EB 9520 EN
23
Version with limit contacts
Switching amplifier
acc. to EN 60947-5-6
51
A2
+
–
+
–
A1
52 41 42
Fig. 8:
Terminal assignment of the alarm con
-
tacts
7.2
Adjusting the alarm
contacts
Both the min. contacts A1 and A2 as well as
the combination of a min. contact A1 and
max. contact A2 can be shifted within 0 to
100 % of the adjusted measuring span to
adjust them.
The min. contact and max. contact have dif-
ferent designs. Contact is made when the
metal tag moves approx. 6 mm into the
proximity switch.
Min. contact
Always adjust the switching points according
to the decreasing characteristic. The bottom
edge of the metal tag causes the contact to
be made.
0%
0%
0%
100%
100%
100%
»
»
»
»
»
»
Adjustment range A2
Max. contact
Adjustment range A1
Min. contact
Adjustment range A1
Min. contact
M3 clamping
screw (SW 5.5)
Min. contact A2
Max. contact A2
Max. contact A1
Min. contact A1
Fig. 9:
Adjusting the alarm contacts
Max. contact
Always adjust the switching points according
to the rising characteristic. The top edge of
the contact causes the contact to be made.
Adjustment based on pressure specifica-
tions
1. Connect the device to a switching ampli-
fier as described in section 7.1.
2. Apply a pressure to the high-pressure
connection of the dp cell which corre-
sponds to the desired switching point.
Î
The low-pressure connection of the dp
cell must be open for this purpose.
3. Undo the clamping screw (Fig. 9) at the
proximity switch bracket and manually
move the contact into the desired switch-
ing position (note that the middle of the
bracket indicates the position).
Min. contact
Î
From the left, move the proximity switch
onto the left side of the tag until contact
is made.
Max. contact
1. From the right, move the proximity switch
onto the right side of the tag until contact
is made.
