Siemens SINAMICS G130 Engineering Manual page 79

On the basis of the relations and diagrams given above, the peak value of voltage V
cable lengths of > 15 m can be calculated exactly:
The following tables provide an overview of the peak values of V
the above influencing factors for typical SINAMICS drive constellations with motor cable lengths of > 15 m.
The peak values of motor voltage V
G150, S120 Basic Line Modules) or on drives with Smart Infeeds.
Line supply voltage
V
Line
400 V
480 V
500 V
600 V
660 V
690 V
Peak values of motor voltage V
The peak values of motor voltage V
up converters (S150, S120 Active Line Modules).
Line supply voltage
V
Line
400 V
480 V
500 V
600 V
660 V
690 V
Peak values of motor voltage V
Motor voltage V reaches the highest peak values during braking when the V
PP
braking unit is active. In the case of a braking unit, it is assumed that its activation threshold has been adjusted to suit
the line voltage, i.e. that the lower activation threshold of the braking unit is selected for low line voltages. Details can
be found in the unit-specific chapters, e.g. G130 or G150.
Line supply voltage
V
Line
400 V
480 V
500 V
600 V
660 V
690 V
Peak values of motor voltage V
Fundamental Principles and System Description
V
= •
DCLink
V V
PP Line
V
Line
are the lowest on drives with Basic Infeeds operating in motor mode (G130,
PP
DC link voltage
≈ 1.35
V V
DCLink * Line
540 V
650 V
675 V
810 V
890 V
930 V
with motor cable length > 15 m and a Basic Infeed or Smart Infeed
PP
are somewhat higher when Active Infeeds are used as these operate as step-
PP
DC link voltage set to
factory value
V = 1.5 V
DCLink * Line
600 V
720 V
750 V
900 V
990 V
1035 V
with motor cable length > 15 m and an Active Infeed
PP
Activation voltage of
braking unit
673 V (lower threshold)
774 V (upper threshold)
841 V (lower threshold)
967 V (upper threshold)
1070 V (lower threshold)
1158 V (upper threshold)
with motor cable length > 15 m and braking operation with a braking unit
PP
•
r
occurring on the motor winding as a function of
PP
Peak voltage V
PP
on motor winding with
a reflection factor of 1.7
920 V
1100 V
1150 V
1380 V
1510 V
1580 V
Peak voltage V
PP
on motor winding with
a reflection factor of 1.7
1020 V
1220 V
1270 V
1530 V
1680 V
1760 V
Peak voltage V
PP
on motor winding with
a reflection factor of 1.7
1140 V
1320 V
1430 V
1640 V
1820 V
1970 V
SINAMICS Engineering Manual - May 2008
Engineering Information
on the motor winding for motor
PP
Peak voltage V
on motor winding with
a reflection factor of 2.0
1080 V
1300 V
1350 V
1620 V
1780 V
1860 V
Peak voltage V
on motor winding with
a reflection factor of 2.0
1200 V
1440 V
1500 V
1800 V
1980 V
2070 V
controller or a connected
DC max
Peak voltage V
on motor winding with
a reflection factor of 2.0
1350 V
1550 V
1680 V
1934 V
2140 V
2320 V
79/396
© Siemens AG
PP
PP
PP