6.14
Selecting physical units
6.14.1
Select the motor standard
Selection options and parameters involved
The inverter represents the motor data corresponding to motor standard IEC or NEMA in
different system units: SI units or US units.
Setting the motor standard using p0100 is part of quick commissioning.
Table 6-31
Parameters involved when selecting the motor standard
Parame‐
ter
Designation
Motor standard IEC/NEMA, p0100 =
0
1)
IEC motor
50 Hz, SI units
1
NEMA motor
60 Hz, US units
2
NEMA motor
60 Hz, SI units
r0206
Power Module rated power
kW
hp
kW
p0219
Braking resistor braking 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
p0341
Motor moment of inertia
kgm
2
lb ft
2
kgm
2
p0344
Motor weight
kg
Lb
kg
r0394
Rated motor power
kW
hp
kW
r1493
Total moment of inertia, scaled
kgm
2
lb ft
2
kgm
2
1)
Factory setting
6.14.2
Selecting the system of units
Some physical units depend on the system of units selected (SI or US), for example the power
[kW or hp] or the torque [Nm or lbf ft]. You can select in which system of units the converter
represents its physical values.
Options when selecting the system of units
The following options apply when selecting the system of units:
● p0505 = 1: System of units SI (factory setting)
Torque [Nm], power [kW], temperature [°C or K]
● p0505 = 2: Referred system of units/SI
Represented as [%]
Advanced commissioning
6.14 Selecting physical units
SINAMICS G120C converter
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34263257B AF
211
