Selecting Physical Units; Motor Standard; Selection Options And Parameters Involved; Unit System - Siemens SINAMICS G120X Operating Instructions Manual

Advanced commissioning
6.3 Drive control
6.3.10

Selecting physical units

6.3.10.1

Motor standard

Selection options and parameters involved

The converter represents the motor data corresponding to motor standard IEC or NEMA in
different system units: SI units or US units.
Table 6-76
Parame‐
ter
r0206
p0307
p0316
r0333
p0341
p0344
r0394
r1493
Factory setting
1)
It is only possible to change the motor standard during quick commissioning.
6.3.10.2

Unit system

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 [%]
● p0505 = 3: US system of units
Torque [lbf ft], power [hp], temperature [°F]
● p0505 = 4: System of units, referred/US
Represented as [%]
294
Parameters involved when selecting the motor standard
Designation
Power Module rated power
Rated motor power
Motor torque constant
Rated motor torque
Motor moment of inertia
Motor weight
Rated motor power
Total moment of inertia, scaled
Motor standard IEC/NEMA, p0100 =
0
1)
IEC motor NEMA motor
50 Hz, SI units 60 Hz, US units
kW
kW
Nm/A lbf ft/A
Nm
kgm
2
kg
kW
kgm
2
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
1 2
NEMA motor
60 Hz, SI units
hp kW
hp kW
Nm/A
lbf ft Nm
lb ft kgm
2 2
Lb kg
hp kW
lb ft kgm
2 2
SINAMICS G120X converter