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The mounting situation (immersion depth, probe length, operating conditions) largely determines the
measuring accuracy of the level switch to be achieved.
CAUTION
The following notes must absolutely be observed:
The permissible data (see type label) must be kept.
The level switch must be protected against magnetic fields.
The sliding tube of the level switch must not be bent and severe shocks must be avoided, to
avoid damage to internal reed contact.
Existing adjusting rings, gripping rings or clamping brackets must not be displaced since
otherwise the SPST or SPDT function is no longer guaranteed.
Electrical connection is to be carried out dependent on the type of switch (see type label) according
to the chart below. Wrong assignment of the connections may cause malfunctions or incorrect
switch outputs.
Electrical connection
Plug
Model with 2
Model with 1
M 12x1
switch point
switch point and
4/5/8-pin
1 analog output
1
+Ub
+Ub
2
SP2
Signal
3
OV
0V
4
SP1
SP1
5
-
6
-
7
-
8
-
Plug
4
Model with 2
Model with 2 switch point
switch point and
(relay-contacts)
1 analog output
+Ub
+Ub
Signal
SP1a
0V
SP1b
SP1
0V
-
SP2
SP2a
-
-
SP2b
-
-
-
-
Housing
6
Commissioning/Operation
The level switch may only be commissioned and operated by authorized staff.
Do not put the switch into operation when the switch itself or the connection cable is damaged.
Be aware of the fact that in case of operation with higher temperatures the casing surface may
become very warm!
A self-test is performed on first switch on. If the software recognizes an error during the self-test or
during operation, this is signalled in the display by "Err" and the corresponding message, refer to
Error list on page 7. The red LEDs S1 and S2 signal the activity of the two switching points.
Operation of the level switch is menu-driven via three membrane keys
The keys may be damaged by pointed, hard objects. Do not use any pointed, hard objects for
making entries.
NC
For information about the factory settings for the parameters and how to change them please refer
to the next chapter 7 "Programming".
7
Programming
NO
Navigation function
Menu descending
-
Menu ascending
Horizontal movement in menu, select menu item
Parameter change ascending
Parameter change descending
Accept parameter change and return to current menu item
Return to measured value display
CAUTION
WARNING
CAUTION
,
and
.
Symbol (membrane key)
Press
+
simultaneously
5
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