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User manual - RATEMETER STI-N118
a)
b)
L
L
6 5
!
6 5
!
N
N
Figure 4.13. Examples of suppression circuit connection:
a) to relay terminals; b) to the inductive load
Construction of pulse input allows connecting of inductive or optical sensor with common
earth (Figure 4.14a) or common plus (Figure 4.14b), without additional intermediary circuits
(sensor with NPN or PNP type output).
b)
Uo
+
pulse
input
+
+
-
-
PNP type
sensor
Uo
-
NPN type
sensor
n.c.
13 12 11 10 9 8 7
COM
n.c.
n.c.
n.c.
COM
13 12 11 10 9 8 7
+
n.c.
-
n.c.
a)
pulse
input
-
Figure 4.14. An example of sensor connection:
a) with common earth, b) with common plus
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