Positioning With Positively Initialized Overtravel - WAGO -I/O-SYSTEM 750 Manual

32 • 750-636 [DC Drive Controller]
Function Description
2.1.1.9.8.5

Positioning with positively initialized overtravel

Example 10:
HP = SP
Fig. 2.1.1-16: Example 10
The positively initialized overtravel forces the setpoint position to be
approached from above. In example 10, the actual position is further above
the setpoint position than the absolute value of the overtravel. Thus the
setpoint position can be reached within the first moving cycle.
Example 11:
PU = BD
PD = BD
RT = 1
OZ = 0
OT = +V
Fig. 2.1.1-17: Example 11
In example 11, the actual position is below the setpoint position. The drive
should now overtravel the setpoint position by the amount of the absolute
overtravel value. It is detected, however, that the absolute overtravel value is
not at least twice as large as the current prestop value for the Down direction.
In order to compensate for this, the setpoint position is overtravelled by a
greater distance than the given overtravel so that the first setpoint position
approach of the moving cycle can be successful.
OT
BD
-
AP = SP + PD
AD
-
IP
AD
OT
PU
SP AP = HP - PU
2 x PD > Abs(OT)
PD
-
HP = SP AP = SP + PD
PU = BD
PD = BD
RT = 0
OZ = 0
+
OT = +V
IP
g063619x
PU
+
HP
AD
+
IP
g063620x
WAGO-I/O-SYSTEM 750
I/O-Modules