5-150
 
5-6-13 Full Closed Loop Position Control Function 
The full-closed loop refers to the system which detects the mechanical position of controlled 
target by externally connected encoder and feedback it to the servo unit. If the user wishes to use 
external encoder or optical ruler as the feedback signal, it is possible to achieve the connection to 
control board CN8 interface; support phase A/B/Z signal (optical ruler or encoder),maximum 
supported encoder resolution is 1000000 pulse/rev (pulse number of up to 4x frequency corresponded 
by the full-closed loop when the motor rotates one cycle). 
 
Servo motor
Optical ruler
Motor encoder cable
Servo motor 
power cable
External encoder cable 
JSSFCLxxx
Optical ruler reader
CN8
CN2
 
 
 Parameter function 
Pn346.0 Full-closed loop function activation 
Initial Value  Unit  Setting Range  Effective  RS-485 Address 
0  --  0 ~ 1  Effective after Set  0337H 
Setting Description:   
 
 
Setting  Description 
0  Close  
1  Activate