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(4) Usage CAUTION
Provide a forced stop circuit to ens ure that operation can be stopped and power switched off immediately.
Any person who is involved in dis assembly and repair should be full y competent to do the work.
Before resetting an alarm, make sure that the run signal of the servo amplifier is off to prevent an
accident. A sudden restart is made if an alarm is reset with the run signal on.
Do not modify the equipment.
Use a noise filter, etc. to minimize the influence of elec trom ag netic int erf erenc e, wh ich m a y be ca use d b y
electronic equipment used near the s ervo amplifier.
Use the servo amplifier with the spec ified servo motor.
The electromagnetic brake on the servo motor is designed to hold the motor shaft and s hould not be used
for ordinary braking.
For such reasons as service life a nd mechanica l structure (e.g. where a ballsc rew and t he servo m otor
are coupled via a timing belt), the electromagn etic br ake m ay not hold t he mot or shaf t. To e nsure s afet y,
install a stopper on the machine side.
(5) Corrective actions CAUTION
When it is assumed that a hazardous c ondition m ay take plac e at the occur due to a po wer failure or a
product fault, use a servo motor with electr omagnetic brake or an external br ake mechanism for the
purpose of prevention.
Configure the electromagnetic brake circuit so that it is acti vated n ot onl y b y the int erface unit signals but
also by a forced stop (EM1).
EM1RA
24VDC
Contacts must be open when
servo-off, when an alarm occurrence
and when an electromagnetic brake
interlock (MBR).
Electroma
g
netic brake
Servo motor
Circuit must be
opened during
forced stop (EM1).
When any alarm has occurred, eliminate its c ause, ensure safety, and deactivate the alar m before
restarting operation.
When power is restored after an instantaneous po wer failur e, keep aw ay from the m achine b ecause the
machine may be restarted suddenl y (design the machine so that it is sec ured against hazard if restarted).