Connecting the inputs
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MN05013005E
57
Increasing the input current
The following input circuit can be used in order to prevent
interference and also when using two-wire proximity switches:
Figure 37: Increasing the input current
A resistor can be connected in series with the circuit shown in
order to restrict the inrush current.
Figure 38: Limitation of the inrush current with a resistor
L1
N
R10
R9
R8
R7
R6
R5
R4
R3
R2
R1
E+ E–
R11 R12
N
N
L
115/230 V
h
F1
100 nF/275 V
h
J
When using a 100 nF capacitor, the drop-out time of the
input increases by 80 (66.6) ms at 50 (60) Hz.
L1
N
R10
R9
R8
R7
R6
R5
R4
R3
R2
R1
E+ E–
R11 R12
N
N
L
115/230 V
h
F1
100 nF/275 V
h
1 k
O