A - 7
(4) Usage
CAUTION
Configure an external emergency stop circuit in order to stop the operation immediately and shut off the
power.
Do not disassemble or repair the equipment.
If an alarm is reset while the operation signal is input to the driver, the equipment starts suddenly. Be sure
that the operation signal is off before resetting the alarm to prevent an accident.
Do not modify the equipment.
Electromagnetic interference from the driver may affect the surrounding electronic equipment. Minimize
the influence of the electromagnetic interference by using a noise filter, etc.
Toxic gases may be generated by burning or disassembling the driver. Do not burn or disassemble the
driver.
Use the driver with the specified servo motor.
The lock on the servo motor is designed to hold the motor shaft and should not be used for ordinary
braking.
For such reasons as service life and mechanical structure (e.g. where a ball screw and the servo motor
are coupled via a timing belt), the lock may not hold the motor shaft. To ensure safety, install a stopper on
the machine side.
(5) Corrective actions
CAUTION
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 a lock or provide an external lock mechanism for the purpose of
prevention.
Do not use the 24VDC interface and control circuit power supplies for the lock. Always use the power
supply designed exclusively for the lock. Otherwise, a fault may occur.
Configure the lock operation circuit which interlocks with an external emergency stop.
Servo motor
Electromagnetic brake
B
RA
Contacts must be opened
with the EMG stop switch.
Contacts must be opened when ALM
(Malfunction) or MBR (Electromagnetic
brake interlock) turns off.
24 V DC
When an alarm occurs, remove its cause. Then, ensure safety and reset 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.)
Lock