KROHNE VA 40-VA 45 EN - Manual (Page 16)

4
ELECTRICAL CONNECTIONS
16
VA40 - VA45
www.krohne.com 09/2013 - 4000424402 MA VA40 45 R04 en
4.2.1 Connection ring type limit switch
The connecting cables of the limit switch are guided through the long slot on the back.
EMC filter unit and back rail of the flowmeter must be galvanically connected and grounded.
The monostable types do not need an EMC filter.
4.2.2 Connection limit switch type MS14
Figure 4-2: Connection of the limit switch type NAMUR
1 Limit switch 2-wire NAMUR
2 Colour coding +
3 Colour coding blue -
4 External EMC filter
5 Receiver device
Connecting diagram 3-wire transistor type
bn - brown supply voltage +
bk - black switch contact
bu - blue supply voltage -
Figure 4-3: Connection limit switch type MS14
1 Connection Reed-switch
2 Connection Receiver device
3 Terminal connection (potential-free)
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