Wiring
FP0
7
−
10
7.4
Input Wiring
7.4.2
LED-Equipped Reed Switch
When a LED is connected to an input contact such as LED-equipped reed switch, make
sure that the ON voltage applied to the FP0 input circuit is greater than 19.2 V DC.
In particular, take care when connecting a number of switches in series.
FP0
19.2 V DC
or more
24 V DC
LED-equipped
reed switch
COM
Input
terminal
7.4.3
Two-Wire Type Sensor
If the input of the FP0 does not turn OFF because of leakage current from the two-wire
type sensor, the use of a bleeder resistor is recommended, as shown below.
The OFF voltage of the FP0 input is 2.4 V, therefore, select an R value so that the voltage
between the COM terminal and the input terminal will be less than 2.4 V.
(The impedance of the FP0 input terminal is 5.6 k
Ω
.)
The resistance R of the bleeder resistor is: R < or =
The wattage W of the resistor is:
In the actual selection, use a value that is 3 to 5 times the value of W.
13.44
(Power supply voltage)
2
R
(k
Ω
)
Two-wire
type sensor
FP0
5.6
×
I
−
2.4
W
=
COM
Input terminal
Internal
circuit
Bleeder
resistor
I
: Sensor’s leakage current (mA)
R: Bleeder resistor (k
Ω
)
Содержание FP0 Series
Страница 14: ...Table of Contents FP0 xii ...
Страница 16: ...Overview FP0 1 2 ...
Страница 82: ...S LINK Control Unit FP0 4 2 ...
Страница 95: ...Chapter 5 I O Allocation 5 1 I O Number 5 3 5 2 Control Unit 5 4 5 3 Expansion I O Unit 5 5 ...
Страница 96: ...I O Allocation FP0 5 2 ...
Страница 100: ...I O Allocation FP0 5 6 5 3 Expansion I O Unit ...
Страница 102: ...Installation FP0 6 2 ...
Страница 112: ...Installation FP0 6 12 6 5 Installation Using FP0 Flat Type Mounting Plate ...
Страница 114: ...Wiring FP0 7 2 ...
Страница 198: ...High speed Counter Pulse Output PWM Output FP0 9 34 9 5 PWM Output Function ...
Страница 200: ...General use Serial Communications FP0 10 2 ...
Страница 210: ...Self Diagnostic and Troubleshooting FP0 11 2 ...
Страница 220: ...Specifications FP0 12 2 ...
Страница 234: ...Dimensions FP0 13 2 ...
Страница 241: ...Dimensions FP0 13 9 13 6 Detailed Specifications of Cables 13 6 Detailed Specifications of Cables ...
Страница 243: ...Chapter 14 Appendix ...
Страница 380: ...14 138 14 7 ASCII Codes ...