Setting Mechanism; Setting Parameter Setpoint - Siemens SINAMICS V90 Operating Manual

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4.2 Parameterizing
4.2.2

Setting mechanism

By parameterizing the mechanical system, the link between the physical moving part and the
length unit (LU) is established. Select the mechanical structure. Set the gearbox factor and
the length unit per revolution of the load on the following panel:
The unit of the fixed position setpoint is the Length Unit (LU). All subsequent position
setpoint, related speed value, and acceleration value will maintain the LU as the unit in
internal position control mode.
Taking a ball screw system for example, if the system has a pitch of 10 mm/revolution, the
resolution of the length unit should be 1 µm (1 LU = 1 µm). Therefore, one load revolution
corresponds to 10000 LU (p29247 = 10000).
4.2.3

Setting parameter setpoint

Setting parameter setpoint is used to specify parameters related to speed, torque and
position.
Depending on the current control mode, you can configure parameters of the sub-functions
as follows:
Function
Signal form selection
(Page 46)
Position setpoint smoothing
time setting (Page 46)
42
Control mode
PTI IPos
✓
✓ ✓
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Operating Manual, 02/2015, A5E32187373-003
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