Omron NXR Series User Manual page 86

4 Designing the Power Supply System
 Configuration Example
Iui1 + Iui2 + Iui3
Unit/input power supply
Output power supply
Iui1: Total current consumption of ILM1 from Unit/input power supply
Iui2: Total current consumption of ILM2 from Unit/input power supply
Iui3: Total current consumption of ILM3 from Unit/input power supply
Io1: Total current consumption of ILM1 from output power supply
Io2: Total current consumption of ILM2 from output power supply
Io3: Total current consumption of ILM3 from output power supply
 Application Conditions for Connected External Devices
The conditions are the same as those in Calculation Example for the Total Current Consumption in
Direct Power Supply on page 4-9.
 Calculating the Total Current Consumption
The total current consumption of each Unit is calculated as follows, according to Calculation Exam-
ple for the Total Current Consumption in Direct Power Supply on page 4-9.
a. Sum of the total current consumption of ILM1
(Total current consumption of ILM1 from Unit/input power supply) + (Total current consumption
of ILM1 from output power supply)
= (Iui1) + (Io1)
= (60 mA + 103.0 mA + 36.3 mA) + (100 mA + 2 A + 1 A)
≈ 3.30 A
b. Sum of the total current consumption of ILM2
(Total current consumption of ILM2 from Unit/input power supply) + (Total current consumption
of ILM2 from output power supply)
= (Iui2) + (Io2)
= (60 mA + 69.3 mA) + (100 mA + 2 A)
≈ 2.23 A
c. Sum of the total current consumption of ILM3
The formula is the same as that of ILM2.
(Total current consumption of ILM3 from Unit/input power supply) + (Total current consumption
of ILM3 from output power supply)
4-16
ILM1 ILM2
Io1
Io2
Iui1 Iui2 Iui3
Iui2 + Iui3
Io2 + Io3
Io1 + Io2 + Io3
ILM3
Io3
NXR-series IO-Link Master Unit for EtherCAT User's Manual (W640)