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Mitsubishi Electric MR-J3-B Instruction Manual page 6

Melservo-j3 series servo amplifier
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(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 servo motor with electromagnetic brake or an external brake mechanism for the
purpose of prevention.
Configure the electromagnetic brake circuit so that it is activated not only by the servo amplifier signals
but also by an external forced stop (EM1).
When any alarm has occurred, eliminate its cause, ensure safety, and deactivate the alarm before
restarting operation.
When power is restored after an instantaneous power failure, keep away from the machine because the
machine may be restarted suddenly (design the machine so that it is secured against hazard if restarted).
(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 consult our sales representative.
(7) 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
Contacts must be open when
servo-off, when an trouble (ALM)
and when an electromagnetic brake
interlock (MBR).
Servo motor
Electromagnetic brake
CAUTION
Circuit must be
opened during
forced stop (EM1).
RA
EM1
24VDC
A - 5
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