Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 4

[To prevent electric shock, note the following]
WARNING
● Before wiring and inspections, turn off the power and wait for 15 minutes or more until the charge
lamp turns off. Then, confirm that the voltage between P+ and N- is safe with a voltage tester and
others. Otherwise, an electric shock may occur. In addition, when confirming whether the charge lamp
is off or not, always confirm it from the front of the servo amplifier.
● Ground the servo amplifier and servo motor securely.
● Any person who is involved in wiring and inspection should be fully competent to do the work.
● Do not attempt to wire the servo amplifier and servo motor until they have been installed. Otherwise, it
may cause an electric shock.
● Do not operate switches with wet hands. Otherwise, it may cause an electric shock.
● The cables should not be damaged, stressed, loaded, or pinched. Otherwise, it may cause an electric
shock.
● During power-on or operation, do not open the front cover of the servo amplifier. Otherwise, it may
cause an electric shock.
● Do not operate the servo amplifier with the front cover removed. High-voltage terminals and charging
area are exposed and you may get an electric shock.
● Except for wiring and periodic inspection, do not remove the front cover of the servo amplifier even if
the power is off. The servo amplifier is charged and you may get an electric shock.
● To prevent an electric shock, always connect the protective earth (PE) terminal (marked
servo amplifier to the protective earth (PE) of the cabinet.
● To avoid an electric shock, insulate the connections of the power supply terminals.
[To prevent fire, note the following]
CAUTION
● Install the servo amplifier, servo motor, and regenerative resistor on incombustible material. Installing
them directly or close to combustibles will lead to smoke or a fire.
● Always connect a magnetic contactor between the power supply and the main circuit power supply
(L1/L2/L3) of the servo amplifier, in order to configure a circuit that shuts down the power supply on
the side of the servo amplifier's power supply. If a magnetic contactor is not connected, continuous
flow of a large current may cause smoke or a fire when the servo amplifier malfunctions.
● Always connect a molded-case circuit breaker, or a fuse to each servo amplifier between the power
supply and the main circuit power supply (L1/L2/L3) of the servo amplifier, in order to configure a
circuit that shuts down the power supply on the side of the servo amplifier's power supply. If a molded-
case circuit breaker or fuse is not connected, continuous flow of a large current may cause smoke or
a fire when the servo amplifier malfunctions.
● When using the regenerative resistor, switch power off with the alarm signal. Otherwise, a
regenerative transistor malfunction or the like may overheat the regenerative resistor, causing smoke
or a fire.
● Provide adequate protection to prevent screws and other conductive matter, oil and other combustible
matter from entering the servo amplifier and servo motor.
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