Mitsubishi Electric MELSERVO-JN Series Instruction Manual page 3

1. To prevent electric shock, note the following
Before wiring, be sure to turn off the power, wait for 15 minutes or longer, and then make sure that the
charge lamp is off to prevent an electric shock. In addition, always confirm if the charge lamp is off or not
from the front of the servo amplifier.
Ground the servo amplifier and the servo motor securely.
Only qualified personnel should attempt wiring and inspection.
Wire the servo amplifier and the servo motor after installation is complete to prevent an electric shock.
Do not operate the switches with wet hands as it may cause an electric shock.
Do not damage, stress excessively, place heavy objects or pinch the cable to prevent an electric shock.
To prevent an electric shock, always connect the protective earth (PE) terminal (terminal marked
the servo amplifier with the protective earth (PE) of the control box.
When using an earth-leakage current breaker (RCD), select the 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, the servo motor and the regenerative option on incombustible material. Installing
them directly or close to combustibles may cause a fire.
Be sure to connect a magnetic contactor between the power supply and the main circuit power supply
(L1/L2) of the servo amplifier, in order to configure a circuit that shuts off the power supply by the magnetic
contactor. If a magnetic contactor is not connected, a continuous flow of a large current may cause a fire
when the servo amplifier malfunctions.
When using a regenerative resistor, configure a circuit that shuts off the power if abnormality is found.
Otherwise, the regenerative resistor may overheat, causing a fire due to a regenerative transistor fault.
When using a regenerative option, remove the built-in regenerative resistor and its wiring from the servo
amplifier.
Provide an adequate protection to prevent conductive matters such as screws or metal pieces or
combustible matters such as oil from entering the servo amplifier and the servo motor.
Always connect a molded-case circuit breaker to the power supply of the servo amplifier.
3. To prevent injury, note the following
Do not apply voltage other than specified in this Instruction Manual to each terminal as it may cause burst,
damage, etc.
Connect the wires to correct terminals to prevent burst, damage, etc.
Ensure that polarity ( ,
The servo amplifier heat sink, the regenerative option, the servo motor can be very hot during power-on
and for some time after power-off, and it may result burns or damages to parts (cables, etc.) Take
measures, e.g. provide covers, to prevent accidental contact of hands and parts with them.
Never touch the rotating parts of the servo motor during operation as it may cause injury.
WARNING
CAUTION
CAUTION
) is correct. Otherwise, a burst, damage, etc. may occur.
A - 2
) of