Design the system so that the voltage specifications of the IO-Link I/O Hub and connected external
devices are met even if the voltage of the Unit/input power supply and output power supply drops.
The following shows an example of calculation. Follow the procedure described in this example to
calculate voltage drop.
Calculation Example for Voltage Drop
The following example explains how to calculate voltage drop under the following conditions.
Configuration Example
IO-Link Master Unit
Unit/input
power supply
(26.4 VDC)
Output power
supply
(26.4 VDC)
Power supply
connector (input)
(PWR IN)
I/O connectors
(P1 to P8)
Power supply
connector (output)
(PWR OUT)
Power supply
cable
Internal
circuits
Digital I/O Variable Hub
Internal
circuits
IO-Link
cable
I/O connectors
(P1 to P8)
IO-Link
connector
Conditions
Item
Conditions
Application conditions for connected
external devices
Use the conditions specified in
Calculation Example for the Total
4-2-3 Calculating the Total Cur-
The conditions lead to the total current consumption from Unit/input
power supply and the total current consumption from output power
supply below:
•
Total current consumption from Unit/input power supply: 0.38 A
•
Total current consumption from output power supply: 1.84 A
This gives 2.22 A as the sum of total current consumptions from
Unit/input power supply and output power supply.
Voltage of the external power supply
connected to the IO-Link Master Unit
•
Unit/input power supply: 26.4 VDC
•
Output power supply: 26.4 VDC
Voltage drop in the power supply ca-
ble and the IO-Link Master Unit
Calculate while assuming that the sum of voltage drops in the power
supply cable and the IO-Link Master Unit is 0.51 V.
Residual voltage at the digital out-
puts for pin 2 of the IO-Link Master
Unit
1.5 V
IO-Link cable length
1 m
4 Designing the Power Supply System
4-8
NXR-series IO-Link I/O Hub User’s Manual (W620)
Summary of Contents for NXR Series
Page 6: ...Manual Structure 4 NXR series IO Link I O Hub User s Manual W620 ...
Page 26: ...Revision History 24 NXR series IO Link I O Hub User s Manual W620 ...
Page 34: ...1 Features and System Configuration 1 8 NXR series IO Link I O Hub User s Manual W620 ...
Page 90: ...6 Process Data and Service Data 6 12 NXR series IO Link I O Hub User s Manual W620 ...
Page 108: ...7 Functions of IO Link I O Hubs 7 18 NXR series IO Link I O Hub User s Manual W620 ...
Page 131: ...I Index I 1 NXR series IO Link I O Hub User s Manual W620 I ...
Page 133: ......