Design Concepts For Power Supply To The Profinet Io Device Terminal - Omron PROFINET NX-PNC202 User Manual

Unit name
IO Power Supply Connec-
tion Unit
5-1-3 Design Concepts for Power Supply to the PROFINET IO Device
Terminal
The following must be studied when designing the power supply system to the Profinet IO Device Ter-
minal.
• The NX Unit power supply and IO power supply systems must be designed and then the design con-
ditions for both must be confirmed.
• The external power supplies (i.e., Unit power supply and IO power supplies) must be selected.
NX-series PROFINET Coupler Unit User's Manual (W623)
This NX Unit is used when there are not enough IO power supply terminals for the
connected external devices that are connected to NX Units such as Digital IO Units
and Analog IO Units.
PROFINET
NX Unit
Coupler Unit
Internal
power
supply
circuit
I/O power
supply
Unit power
supply
Example of NPN type
I/O Power Supply I/O Power Supply
Connection Unit Connection Unit
(16 IOV terminals)
(16 IOG terminals)
A1 B1 A1
IOG
IOV IOV
IOV IOV IOG
IOV IOV IOG
IOV IOV IOG
IOV IOV IOG
IOG
IOV IOV
IOV IOV IOG
IOV IOV IOG
A8 B8 A8
* Wire colors have been changed according to revisions in the JIS standards for photoelectric
and proximity sensors. The colors in parentheses are the wire colors prior to the revisions.
5 Designing the Power Supply System
Function
I/O power supply is not separated at
the I/O Power Supply Connection Units.
I/O Power Supply
Additional I/O
Connection Units
Power Supply Unit
I/O power
supply
DC Input Units
(NPN type) Two-wire sensor*
(e.g., limit switch)
B1 A1 B1
IOG 0 1
IOG 2 3
IOG 4 5
7
IOG 6
IOG 8 9
IOG 10 11
Three-wire sensor
13
IOG 12
with NPN output*
(e.g., photoelectric sensor
IOG 14 15
or proximity sensor)
B8 A8 B8
Not enough I/O power
supply terminals
Brown (White)
Blue (Black)
Black (White)
Brown (Red)
Blue (Black)
5 - 5
5