Commissioning
Operating Manual PNOZ m EF 1MM
1003108-EN-11
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6.3
Connection of proximity switches
The following proximity switch combinations can be connected:
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A: pnp, B: pnp
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A: npn, B: npn
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A: pnp, B: npn
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A: npn, B: pnp
When connecting proximity switches please note:
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Proximity switches can be connected to
– terminals A12, B12, GND for axis 1
or
– tracks A, B and GND of the Mini-IO socket (X12 for axis 1).
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Track S (S12) should be used to monitor the supply voltage (see drawing). A permitted
voltage range can be entered in the menu.
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Connect the proximity switch to 24 VDC of the power supply.
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When connecting the proximity switches, please refer to the chapter entitled "EMC-com-
pliant wiring".
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Invalid signals may occur with long cable lengths. In this case we recommend that you
connect a resistor between the signal lines, as shown in the diagrams.
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Connection of the proximity switches may only be performed in three-wire technology and
not in two-wire technology.
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Special features for proximity switches with reduced diagnostics:
– A: pnp, B: pnp
– It is permitted that both proximity switches are energised simultaneously.
– The safety level is reduced.
– The cables for connecting the proximity switches must be laid separately.
– The supply voltage of the proximity switches must be monitored (e.g. via track S).
A12
B12
GND
S12
