Mitsubishi Electric Melservo-J4 MR-J4-DU*B4-RJ100 Series, Instruction Manual

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7
[Corrective actions]
[Maintenance, inspection and parts replacement]
[General instruction]
CAUTION
●
Ensure safety by confirming the power off, etc. before performing corrective actions. Otherwise, it may
cause an accident.
●
If it is assumed that a power failure, machine stoppage, or product malfunction may result in a
hazardous situation, use a servo motor with an electromagnetic brake or provide an external brake
system for holding purpose to prevent such hazard.
●
Configure an electromagnetic brake circuit which is interlocked with an external emergency stop
switch.
●
When an alarm occurs, eliminate its cause, ensure safety, and deactivate the alarm to restart
operation.
●
If the molded-case circuit breaker or fuse is activated, be sure to remove the cause and secure safety
before switching the power on. If necessary, replace the converter unit and drive unit, and recheck the
wiring. Otherwise, it may cause smoke, fire, or an electric shock.
● Provide an adequate protection to prevent unexpected restart after an instantaneous power failure.
●
To prevent an electric shock, injury, or fire from occurring after an earthquake or other natural
disasters, ensure safety by checking conditions, such as the installation, mounting, wiring, and
equipment before switching the power on.
CAUTION
●
Make sure that the emergency stop circuit operates properly such that an operation can be stopped
immediately and a power is shut off by the emergency stop switch.
●
It is recommended that the converter unit and the drive unit be replaced every 10 years when it is
used in general environment.
●
When using a converter unit or a drive unit whose power has not been turned on for a long time,
contact your local sales office.
●
To illustrate details, the equipment in the diagrams of this 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 Instruction
Manual.
Servo motor
Electromagnetic brake
B
U
RA
Contacts must be opened with
the emergency stop switch.
Contacts must be opened when ALM
(Malfunction) or MBR (Electromagnetic
brake interlock) turns off.
24 V DC