Software limit switches

INFORMATION

This function is only available when MOVIKIT® Positioning Drive is used.

Software limit switches are used to limit the travel range of an axis. Monitoring of the software limit switches can be activated and configured in the configuration menu of the software module during startup. The drive must be referenced to enable monitoring of the software limit switches.

If software limit switch monitoring is enabled, the following response is triggered depending on the active operating mode as soon as the configured positive or negative limit switch position is exceeded:

  • Jog mode – position controlled (100)
  • The drive stops at the software limit switch position using the deceleration specified via PO 4. If the "Limit switch fault response" is activated, the error message "E30.01/02: Positive/negative limit switch hit" is issued.
  • Jog mode – speed controlled (101) and speed control (200)
  • The drive stops with the configured emergency stop ramp if the relevant "Limit switch error response" is enabled. The error message "E30.01/02: Positive/negative limit switch hit" is issued.
  • Positioning mode (400 – 404)
  • If a target position is specified that is beyond a software limit switch position, no travel job is executed when the drive is stationary. If it is not stationary, the drive stops with the deceleration set in the application limits. The error message "E19.02: Position setpoint violation" is issued.

Error messages can be reset using PO 1.8 "Fault reset". First, specify a direction of rotation or a target position in the direction of the valid range of the software limit switches. If you wish to move the drive outside the range limited by the software limit switches, you have to deactivate the software limit switches using the PO 1:12 signal.