Lenze E94AxPExxxx - Manual (Page 516)

12 Basic drive functions
12.7 Positioning
516
Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
12.7.2.2 Actual value- and setpoint-based evaluation "Drive in the target"
An actual value- and setpoint-based evaluation on whether the drive is in the target can be carried
out by means of the output POS_bDriveInTarget and parameterisation of C02671 , C02672 , and
C02673 .
• The output POS_bDriveInTarget is set to TRUE if the current actual position value of the drive has
reached the target position of the profile to be traversed last within the tolerance window set
in C02671 .
• At this time, the current setpoint value has already reached the target position, i. e. the actual
position and set position are in the target.
• In the case of positioning processes with sequence profiles, the output is only set to TRUE
after the last profile to be traversed.
• The output POS_bDriveInTarget is reset to FALSE if the current actual position value of the drive
has exited the tolerance and hysteresis window set in C02671 and C02672 again after a
positioning process has been completed.
• How the modulo evaluation is to be carried out if the actual position value enters the tolerance
and hysteresis window again can be set in C02673 :
• Modulo evaluation in all cycles (Lenze setting):
The output POS_bDriveInTarget is set to TRUE again if the current actual position value of the
drive enters the tolerance window again in an optional modulo cycle.
• Modulo evaluation only in the modulo cycle of the target setpoint:
The output POS_bDriveInTarget is set to TRUE again if the current actual position value of the
drive enters the tolerance window again in the same modulo cycle.
• A new FALSETRUE edge at the output POS_bDriveInTarget after a positioning process has been
completed can for instance occur when the basic function is deactivated afterwards, and if the
drive axis is skewed so that the tolerance and hysteresis window is exited and then the
tolerance range is entered again.
Short overview of the parameters for the actual value- and setpoint-based evaluation:
Parameter Info Lenze setting
Value Unit
C02671 Tolerance for target position 2.0000 Unit
C02672 Hysteresis for target position 1.0000 Unit
C02673 Activate DriveInTarget Modulo All cycles