Filter
Top Products
227
Motor brake and stop operation
4
PARAMETERS
Servo torque selection (Pr. 358 )
Valid only under V/F control and Advanced magnetic flux vector control.
1)Servo torque function selection until output of the orientation complete signal
Whether servo torque is available or not is selected using Pr. 358 Servo torque selection. Servo torque is not generated
if the current position pulse is in between the orientation stop position and DC injection brake start position. Although,
the shaft is retained by the DC injection brake, servo torque is generated to return the shaft within the width if the
shaft moves out of the width by external force, etc. Once the orientation complete signal (ORA) is output, the motor
runs according to the setting made in 4).
2)Retry function selection
Select retry function using Pr. 358 Servo torque selection. Note that servo torque function cannot be used together.
When the motor shaft is not stopped within the in-position zone when the motor stop is checked, orientation
operation is performed again by retry function.
With this retry function, three orientations including the first one are performed. More than three times retry
operations are not made. (The orientation fault signal (ORM) is not output during retry operation)
3)Frequency compensation function when the motor stops outside the orientation in-position zone
When the motor stops before entering the in-position zone due to external force, etc., output frequency is increased
to move the shaft to the orientation stop position. The output frequency is gradually increased to the creep speed of
Pr. 352 Creep speed .
Note that retry function cannot be used together.
4)DC injection brake and servo torque selection when the position pulse comes off the in-position zone after output of
the orientation complete signal (ORA)
If the position pulse comes off the orientation in-position width, you can select a setting either fixing a shaft with the
DC injection brake or returning the motor to the orientation stop position with servo torque.
5)Orientation operation end switch operation selection between DC injection brake or servo torque
When ending the orientation operation, turn OFF the start signal (STF or STR), then turn OFF the orientation
command (X22). At this time, you can select when to turn OFF the orientation complete signal (ORA) from between
at turning OFF of the start signal or turning OFF of the orientation command signal.
6)Selection of completion signal OFF or ON when the motor stops outside of the in-position zone after output of the
orientation complete signal (ORA)
You can select the mode to turn OFF the completion signal or keep the completion signal ON (orientation fault signal
(ORM) is not output) when the motor stops outside of the in-position zone.
Pr. 358 Setting
Function
Remarks
0 1 2 3 4 5 6 7 8 9 10 11 12 13
1) Servo torque function selection
until output of the orientation
complete signal (ORA)
×
×
×
×
××
: With servo torque function
×: Without servo torque function
2) Retry function selection
×××××××
×× ×
××
: With retry function
×: Without retry function
3) Output frequency is compensated
when the motor stops outside the
in-position zone
××
×
×××× ×
: With frequency compensation
×: Without frequency compensation
4) DC injection brake and servo
torque selection when the position
pulse comes off the in-position
zone after output of the orientation
complete signal (ORA)
××××
: With DC injection brake
×: With servo torque
5) End switch selection of the DC
injection brake and orientation
complete signal (ORA)
××
×××××
: When the start signal (STF, STR) or
orientation command is turned OFF
×: When the orientation command is
turned OFF
6) Completion signal OFF selection
when the position pulse comes off
the in-position zone after output of
the orientation complete signal
(ORA)
×××××× × × ×
: Turn OFF the completion signal when
the motor stops outside of the in-
position zone
×: Completion signal remains ON even if
the position pulse comes off the
completion zone
(orientation fault signal (ORM) is not
output)
REMARKS
• When the orientation command is OFF with the start signal ON, the speed accelerates to the command speed.
• When the motor shaft stops outside of the set setting range of stop position, the motor shaft is returned to the stop position by
servo torque function (if enough torque is generated).