Dungs VPM-VC Руководство - Страница 5
Просмотреть онлайн или скачать pdf Руководство для Блок управления Dungs VPM-VC. Dungs VPM-VC 10 страниц. Control unit for system leakage tests
Печатать страницуModification of the program sequence by an application-specific setting of the B/C DIP switches
AAAA
BBBB
A
Test sequence
1100
Test during the start
phase before burner
ignition
1001
Test after regular
shutdown
0011
Test after regular shut-
down in reduced mode
without additional
operating cycles
Operating mode
"T- Down optimised":
after regular switch-off,
one valve is tested at a
time alternatively,
the other valve is kept
open. The alternation
takes place during
release, when remov-
ing the test request
next time.
- burner with
frequent starts
- longer valve life
- reduced power con-
sumption
5 ... 10
CCCC
B
t
V1, V2 test time
test
1100
0110
1001
0011
t
test
A
B
0000
0000
10 s
22 s
30 s
55 s
The following can
be changed via the
software:
P22 for test time V1
P23 for test time V2
If this switch position is
used, parameter set-
ting should be checked
via the VisionBox.
For the calculation of
the test times, see p. 7
Setting must be higher
than the calculated
time.
t
> t
, t
DIP
test V1
test V2
C
0000
C
Number of venting or
filling attempts
1100
Venting 10 (�)
Filling 1
0110
Venting 1
Filling 1
1001
Venting 1
Filling 10
0011
Venting 3 (�)
Filling 3 (�)
The following can
be changed via the
software:
P32: Number of vent-
ing operations
P31: Number of filling
operations
If this switch position is
used, parameter set-
ting should be checked
via the VisionBox.
For more detailed ex-
�
planations, see instal-
lation examples in the
VPM-VC operating and
mounting instructions.
According to EN1643,
1 filling or 1 empty-
ing attempt for max.
3 s into the burner
chamber is admissible
(DUNGS as-delivered
configuration). At filling
and emptying times
of 1 s of the gas main
valves, max. 3 attempts
are admissible.
If the number of vent-
ing attempts is higher,
venting must be into
a safe area (LGV vent
valve).