Mitsubishi Electric MR-D30 Instruction Manual page 7

(5) Corrective actions
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 servo amplifier 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.
After an earthquake or other natural disasters, ensure safety by checking the conditions of the
installation, mounting, wiring, and equipment before switching the power on to prevent an electric shock,
injury, or fire.
(6) Maintenance, inspection and parts replacement
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 servo amplifier be replaced every 10 years when it is used in general
environment.
When using a servo amplifier whose power has not been turned on for a long time, contact your local
sales office.
Do not touch the lead sections such as ICs or the connector contacts.
Do not place the unit on metal that may cause a power leakage or wood, plastic or vinyl that may cause
static electricity buildup.
The parameters of MR-D30 are protected by passwords to prevent incorrect settings. The parameters of
MR-D30 which are returned for fixing/investigation will be initialized. The parameters and other settings
need to be set again.
CAUTION
Use ALM (Malfunction) or SBCS
(SBC output) to open the contacts.
Servo motor
B
Electromagnetic brake
CAUTION
Contacts must be opened with
the emergency stop switch.
RA
24 V DC
A - 6