Mitsubishi Electric MELSEC SW1DNC-CCIEF-B User Manual page 5

[Wiring Precautions]
CAUTION
● 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.
● When disconnecting the cable from the board, do not pull the cable by the cable part. Pulling the cable
connected to the board may result in malfunction or damage to the board or cable.
● 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.
● Always ground the personal computer to the protective ground conductor. Failure to do so may cause
a malfunction.
[Startup and Maintenance Precautions]
WARNING
● Turn off the power for the system in all phases before cleaning the board or retightening the board-
fixing screws. Failure to do so may result in electric shock, or cause a failure or malfunction of the
board.
● Turn off the power for the system in all phases before installing the board to or removing it from the
personal computer. Failure to do so may result in electric shock or cause the board to fail or
malfunction.
● Do not connect or disconnect any communication cable while power is on. Doing so may result in a
malfunction.
[Startup and Maintenance Precautions]
CAUTION
● Thoroughly read the manual and ensure the safety before performing program modification during
operation, forced output, operation such as RUN, STOP, and PAUSE. An improper operation will
result in mechanical damage or accidents.
● Do not disassemble or modify the boards. Doing so may cause failure, malfunction, injury, or a fire.
● Fix the board by tightening the board-fixing screws within the specified torque range. Undertightening
may cause drop, short circuit, or malfunction. Overtightening may damage the screw and/or board,
resulting in drop, short circuit, or malfunction.
For the tightening torque of the board-fixing screws, refer to the manual supplied with the personal
computer.
● Before handling the board, touch a conducting object such as a grounded metal to discharge the static
electricity from the human body. Failure to do so may cause the board to fail or malfunction.
● The board is included in an antistatic envelope. When storing or transporting it, be sure to put it in the
antistatic envelope. Failure to do so may cause a failure or malfunction.
● The microprocessor built in the board will reach a high temperature during operation. Do not touch it
directly when replacing the board. Doing so may result in a failure, malfunction or injury.
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