Siemens SIMOTICS-T 1FW68, Инструкция по эксплуатации

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Technical data and characteristics
6.2 Data sheets and characteristics
1FW68 radial segment motors
Configuration Manual, 04/2017, 6SN1197-0AE02-0BP1
121
For the SINAMICS S120 drive system, as a result of the field weakening function, when the
"voltage limiting characteristic" is reached, then the voltage induced in the motor winding is
automatically compensated. As a consequence, the speed range of a motor can be
extended without requiring a larger power module. The operating points for field weakening
that can be reached when motoring, are located to the left or below the "voltage limiting
characteristic with field weakening" and to the right of the "voltage limiting characteristic".
Note
Above a certain speed, a VPM Voltage Protection Module is required; refer to the Chapter
"Data sheets and characteristics" regarding this topic.
Please note that as the speed increases, the rotor power loss also increases. This means
that additional measures must be taken to dissipate the rotor power loss.
The circle shown in the "Schematic description of the torque-speed diagram" diagram on the
torque axis designates the area/range around M
0
and M
0
*. This area is shown magnified in
the detailed view.
The reference motor described has a high number of poles - and has an adequately large
thermal time constant. As a consequence, torque M
0
can be reached, even at very low
speeds.
The torque-speed diagrams for the reference motor can be found in Chapter "Data sheets
and characteristics".
6.2 Data sheets and characteristics
Table 6- 1 Color assignment of the M-n characteristics in the diagram
Color Resulting DC link voltage
U
DC
Converter output voltage
(rms value) U
a max
Permissible line supply
voltage
(rms value)
SINAMICS S120
Line Module
600 V
425 V 400 V Active Line Module,
controlled with regenera-
tive feedback