Mitsubishi Electric MELSERVO-J3 Series Instruction Manual page 3

1. To prevent electric shock, note the following
Before wiring or inspection, 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, always confirm from the front of the servo amplifier,
whether the charge lamp is off or not.
Connect the servo amplifier and servo motor to ground.
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, you
may get an electric shock.
Operate the switches with dry hand to prevent an electric shock.
The cables should not be damaged, stressed, loaded, or pinched. Otherwise, you may get an electric
shock.
During power-on or operation, do not open the front cover of the servo amplifier. You may get 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 or periodic inspection, do not remove the front cover even of the servo amplifier 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
amplifier to the protective earth (PE) of the control box.
When using an earth-leakage current breaker (RCD), select type B.
To avoid an electric shock, insulate the connections of the power supply terminals.
2. To prevent fire, note the following
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 power supply (L
the servo amplifier, and configure the wiring to be able to shut 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.
When a regenerative resistor is used, use an alarm signal to switch main power off. Otherwise, a
regenerative transistor fault or the like may overheat the regenerative resistor, causing smoke or a fire.
In order to configure a circuit that shuts down the power supply on the side of the servo amplifier's power
supply, always connect one molded-case circuit breaker or fuse per one servo amplifier between the
power supply and the main circuit power supply (L
circuit breaker or fuse is not connected, continuous flow of a large current may cause smoke or a fire
when the servo amplifier malfunctions.
Provide adequate protection to prevent screws and other conductive matter, oil and other combustible
matter from entering the servo amplifier and servo motor.
WARNING
CAUTION
, L , and L ) of a servo amplifier. If a molded-case
1 2 3
A - 2
) of the servo
, L , and L ) of
1 2 3