2-9
2-8
Protective bonding
Installation and connections
2
5.
Protective bonding
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WARNING
Always ground the robot and controller unit to prevent electrical shock.
Always use the ground terminal (M4 screw) on the robot unit to make ground connection.
The ground terminal location is shown below.
Ground terminal
Ground terminal (M4 screw) for protective bonding
Ground terminal (M4 screw) for robot cable
c
CAUTION
• A secure ground connection (less than 100-ohm resistance to ground) is
recommended.
• Use electrical wire thicker than AWG14 (2mm
2
) as the ground wire.
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WARNING
Before making the ground connection, make sure that the controller is not
connected to the robot or the power to the controller is off.
Provide a terminal marked "PE" as the protective conductor for the entire system, and
connect it to an external protective conductor. Also securely connect the ground terminal
on the robot frame to the protective conductor.
(Symbol 417-IEC5019)