Wiring; Wiring Precautions - Mitsubishi Electric MELSEC SW1DNC-CCIEF-B User Manual

4.6

Wiring

This section explains the cable wiring and precautions. For Ethernet cables and hubs used for the wiring, and network
configuration, refer to the system configuration. (Page 20 SYSTEM CONFIGURATION)

Wiring Precautions

The following explains wiring precautions.
Precautions for turning on
• Turn off the power for the system in all phases before installing the board or starting wiring. Failure to do so may result in
electric shock, damage to the product, or malfunction.
• After installation of the board and wiring, attach the cover on the module before turning it on for operation. Failure to do so
may result in electric shock.
Precautions for laying Ethernet cables
• Place the communication cable connected to the board in a duct or clamp them. If not, dangling cables may swing or
inadvertently be pulled, resulting in damage to the board or cables or malfunctions due to poor contact.
• Prevent foreign matter such as dust or wire chips from entering the personal computer. Such foreign matter may cause a
fire, failure, or malfunction.
• Do not install the communication cables together with the main circuit lines or power cables. Keep a distance of 100mm or
more between them. Failure to do so may result in malfunction due to noise.
• Securely plug the communication cable to the connector of the board. Then, check for any incomplete connection. Poor
contact may cause an erroneous input or output.
• Do not touch the core of the cable-side or board-side connector, and protect it from dirt or dust. If oil from your hand, dirt or
dust is attached to the core, it can increase transmission loss, arising a problem in data link.
• Attach a connector cover to a connector which is not connected to an Ethernet cable to prevent foreign matter such as dirt
or dust.
Precautions for Ethernet cable
• Check the following:
(1) Is any Ethernet cable disconnected?
(2) Does any Ethernet cable short?
(3) Are the connectors securely connected?
• Do not use Ethernet cables with broken latches. Doing so may cause the cable to unplug or malfunction.
• The maximum station-to-station distance is 100m. However, the distance may be shorter depending on the operating
environment of the cable. For details, contact your cable manufacturer.
• The bend radius of the Ethernet cable is limited. For details, see the specifications of the Ethernet cable to be used.
4 PROCEDURE BEFORE OPERATION
50
4.6 Wiring