuit diagrams show the start position as supplied:
 End switch position II CLOSED

No
voltage
No. A  LME22
2-stage or modulating operation  prepurging at high-fire position (NL)
X1
Plug
-
in space, 4
-
pole
X2
Plug
-
in space, 5
-
pole
I
II
III
IV
red
blue
orange
black
Program sequence diagram shows
2-stage operation.