Siemens VALVEGYR LDU11.523A17 Manual do utilizador - Página 11
Procurar online ou descarregar pdf Manual do utilizador para Unidade de controlo Siemens VALVEGYR LDU11.523A17. Siemens VALVEGYR LDU11.523A17 22 páginas. Valve proving system for automatic shutoff valves ldu11...
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Sequence diagram
A
a
I
b
III
IV
t4
a
V
b
VI
a
b
VII
a
VIII
b
t6
a
IX
b
a
XI
b
XIII
a
b
AR
Program indication
Legend
t1
22.1 s
First test phase with atmospheric pressure
t2
27 s
Second test phase with gas pressure
For LDU11.323...
t3
2.5 s
Filling the test space
t4
2.5 s
Evacuating the test space
For LDU11.523...
t3
5 s
Filling the test space
t4
5 s
Evacuating the test space
t5
66.3 s
Total duration of valve proving test until burner is released
t6
7.4 s
Interval from start to energizing working relay (AR)
t20 22.1 s
Running time of programming mechanism until it switches itself off in the operating = start position (idle steps)
A
Gas valves controlled to evacuate the test space
B
Gas valves controlled to fill the test space
C
Vent valve, normally open; closed during valve proving test from the beginning of «Test1»
Building Technologies Division
t5
t1
t3
Test1
B
t2
Test2
C
7
t20
5
9
9
10
11
15
11
12
Output terminals
controlled by the
control unit or
electrically
connected
7696b01e/0601
CC1N7696en
20.04.2016
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6
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