Siemens SINAMICS G120 Operating Instructions Manual page 199

Reference variables for unit changeover
p2000 Reference frequency/speed
p2001 Reference voltage
p2002 Reference current
p2003 Reference torque
r2004 Reference power
SINAMICS G120C Inverter
Operating Instructions, 01/2011, FW 4.4, A5E02999804A AB
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.
8.9 Application-specific functions
Functions
197