Encoders
11.2 Proximity switches
FM 352 electronic cam controller
140 Operating Instructions, 05/2011, A5E01071724-03
11.2 Proximity switches
Definition
Initiators are simple switches which output pulse-shaped signals, and do not return a
directional signal. You define the direction based on the machine data for selecting the
initiator.
CAUTION
Risk of material damage!
Incorrect direction settings can cause serious errors in the system (for example, faulty
control of a unit of equipment).
Check the direction settings in the commissioning phase, and whenever you replace an
initiator.
Supported initiators
The FM 352 supports the following initiators:
● Initiators with 24 V signal level (proximity switches)
Limit frequency = 50 kHz
● Cable length max. 100 m
Signal evaluation
With an initiator, the positive edges of signal A* are counted.
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