User`s manual

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MELSEC
5 PROCEDURE AND SETTINGS UP TO THE POINT OF OPERATION
5
5.2 Installation
This section gives precautions when handling the CC-Link board and explains the
installation environment.
5.2.1 Precautions when handling
The followings are precautions to be noted when handling the CC-Link board.
DANGER
• Do not touch the terminal or the connector while the power is turned on.
Doing so may result in electric shock or cause malfunctioning.
CAUTION
• Fasten the CC-Link board securely using the installation screws and tighten the
installation screws securely within the specified torque range.
If the screws are loose, this may cause malfunctioning.
If the screws are tightened too much, this could cause damage to the screws or
module, leading to malfunctioning.
• Do not directly touch the conductive section of the CC-Link board.
Doing so could result in malfunctioning or breakdown of the CC-Link board.
• Before handling the CC-Link board, touch a grounded metal object to discharge the
static electricity from the human body.
Failure to do so may cause failure or malfunction of the CC-Link board.
• Tighten the terminal screws within the specified torque range.
If the terminal screws are loose, this may lead to a short or malfunctioning.
If the terminal screws are tightened too much, this could cause damage to the
screws or CC-Link board, leading to a short or malfunctioning.
• Handle the CC-Link board in a location where there is no static electricity.
Static electricity could result in failure or malfunctioning.
• Take care that foreign objects such as chips or wiring debris do not get into the PC.
This could result in fire, breakdowns or malfunctioning.
• Do not dismantle or rebuild the CC-Link board.
This will result in failure, malfunctioning, injury or fire.
• Always turn off all external power before installing or removing the CC-Link board.
If power is not turned off at all phases, there is a risk of electric shock or damage to
the product.
• When discarding the product, handle it as an industrial waste.
• Do not drop the CC-Link board or subject it to strong impact.
This will result in failure or malfunctioning of the board.
(1) The tightening torque for the CC-Link board terminal screws and fixing screws
should fall within the range indicated in the table below.
Screw locations Tightening torque range
Terminal block terminal screws (M3.5 screw) 59 to 88 N⋅cm
Terminal block installation screws (M3.5 screw) 59 to 88 N⋅cm
(2) See the manual attached to the PC unit for the tightening torque of CC-Link board
installing screws.