Lenze 931E/K Small Drives Control - Manual (Page 16)

User interface
Starting SDC / user interface
Display of setpoints and actual values
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16 SW−HB 13.0002−EN 4.1
4.2.4 Display of setpoints and actual values
The parameterisation program uses the following concept to display the setpoints
selected by the user and the actual controller values:
1. The user changes the scroll box value in the control window by using the scroll bar
or direct entry of a new value.
2. The parameterisation program transfers the value to the 931E/K servo positioning
controller.
3. The parameterisation program immediately reads the currently valid parameter and
displays it in the green field. The scroll box value itself remains unchanged.
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Term definition:
ƒ Setpoint: Setpoint transferred to the 931E/K servo positioning controller (setting
defined by the user)
ƒ Actual value: Value currently effective in the 931E/K servo positioning controller. A
deviation from the setpoint may have different causes. Examples:
– Quantisation effects, rounding effects, etc.
– The modified parameter will only show effect after storage and controller RESET
– Value range has been temporarily exceeded, e.g. rated current > maximum
current.
– Incorrect value ranges, e.g. when loading a parameter set from a servo positioning
controller with a higher power class (rated current > rated controller current).
)
Note!
The concept of different setpoints and actual values shall enable loading a
parameter set from a servo positioning controller of a certain power class into
a servo positioning controller of another power class and back again. Unless no
additional parameters have been set, the setpoints will remain unchanged.
Only the actual values will change due to the different power classes. This
largely ensures that a parameter set will not be step−by−step changed
depending on the power class of the controller.