Lenze 931W - Manual (Page 46)

Software implementation and parameter setting
Travel data sets menu
Position - time
5
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46 HB 13.0001-EN 3.0
5.6.5 Position - time
For the controller types ”Following error”, ”Speed” and ”Torque/force”, the possibility of
setting the time and duration of the travel data set is provided, whereas for the controller
types ”Absolute position” and ”Relative position”, one value for the position or for the
position change is entered. The maximum value for the ”Absolute position” is 2 31
increments. Like the other parameters, the unit of the entered value acts in accordance
with the default setting; if the value ”0” is entered, no position change is effected in the
case of a relative positioning, but observance of the other parameters, such as the position
control end time and waiting time.
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Note!
An entered time value of ”0” for the controller types ”Following error”, ”Speed”
and ”Torque” causes the travel data set to be carried out for an optional
duration until it is interrupted by a stop command, a fault, or by a
disconnection from the supply.
ƒ Accepting the actual position
By activating the ”Accept actual position” button, the current position value which is
displayed in the status menu is entered in the position box and therefore is accepted as the
absolute position value. This function correspondingly can only be activated for the
controller type ”Absolute position”.
5.6.6 Acceleration value
An arbitrary acceleration value for starting a travel data set from a non-operative state or
from a low speed up to a device-specific maximum limit of approx. 260000 rpm*1/s can be
entered in this field. Particularly if low acceleration values are entered, the scanning time
set in the ”Controller” menu has to be considered.
5.6.7 Acceleration ramp
The acceleration ramp describes the characteristics of the acceleration curve. The
following acceleration ramps can be selected: linear or sine square. The advantage of the
sine square curve is a soft start acceleration and therefore a reduction of the starting
pressure.
5.6.8 Deceleration value
Here, in analogy to the ”Acceleration value” the deceleration value is set. The difference,
however, is that in this case the entered value refers to the deceleration of the motor when
the travel data set/travel program is stopped.
5.6.9 Deceleration ramp
For deceleration, the same ramp types as for the acceleration values can be configured:
linear or sine square.