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Operators Manual
ALS 230
Release 11/05 Page 63 Connections and signals
8.3.3 APSF sensor
For the APSF function (Automatic speed follower) a rotary encoder has to be installed. For
optimum labelling accuracy the rotary encoder should be selected so that it produces one pulse
for every 0.125 mm of product movement. The connection of the encoder should be done with
a shielded cable. For correct operation the rise and fall time of the encoder signal should be
1 µs.
+24V
GND
14
black
yellow
white
red
5
9
4
8
3
7
2
6
1
GND
Signal
Supply
Shield
12
33
27
CN33
NPN sensor
5
9
4
8
3
7
2
6
1
Figure 19 Connection of a NPN type APSF sensor
+24V
GND
14
black
yellow
white
red
12
33
27
CN33
5
9
4
8
3
7
2
6
1
5
9
4
8
3
7
2
6
1
GND
Signal
Supply
Shield
PNP sensor
Figure 20 Connection of a PNP type APSF sensor