Mitsubishi Electric FR-A800, Instruction Manual

Page: 694 / 1042

(A) Application parameters Parameters
5 - 514
Servo torque selection (Pr. 358) (V/F control, Advanced magnetic flux vector control)
To terminate orientation, the start signal (STF or STR) must be first switched OFF, and then
the X22 signal must be switched OFF.
As soon as this X22 signal is switched OFF, orientation
control ends. (Depending on the Pr. 358 "Servo torque selection" setting, the orientation status
continues if the X22 signal remains ON even if the DC injection brake is released by turning OFF
the start signal. Because of this, the orientation status on the monitor does not show "0".
When the retry function of Pr. 358 "Servo torque selection" is selected, the retry operation is per-
formed three times including the first orientation.
When performing orientation control, properly set Pr. 350 "Stop position command selection" and
Pr. 360 "16-bit data selection" (external position command selection). If the values are set incor-
rect, proper orientation control will not be performed.
When orientation control is performed, PID control is disabled.
Function and description
Operation for each Pr. 358 setting
Remarks
0 1 2 3 4 5 6 7 8 9 10 11 12 13
Servo torque function until
output of the orientation
complete signal (ORA)
×
   
×

×

×

× ×


: With servo torque function
×: Without servo torque function
Retry function × × × × × × ×

× × ×

× ×

: With retry function
×: Without retry function
Output frequency
compensation when the
motor stops outside the in-
position zone
× ×
 
×
 
× × × × ×
 

: With frequency compensation
×: Without frequency
compensation
DC injection brake and servo
torque when the motor exits
the in-position zone after
output of the orientation
complete signal (ORA)

× × × ×
        

: DC injection brake enabled
×: Servo torque enabled
Turning OFF the orientation
complete signal (ORA) when
the orientation operation is
ended.
  
× ×
   
× × × × ×

: When the start signal (STF,
STR) or orientation command
is turned OFF
×: When the orientation
command is turned OFF
Complete signal when the
motor exits the in-position
zone after output of the
orientation complete signal
(ORA)
    
× × × × × × × × ×

: Turns OFF the complete signal
when the motor exits the in-
position zone
×: Complete signal remains ON
even if the motor exits the in-
position zone (orientation
fault signal (ORM) is not
output)
Tab. 5-215: Settings of parameter 358
NOTES When the orientation command turns OFF while the start signal is ON, the motor accelerates to
the command speed.
When the motor shaft stops outside of the set setting range of the stop position, the motor shaft is
returned to the stop position by the servo torque function (if enough torque is generated).