Siemens SINAMICS V90 - Setting Mechanism; Setting Parameter Setpoint

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56 Operating Manual, 04/2017, A5E36618042-003
4.3.2
Setting mechanism
By parameterizing the mechanical system, you can establish the link between the physical
moving part and the length unit (LU). Select the mechanical structure and then set the
gearbox factor as well as 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 take LU as their unit in IPos control
mode.
Taking a ball screw system for example, if the system has a pitch of 10 mm/revolution, then
the resolution of the length unit should be 1 µm (1 LU = 1 µm). Therefore, one load
revolution corresponds to 10000 LU (p29247 = 10000).
4.3.3
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 following sub-
functions:
Function
Control mode
V90 PN
V90 PTI
EPOS
S
PTI
IPos
S
T
Signal form selection
(Page 57)
✓
Position setpoint
smoothing time setting
(Page 57)
✓ ✓ ✓
Position reached win-
dow setting (Page 57)
✓ ✓ ✓