Engineering Information
06.2005
6SE7087-6QX70 (Version AE)
Siemens AG
11-44
Compendium Motion Control
SIMOVERT MASTERDRIVES
11.9.5
Selection of the braking resistor
The braking resistor is connected to the chopper of the rectifier unit.
During rating, it is assumed that the drives of the x and z axes can
brake simultaneously.
♦
The maximum braking power levels of the two inverters are
therefore added together.
P
P
kW
kW
kW
br
br Inv
max
.
.
.
=
= −
−
= −
∑
4 08
3 32
7 4
♦
For the mean braking power, the individual mean values are also
added together.
P
P
kW
kW
kW
br mean
br Inv mean
=
= −
−
= −
∑
0 146
0 28
0 426
.
.
.
♦
A 6SE7018-0ES87-2DC0 braking resistor of 80
Ω
with P
20
= 5 kW
is necessary.
P
kW
br max
.
=
7 4
<
15
7 5
20
.
.
⋅
=
P
kW
P
kW
br meen
=
0 426
.
<
P
kW
20
4 5
111
/ .
.
=
Содержание simovert masterdrives
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Страница 947: ...08 2012 Siemens AG 6SE7087 6QX70 Version AN SIMOVERT MASTERDRIVES Compendium Motion Control Function Diagrams ...
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Страница 1466: ...03 2010 Siemens AG 6SE7087 6QX70 Version AL SIMOVERT MASTERDRIVES Compendium Motion Control List of function data set parameters ...
Страница 1471: ...03 2010 Siemens AG 6SE7087 6QX70 Version AL SIMOVERT MASTERDRIVES Compendium Motion Control List of binector data set parameters ...
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