ELECTRICAL CONNECTIONS
4
27
H250 M40
www.krohne.com
03/2020 - 4000640706 - MA H250-M40 R06 en
Connection diagram for the limit switches
Limit setting
Setting is carried out directly via contact pointers
1
and
2
:
•
Pull the upper scale support 2 mm / 0.08" flexibly upwards and pull out the scale from its
locking point to the side.
•
Loosen the locking screw
3
slightly.
•
Slide in the scale up to the locking point.
•
Set contact pointers
1
and
2
to the desired switching point.
Figure 4-2: Connection terminals for limit switches
1
Limit switch 2-wire NAMUR
2
Limit switch 3-wire
3
Limit switch Reed SPST
4
Terminal connection of Min. contact
5
Terminal connection of Max. contact
6
3-wire load
7
NAMUR isolated switching amplifier
8
3-wire power supply
Figure 4-3: Limit setting
1
Contact pointer MAX
2
Contact pointer MIN
3
Locking screw (max. tightening torque is 0.2 Nm)
4
Scale support
