A - 8 
 
(6) Usage methods 
CAUTION
 
 Immediately turn OFF the power if smoke, abnormal sounds or odors are emitted from the Motion 
controller, servo amplifier or servomotor. 
 Always execute a test operation before starting actual operations after the program or parameters 
have been changed or after maintenance and inspection. 
 Do not attempt to disassemble and repair the units excluding a qualified technician whom our 
company recognized. 
 Do not make any modifications to the unit. 
 Keep the effect or electromagnetic obstacles to a minimum by installing a noise filter or by using 
wire shields, etc. Electromagnetic obstacles may affect the electronic devices used near the 
Motion controller or servo amplifier. 
 When using the CE Mark-compliant equipment, refer to this manual for the Motion controllers and 
refer to the corresponding EMC guideline information for the servo amplifiers, inverters and other 
equipment. 
 Use the units with the following conditions. 
  Item  Conditions   
  Input power  According to each instruction manual.   
  Input frequency  According to each instruction manual.   
  Tolerable momentary power failure  According to each instruction manual.   
 
 
(7) Corrective actions for errors 
CAUTION
 
 If an error occurs in the self diagnosis of the Motion controller or servo amplifier, confirm the 
check details according to the instruction manual, and restore the operation. 
 If a dangerous state is predicted in case of a power failure or product failure, use a servomotor 
with electromagnetic brakes or install a brake mechanism externally. 
 Use a double circuit construction so that the electromagnetic brake operation circuit can be 
operated by emergency stop signals set externally. 
 
24VDC
B
RA1
EMG
Servo motor
Electromagnetic
brakes
Shut off with the
emergency stop
signal (EMG).
Shut off with servo ON signal OFF,
alarm, electromagnetic brake signal.
 
 
 If an error occurs, remove the cause, secure the safety and then resume operation after alarm 
release. 
 The unit may suddenly resume operation after a power failure is restored, so do not go near the 
machine. (Design the machine so that personal safety can be ensured even if the machine 
restarts suddenly.)