Mitsubishi Electric MELSERVO-J3 Series Instruction Manual page 7

(5) Corrective actions
When it is assumed that a hazardous condition may take place at the occur due to a power failure or a
product fault, use a direct drive motor with an external brake mechanism for the purpose of prevention.
When any alarm has occurred, eliminate its cause, ensure safety, and deactivate the alarm before
restarting operation.
Design the machine in order to avoid sudden restarting in case of after an instantaneous power failure.
(6) Maintenance, inspection and parts replacement
With age, the electrolytic capacitor of the servo amplifier will deteriorate. To prevent a secondary accident
due to a fault, it is recommended to replace the electrolytic capacitor every 10 years when used in general
environment.
Please contact your local sales office.
(7) Storage
Note the following points when storing the direct drive motor for an extended period of time (guideline: three
or more months).
Always store the direct drive motor indoors in a clean and dry place.
If it is stored in a dusty or damp place, make adequate provision, e.g. cover the whole product.
If the insulation resistance of the winding decreases, reexamine the storage method.
Though the direct drive motor is rust-proofed before shipment using paint or rust prevention oil, rust may
be produced depending on the storage conditions or storage period.
If the direct drive motor is to be stored for longer than six months, apply rust prevention oil again especially
to the machined surfaces of the rotor, etc.
Before using the product after storage for an extended period of time, hand-turn the direct drive motor rotor
(output shaft) to confirm that nothing is wrong with the direct drive motor.
When the equipment has been stored for an extended period of time, contact your local sales office.
(8) General instruction
To illustrate details, the equipment in the diagrams of this Specifications and Instruction Manual may have
been drawn without covers and safety guards. When the equipment is operated, the covers and safety
guards must be installed as specified. Operation must be performed in accordance with this Specifications
and Instruction Manual.
CAUTION
CAUTION
CAUTION
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