65/245
Building Technologies Division
Basic Documentation LME7...
CC1P7105en
Infrastructure & Cities Sector
12 PME71.901...
29.11.2011
12.2 Connection diagrams for fuel train
applications
(examples)
12.2.1 Gas direct ignition (G), 1-stage
SV
V1
Program
G
Gas direct 1-stage
X7-04
LME71.000...
X7-01
Figure 22: Connection diagram fuel train gas direct ignition (G), 1-stage
12.2.2 Gas direct ignition (G), 1-stage and valve proving
SV
V1
Program
G
Gas direct 1-stage, with valve proving
X7-04
LME71.000...
V2
X7-01
Figure 23: Connection diagram fuel train gas direct ignition (G), 1-stage, with valve proving
Note:
When valve proving is activated (e.g. on shutdown), the load on the valve’s
terminals (according to chapter
Technical data/Terminal rating Outputs
) is
restricted.
Fuel valve 1 X7-04 pin 4/fuel valve 2 X7-02 pin 3/auxiliary output
Rated voltage
AC 120 V
AC 230 V
50/60 Hz
50/60 Hz
Rated current
1 A
1 A
Power
factor
cos
>0.4
cos
>0.4
If the terminal load (according to chapter
Technical data/Terminal rating
Outputs
) is not reduced (max. rated current 2 A, cos
>0.4), the design
lifetime will be reached after about 100,000 burner startup cycles!