Omron NXR Series User Manual page 105

For the power supply with through-wiring, the power supply connector (output) of each IO-Link Master
Unit is used. However, the power supply connector (output) of the last Unit to supply power is not
used.
Refer to 4-1-2 Power Supply System on page 4-2 for details on the power supply method.
Precautions for Safe Use
The maximum power supply current is 9 A, which is the sum of the Unit/input power supply cur-
rent and the output power supply current. Do not use the Unit beyond the maximum power sup-
ply current. Otherwise, an excess current flows through the power supply cable, and it may
cause fire.
Precautions for Correct Use
Always use separate power supplies for the Unit/input power supply and the output power sup-
ply. If you supply power from the same power supply, load variations in output devices may
cause malfunctions.
The following describes the power supply cable connection procedure, tightening torque, and water-
proof covers.
Connection Procedure
Use the following procedures to connect a power supply cable. Turn OFF the Unit/input power supply
and output power supply before you connect a power supply cable.
1
Push the 7/8 inch connector (female) of the power supply cable into the power supply connec-
tor (input) (male) of the IO-Link Master Unit. At this time, be careful of the orientation of the
power supply connector.
2
Rotate the 7/8 inch screw connector of the power supply cable in the direction shown in the
following figure to tighten it. Tighten the connector before tightening it to the specified torque.
NXR-series IO-Link Master Unit for EtherCAT User's Manual (W640)
5 Installation and Wiring
5-13
5