Siemens LMV5 Series - Block Diagram: Inputs; Outputs (contd); LMV5... Gas and Oil Fuel Control Connections; Flame Supervision Terminal Assignments

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Building Technologies Division CC1N7550en
Industry Sector 24.05.2011
Block diagram inputs / outputs (cont´d)
PRI
LINE
Neutral conductor
Power signal
transformer
A
C power signal G0
AC power signal G
1
T1
A
GG5.2
P
On/Off
Power signal for
air pressure switch (LP)
P
P
max
Power signal for
oil pressure switch-min
Power signal for
start release oil
START
HO-START
P
max
LT
L1'
Power signal (L)
QRB signal voltage
QRB
INT
P
P
7550a10.2e/0511
Black
Power signal for
start release gas
START
FLAME alternative 2
QRA
Power signal (L)
Power signal (L)
FLAME alternative 3
FLAME alternative 1
PE