LENZE
Dimensioning for DC-bus operation
ƒ
Dimensioning of multi-axis modules in a DC-bus connec-
tion
The best way to select the ideal supply module for a multi-
axis application is to use a time/power diagram for a
complete machine cycle for all axis modules. The required
total power of the supply modules can be calculated by
adding the isochronous individual power ratings. The re-
quired braking power can be calculated accordingly. The
required power can be provided by the individual 93xx
axis modules, 936x axis modules or 934x regenerative
power supply modules.
0
P
3
0
P
2
0
P
1
12
13
11
1
2
3
4
5
6
7
8
9
10
t
0
P
res
t
0
P
4
13
11
1
2
3
4
5
6
7
8
9
10
12
P
res
Time/power diagram of a multi-axis servo system
P
1
…P
4
= individual power of axis 1…axis 4
P
res
= addition of individual powers
P
res 1-4
= mean value of individual powers
19
†
Servo inverters en 03/2009
9300 servo inverter
Product information