Precautions for safety
 
Please read this manual and auxiliary documents before starting installation, operation, 
maintenance or inspection to ensure correct usage. Thoroughly understand the device, safety 
information and precautions before starting operation.   
The safety precautions in this instruction manual are ranked as "WARNING" and "CAUTION". 
 
 
DANGER 
When there is a potential risk of fatal or serious injuries if 
handling is mistaken. 
 
 
 
 
WARNING  
When operator could be fatally or seriously injured if handling 
is mistaken. 
   
 
 
 
CAUTION  
When a dangerous situation may occur if handling is mistaken 
leading to medium or minor injuries, or physical damage.
 
Note that some items described as 
   CAUTION
  may lead to major results depending on 
the situation.    In any case, important information that must be observed is described. 
 
 
The numeric control unit is configured of the control unit, operation board, servo drive unit, 
spindle drive unit, power supply unit, servomotor and spindle motor, etc. 
 
In this manual, the following items are generically called the "servomotor". 
• Servomotor 
• Spindle motor 
In this manual, the following items are generically called the "servo drive unit".   
• Servo drive unit 
• Spindle drive unit 
• Power supply unit