Function description
Operating Manual PSSu K F EI CV(-T)
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4.10
Proximity switches
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The following proximity switches can be used with a pnp or npn output:
–
Inductive
–
Capacitive
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The proximity switches must be fitted so that at least one is always activated. In other
words, the proximity switches must be fitted so that the recorded signals always over-
lap.
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The cable used to connect the proximity switches must be shielded (see connection
diagrams in the chapter entitled "EMC-compliant wiring").
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A DC voltage in the range of 0 - 30 V can be monitored via track S. It should be used to
monitor the supply voltage of the proximity switches.
CAUTION!
Please note: Connection of the proximity switches may only be performed in
three-wire technology and not in two-wire technology.
Proximity switch assembly:
Ini 1
Ini 2
Signal characteristics:
Proximity switch
combinations
Signal image during movement
PNP / PNP
Ini 1
Ini 2
> 1% of period length
energised
energised
De-energised
De-energised
NPN / NPN
Ini 1
Ini 2
> 1% of period length
De-energised
De-energised
energised
energised
