Siemens SINAMICS G120 - Changing over the Motor Standard

Setting functions
8.7 Application-specific functions
Inverter with CU230P-2 Control Units
268 Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG
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 several 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.
Reference variables for unit changeover
p2000 Reference frequency/speed
p2001 Reference voltage
p2002 Reference current
p2003 Reference torque
r2004 Reference power
p2005 Reference angle
p2006 Reference temperature
8.7.1.1
Changing over the motor standard
You change over the motor standard using p0100. The following applies:
● p0100 = 0: IEC motor (50 Hz, SI units)
● p0100 = 1: NEMA motor (60 Hz, US units)
● p0100 = 2: NEMA motor (60 Hz, SI units)
The parameters listed below are affected by the changeover.
Table 8- 24 Variables affected by changing over the motor standard
P no.
Designation
Unit for p0100 =
0*
)
1
2
r0206
Power Module rated power
kW
HP
kW
p0307
Rated motor power
kW
HP
kW
p0316
Motor torque constant
Nm/A
lbf ft/A
Nm/A
r0333
Rated motor torque
Nm
lbf ft
Nm
r0334
Motor torque constant, actual
Nm/A
lbf ft/A
Nm/A
p0341
Motor moment of inertia
kgm
2
lb ft
2
kgm
2
p0344
Motor weight (for thermal motor type)
kg
Lb
kg
r1969
Speed_cont_opt moment of inertia determined
kgm
2
lb ft
2
kgm
2
*) Factory setting