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2 .2 .2 .4 Electrical connection - totalizer reset
The FC100-CA has an external totalizer reset. The control signal is connected to plug XRE.
The totalizer reset is edge controlled – it is performed when the signal changes from low to high level.
There are two possible operating modes (see fig. 22 and 23).
Operating mode 1
1
2
3
XV
Operating mode 2
1
2
3
XV
Note:
Pin XRE/1 is connected to pin XV2 (+U v ).
The input resistance of pin XRE/2 is 3k�.
Pin XRE/3 is connected to pin XV3 (-U v ).
FC100-CA | Flow Meter
INSTALLATION
reset is performed when
contact is closed
(t
= 50ms)
min
1
2
3
4
5
6
7
XSK
reset is performed when
signal changes from low
to high
(t
min
1
2
3
4
5
6
7
XSK
potential free
normaly open contact
8
9
10
1
2
XRE
10 ... 40 V DC
t
= 50ms
min
+
= 50ms)
8
9
10
1
2
XRE
3
fig. 22
-
3
fig. 23
33
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