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PARAMETERS
Position control
(2) Stopper control by torque limit automatic switching under position control (Pr.512 to Pr.515)
When the current position [before the electronic gear] exceeds the stopper control switching position (Pr.515 + Pr.514 ),
the Pr.513 setting is applied and E.OLT is disabled.
Select the valid stopper control switching position (Pr.515 + Pr.514 ) from the following using Pr.512 Stopper control function
selection : both the plus and minus positions, plus position only, or minus position only.
When Pr.513 Stopper control torque limit has been activated and has stopped the motor, E.OLT does not occur, but the
electronic thermal O/L relay is activated. Thus, performing stopper control at a high load for a long time may cause the
motor overload trip fault (E.THM) or drive unit overload trip fault (E.THT).
REMARKS
If the torque limit operation is disabled by Pr.156 Torque limit selection, this function is disabled.
With Pr.156 set to any of "16 to 29", when the OL signal is output while a workpiece is pressed, the output of the drive unit is
shut off by E.OLT.
If the home position return is not performed under position control in other than the roll feed mode, the position at servo-ON
(pre-excitation) is set as the home position.
Under position control in the roll feed mode, the position at startup is set as the home position.
If the stopper control torque limit operation at high level is performed for a long time, a resistance error occurs due to a
temperature change of the motor, and this error may cause a position error.
The droop pulses during stopper control under position control are held, causing an operation delay corresponding to the droop
pulses after the stopper is released.
Pr.22 Pr.513 Pr.22
Torque limit
Position
[before electronic gear]
Position command
Pressing
Current position
Time
Pr.515 + Pr.514