NAiS FP Series Hardware Manual page 130

FP0 Hardware
LED-equipped
limit switch
Internal circuit
r: Internal resistor of limit switch (kW)
R: Bleeder resistor (kW)
The OFF voltage of the FP0 input is 2.4V, therefore when the power supply voltage is 24V, select R so
that the current will be greater than I =
The resistance R of the bleeder resistor is: R ≤
The wattage W of the resistor is: W =
In the actual selection, use a value that is 3 to 5 times the value of W.
Matsushita Electric Works (Europe) AG
Input
terminal
Bleeder
resistor
COM
24 - 2.4
r
13.44
5.6 × I – 2.4
2
(Power supply voltage)
R
9.4
FP0
(kΩ)
Input Wiring
9-9