Omron NX-EC0112, User Manual

Page: 87 / 468

4 - 9
4 Installation and Wiring
NX-series Position Interface Units User’s Manual (W524)
4-2
Con
n
ect
ing
the
P
o
wer
Su
pp
ly and
Gr
o
u
n
d
Wires
4
4-
2-2 Pow
er Supply
Methods and Wir
ing
The following examples show the wiring for these power supplies.
Precautions for Correct Use
Always use separate power supplies for the Unit power supply and the I/O power supply. If you
supply power from the same power supply, noise may cause malfunctions.
Additional Information
Refer to the NX-series EtherCAT Coupler Unit User’s Manual (Cat. No. W519) for information
on the power supply system design for Slave Terminals.
Example: Incremental Encoder Input Unit
A1
Z1
IOV
IOG
A2
Z2
B1
NC
IOV
IOG
B2
NC
IOV
IOV
IOV
IOV
IOG
IOG
IOG
IOG
A1 B1
B8 A8
A1 B1
A8 B8
I/O power
supply
(24 VDC)
Additional I/O
Power Supply Unit
Incremental Encoder
Input Unit
Encoder 1
Encoder 2
To next Unit
Communications
Coupler Unit
NX Unit
Additional I/O
Power Supply Unit
Unit power supply
terminals
Internal power
supply circuit
NX Unit power supply
NX Unit power supply
I/O power
supply
Unit power
supply
(24 VDC)
I/O power supply
terminals
Connected
to external
devices.
External
output
device
External
output
device
Connected
to external
devices.
I/O power supply (from external source)
I/O power
supply
Connected
to external
devices.
End Cover