4-2-4
Calculating the Voltage Drop
The calculation methods for the voltage drop in the Unit/input power or the output power supplied from
the IO-Link Master Unit are given below.
Input Voltage to a Digital I/O Hub
= (Voltage of the external power supply connected to the IO-Link Master Unit) - (Voltage drop in the
power supply cable and the IO-Link Master Unit) - (Voltage drop in the IO-Link cable)
Input Voltage to Input Devices
= (Voltage of the external power supply connected to the IO-Link Master Unit) - (Voltage drop in the
power supply cable and the IO-Link Master Unit) - (Voltage drop in the IO-Link cable)
Input Voltage to Output Devices
= (Voltage of the external power supply connected to the IO-Link Master Unit) - (Voltage drop in the
power supply cable and the IO-Link Master Unit) - (Residual voltage at the digital outputs for pin 2
of the IO-Link Master Unit) - (Voltage drop in the IO-Link cable) - (Residual voltage at the digital
output of the Digital I/O Hub)
The items of the formula are described below.
Item
Description
Voltage of the external
power supply connected
to the IO-Link Master Unit
This is a voltage of the external power supply connected to the IO-Link Master
Unit. Refer to the
NXR-series IO-Link Master Unit for EtherNet/IP User’s
Manual (Cat. No. W619)
for details.
Voltage drop in the power
supply cable and the IO-
Link Master Unit
This is a voltage drop in the power supply cable connected to the IO-Link Mas-
ter Unit and in the IO-Link Master Unit. Refer to the
NXR-series IO-Link Master
Unit for EtherNet/IP User’s Manual (Cat. No. W619)
for details.
Residual voltage at the
digital outputs for pin 2 of
the IO-Link Master Unit
This is a residual voltage at the digital outputs for pin 2 of the IO-Link Master
Unit. Refer to the
NXR-series IO-Link Master Unit for EtherNet/IP User’s
Manual (Cat. No. W619)
for details.
Voltage drop in the IO-
Link cable
This is a voltage drop in the IO-Link cable. The voltage drop in the IO-Link ca-
ble is determined by the following items:
•
Sum of the total current consumptions from Unit/input power supply and out-
put power supply
•
IO-Link cable length
Refer to
Values of Voltage Drop in the IO-Link Cable
on page 4-7 below for
voltage drop values.
Residual voltage at the
digital output of the Digital
I/O Hub
This is a residual voltage that occurs when you turn ON the digital output of the
Digital I/O Hub. Use the value of
Residual voltage
Values of Voltage Drop in the IO-Link Cable
Sum of total current consumptions from Unit/input
power supply and output power supply (A)
Voltage drop for each IO-Link cable length (V)
1 m
2 m
3 m
5 m
10 m
20 m
3
0.60
0.96
1.20
1.68
2.88
5.28
2
0.40
0.64
0.80
1.12
1.92
3.52
1
0.20
0.32
0.40
0.56
0.96
1.76
0.5
0.10
0.16
0.20
0.28
0.48
0.88
4 Designing the Power Supply System
4-7
NXR-series IO-Link I/O Hub User’s Manual (W620)
4-2
Designing the Power Supply System
4
4-2-4
Calculating the V
oltage Drop
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: ......