Limit Switch - KROHNE BW 25 Handbook

BW25

4.2 Limit switch

Indicator M9 can be equipped with a maximum of two electronic limit switches. The limit switch
functions with a slot sensor which is operated inductively through the semicircular metal vane
belonging to the measuring pointer. The switching points are set through the contact pointers.
The position of the contact pointer is indicated on the scale.
Limit switch module
Figure 4-1:
1 Min. contact
Max. contact
2
Locking screw
3
Contact pointer
4
5 Connection terminal
The connecting terminals have a pluggable design and can be removed in order to connect the
lines. The built-in contact types are shown on the indicator.
Electrical connection of the limit switches Electrical connection of the limit switches Electrical connection of the limit switches Electrical connection of the limit switches
Contact
Terminal no.
2-wire connection
3-wire connection
10/2008 • 4000432301 MA BW25 R01 en
ELECTRICAL CONNECTION INDICATOR M9
MIN
1 2
- +
+ DC
www.krohne.com
MAX
3 4
-
- + DC
4
5 6
+
-
17