Omron CS1W-ETN21 Using Contact Outputs Common to All Units, Mounting Location, Cable Location

Models: CS1W-ETN21

1 285
Download 285 pages 16.7 Kb
Page 62
Image 62

Network Installation

Section 2-4

2-4-4 Using Contact Outputs (Common to All Units)

 

Communications errors can occur when Contact Output Units are mounted to

 

the same Rack or connected to the same PLC as an Ethernet Unit due to

 

noise generated by the contact outputs. Use one or more of the following

 

measures when installing Contact Output Units and Ethernet Units on the

 

same Rack.

Mounting Location

Mount (or connect) any Contact Output Units as far away from the Ethernet

 

Unit as possible.

Contact Output Unit

Ethernet Unit

 

Transceiver/Hub

 

Contact outputs

Cable Location

Separate the transceiver cable or twisted-pair cable connecting the Ethernet

 

Unit as far from the wiring to the Contact Output Units as possible. The coax-

 

ial cable must also be placed as far away from the Contact Output Units and

 

their wiring as possible.

 

Contact outputs

Contact Output Unit

Ethernet Unit

 

 

To transceiver/hub

Hub Measures

Attach several ferrite cores designed for EMI countermeasures on the trans-

 

ceiver cable or twisted-pair cable near the hub. The transceiver must also be

 

placed as far away from the Contact Output Units and their wiring as possible.

Ethernet Unit

Ferrite core

Transceiver/Hub

Transceiver cable

37

Page 62
Image 62
Omron CS1W-ETN21 Using Contact Outputs Common to All Units, Mounting Location, Cable Location, Hub Measures