Rockwell Automation Allen-Bradley FLEX 5000 - Page 11

Rockwell Automation Publication 5094-IN009C-EN-P - May 2022 11
FLEX 5000 High-speed Counter I/O Modules Installation Instructions
Figure 3 shows a wiring diagram for the 5094-HSC and 5094-HSCXT modules connected to a discrete input device. The 5094-HSC and the 5094-HSCXT modules must be used with
the 5094-STB shield bar accessory.
Figure 3 - 5094-HSC and 5094-HSCXT Wiring Diagram - Discrete Input Device
IMPORTANT We recommend that you use twisted pair, individually shielded cable with a maximum length of 300 m (1000 ft) when connecting asingle-ended
encoder. For more information on the cable type to use, see the encoder documentation.
IMPORTANT External resistors, as indicated in the R location, are required if they are not internal to the encoder. The pull-up resistor (R) value depends on the power
supply value. The following table shows the maximum resistor values for typical supply voltages. To calculate the maximum resistor value, use the
following formula:
Power Supply Voltage (V DC)
Pull-up Resistor Value (R), Max
(1)
(1) Resistance values can change, depending on your application. The minimum resistor (R)
value depends on the current sinking capability of the encoder.
5 500 Ω
12 2250 Ω
24 5250 Ω
Proximity sensor Photoelectric sensor with open
collector sinking output
VS
COM
OUT
+V DC
Power
supply
COM
Input A0+ Input A0- Input B0+ Input B0- Input Z0+ Input Z0- Input A1+ Input A1- Input B1+ Input B1- Input Z1+ Input Z1- Output 0 Output 1 Output 2 Output 3
A0+ A0- B0+ B0- Z0+ Z0- A1+ A1- B1+ B1- Z1+ Z1- O0
3 mm
O1 O2 O3
Common
Voltage
Shield bar
Power
supply
+V DC COM
R
VS
COM
OUT
TB3 Terminal Base with 5094-STB shield bar accessory
Shield bar accessory
VDC - Vmin
Imin
R =
Where:
R = Maximum pull-up resistor value
VDC = Power supply voltage
Vmin = 3.0V DC
Imin = 4.0 mA