Siemens SINAMICS G120 Operating Instructions Manual page 203

Reference variables for unit changeover
p2000 Reference frequency/speed
p2001 Reference voltage
p2002 Reference current
p2003 Reference torque
r2004 Reference power
SINAMICS G120C frequency converter
Operating Instructions, 03/2012, FW V4.5, A5E02999804B AB
NOTICE
The motor standard, the unit system as well as the process variables can only be
changed offline.
The procedure is described in Section Changing of the units with STARTER (Page 204).
Note
Restrictions for the unit changeover function
 The values on the rating plate of the inverter or motor cannot be displayed as
percentage values.
 Using the unit changeover function a multiple times (for example, percent → physical
unit 1 → physical unit 2 → percent) may lead to the original value being changed by
one decimal place as a result of rounding errors.
 If the unit is changed over into percent and the reference value is then changed, the
percentage values relate to the new reference value.
Example:
– For a reference speed of 1500 rpm, a fixed speed of 80% corresponds to a speed
of 1200 rpm.
– If the reference speed is changed to 3000 rpm, then the value of 80% is kept and
now means 2400 rpm.
9.9 Application-specific functions
Functions
201