Omron NB3Q-TW00B Setup Manual page 59

2 Installing the NB Unit and Connecting Peripheral Devices
Precautions on Laying Twisted-pair Cable
Basic Precautions
• Press the cable connector in firmly until it locks into place at both the hub and the PLC.
• After laying the twisted-pair cable, check the connection with a 10Base-T cable tester.
Environment Precautions
• The UTP cable is not shielded, and the hub is designed for use in OA environments. In
environments subject to noise, construct a system with shielded twisted-pair (STP) cable and
hubs suitable for an FA environment.
• Do not lay the twisted-pair cable together with high-voltage lines.
• Do not lay the twisted-pair cable near devices that generate noise.
• Do not lay the twisted-pair cable in locations subject to high temperature or high humidity.
• Do not lay the twisted-pair cable in locations subject to excessive dirt and dust or to oil mist or
other contaminants.
Hub Installation Environment Precautions
• Do not install the hub near devices that generate noise.
• Do not install the hub in locations subject to high temperature or high humidity.
• Do not install the hub in locations subject to excessive dirt and dust or to oil mist or other
contaminants.
Connecting the Cable
Note 1 Turn OFF the PLC's power supply before connection or disconnecting twisted-pair cable.
2 Allow enough space for the bending radius of the twisted-pair cable.
1
Lay the twisted-pair cable.
2
Connect the cable to the hub. Be sure to press in the cable until it locks into place.
Request cable installation from a qualified professional.
3
Connect the cable to the connector on the PLC. Be sure to press in the cable until it locks into
place.
2-28 NB-series Programmable Terminals Setup Manual(V107)
WWW.NNC.IR