In the case of variables whose units are identical in the SI system and US system, and which
can be displayed as a percentage, the following applies:
p0505=1≙p0505=3 and p0505=2≙p0505=4.
Reference variables
There is a reference variable in the converter for most parameters with physical units. When the
referred representation [%] is set, then the converter scales the physical variables based on the
particular reference variable.
When the reference variable changes, then the signicance of the scaled value also changes.
Example:
• Reference speed = 1500rpm → xed speed=80% ≙ 1200rpm
• Reference speed = 3000rpm → xed speed=80% ≙ 2400rpm
For each parameter you can nd the associated reference variable for scaling in the List
Manual. Example: r0065 is scaled with reference variable p2000.
If scaling is not specied in the List Manual, then the converter always represents/displays the
parameter unscaled (not normalized).
Groups of units
The parameters associated with the selection of a physical unit, belong to dierent groups of
units.
You can nd the associated group of units in the List Manual for each parameter. Example:
r0333 belongs to unit group 7_4.
An overview of the unit groups and the possible physical units can also be found in the List
Manual.
7.14.3 Technological unit of the technology controller
Options when selecting the technological unit
p0595 denes in which technological unit the input and output variables of the technology
controller are calculated, e.g. [bar], [m³/min] or [kg/h].
Reference variable
p0596 denes the reference variable of the technological unit for the technology controller.
Unit group
Parameters involved with p0595 belong to unit group 9_1.
Further information on this topic is provided in the List Manual.
Overview of the manuals (Page588)
Advanced commissioning
7.14Selecting physical units
SINAMICS G115D Wall Mounted distributed drive
232 Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA
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