Siemens SINAMICS G120 CU230P-2, Руководство по эксплуатации, Страница: 223 / 346

Functions
7.9 Application-specific functions
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
221
The parameters listed below are affected by the changeover.
Table 7- 32 Variables affected by changing over the motor standard
Unit for p0100 = P no. Designation
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
7.9.1.2 Changing over the unit system
You change over the unit system using p0505. The following selection options are available:
●
P0505 = 1: SI units (factory setting)
● P0505 = 2: SI units or % relative to SI units
● P0505 = 3: US units
● P0505 = 4: US units or % relative to US units
Note
Special features
The percentage values for p0505 = 2 and for p0505 = 4 are identical. In order to perform
internal calculations and output values that are changed back over to physical variables,
however, an important factor is whether the changeover process relates to SI or US units.
In the case of variables for which changeover to % is not possible, the following applies:
p0505 = 1 ≙ p0505 = 2 and p0505 = 3 ≙ p0505 = 4.
In the case of variables whose units are identical in the SI system and US system, and
which can be displayed as a percentage, the following applies:
p0505 = 1 ≙ p0505 = 3 and p0505 = 2 ≙ p0505 = 4.
Parameters affected by changeover
The parameters affected by changing over the unit system are grouped according to unit.
An overview of the unit groups and the possible units can be found in the List Manual in
the Section "Unit group and unit selection".