User manual - RATEMETER STI-N118
a)
b)
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).
a)
b)
Figure 4.14. An example of sensor connection:
a) with common earth, b) with common plus
15
!
N
6 5
6 5
L
L
N
!
12 11
9 8 7
n
.c
.
n
.c
.
n
.c
.
pulse
input
Uo
C
O
M
+
-
PNP type
sensor
-
+
-
10
13
12 11
9 8 7
n
.c
.
n
.c
.
n
.c
.
pulse
input
Uo
C
O
M
+
+
-
-
10
13
NPN type
sensor
