Single-ended wiring (discrete devices) -10, Single-ended wiring (discrete devices) – Rockwell Automation 1746-HSCE2 Multi-Channel High Speed Counter Module User Manual
Page 50
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Publication 1746-UM002B-EN-P - August 2004
3-10 Installation and Wiring
Single-Ended Wiring (Discrete Devices)
Figure 3.9 Discrete Device Wiring
(1) Calculate the value of the pull-up resistor (R), as shown below:
For 5V dc jumper position:
For 24V dc jumper position:
where:R = pull-up resistor value
Vcc = power supply voltage
Vmin = 4.2 V dc
Imin = 6.3 mA
Power Supply Voltage (Vcc)
Pull-up Resistor Value (R)
5V dc
127
Ω
12V dc
238
Ω
24V dc
2140
Ω
VS
A1(+)
A1(–)
B1(+)
B1(–)
Z1(+)
Z1(–)
+VDC
COM
VS
OUT
COM
OUT
COM
VS
OUT
COM
R
(1)
Power
Supply
Module Inputs
Solid-State
Switch
Proximity Sensor
Photo-electric Sensor
with Open Collector
Sinking Output
R
Vcc
Vmin
–
(
)
Imin
--------------------------------------
=
R
Vcc
Vmin
–
(
)
Imin
--------------------------------------
1K
Ω
–
=
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