Omron NXR Series User Manual page 89

From the above results, the voltage of each input power supply to each Unit is calculated as fol-
lows.
a. Voltage of each input power supply to ILM1
Voltage of each power supply = 24.0 V - Voltage drop in power supply cable 1 = 24.0 V - 0.80 V
= 23.20 V
b. Voltage of each input power supply to ILM2
Voltage of each power supply
= 24.0 V - (Voltage drop in power supply cable 1 + Voltage drop in the internal circuits of ILM1 +
Voltage drop in power supply cable 2)
= 24.0 V - (0.80V + 0.36 V + 0.60 V)
= 22.24 V
c. Voltage of each input power supply to ILM3
Voltage of each power supply
= 24.0 V - (Voltage drop in power supply cable 1 + Voltage drop in the internal circuits of ILM1 +
Voltage drop in power supply cable 2 + Voltage drop in the internal circuits of ILM2 + Voltage
drop in power supply cable 3)
= 24.0 V - (0.80 V + 0.36 V + 0.60 V + 0.18 V + 0.30 V)
= 21.76 V
The above voltage values are acceptable because they meet the voltage specifications of each
power supply.
Also, confirm that the voltage values meet the voltage specifications of the connected IO-Link devi-
ces or non-IO-Link external devices. However, this confirmation is omitted in this example.
If the voltage specifications are not met, review the length of power supply cable and the connected
external devices.
NXR-series IO-Link Master Unit for EtherCAT User's Manual (W640)
4 Designing the Power Supply System
4
4-19