Selection
Selection examples
12
Network of several drives
12.5
12.5.5
L
12.5-9
EDS82EV903-1.0-11/2002
t
P
1
P
2
t
P
t
P
max
T
t
1
t
2
t
3
P
DC
P
Bmax
Fig. 12.5-1 Example with two simultaneously accelerated and decelerated drives
P1 Power characteristic for the 1st drive
P2 Power characteristic for the 2nd drive
ΣP Sum power of the network.
P
Bmax
Peak brake power in the network
P
max
Peak drive power in the network
P
DC
Permanent power
P
t
P
t
P
t
P
Bmax
P
max
P
DC
T
Fig. 12.5-2 Example with two not simulateneously accelerated or decelerated drives
P1 Power characteristic for the 1st drive
P2 Power characteristic for the 2nd drive
ΣP Sum power of the network.
P
Bmax
Peak brake power in the network
P
max
Peak drive power in the network
P
DC
Permanent power
In example Fig. 12.5-2 the required peak power (P
max
and P
Bmax
) is higher than
in example Fig. 12.5-1.