Calculating The Current Consumption Of The Io-Link Master Unit From The I/O Power Supply; Precautions For The Unit Power Supply And The I/O Power Supply - Omron NX Series User Manual

GX-type IO-Link Master Unit
Directly supply the Unit power supply and the I/O power supply from the power supply port of the IO-
Link Master Unit.
The I/O power supply is branched in the IO-Link Master Unit and supplied to the connected devices
from the ports.
Unit power
Power
supply
supply port
(24 VDC)
I/O power supply
(e.g., 24 VDC)
Note Even if the Unit power supply is not supplied, if you supply the I/O power supply, the I/O power supply is
supplied to the connected devices from the ports.
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Calculating the Current Consumption of the IO-Link Master Unit
from the I/O Power Supply
The current consumption of the IO-Link Master Unit from the I/O power supply is calculated as shown
below.
(Current consumption of the IO-Link Master Unit from the I/O power supply)
= (Current consumption of the IO-Link Master Unit itself from the I/O power supply)
+ (Total input current of ports used for inputs)
+ (Total current consumption of external connected devices)
+ (Total load current of ports used for outputs)
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Precautions for the Unit Power Supply and the I/O Power Supply

There are two IO-Link Master Unit power supply systems: the Unit power supply and the I/O power
supply.
• Supply the Unit power supply and the I/O power supply from separate sources.
Precautions for Correct Use
You must supply the Unit power supply and the I/O power supply from separate sources.
If you supply power from the same power supply, noise may cause malfunctions.
• There are no restrictions on the sequence of turning ON the power supplies for either NX-type or
GX-type IO-Link Master Units.
NX/GX-series IO-Link System User's Manual (W570)
GX-type IO-Link Master Unit
Internal
circuits
Internal
circuits
Ports
1 2 3 4 ... N
To the connected devices
2 Part Names and Wiring
2
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