Bosch rexroth MCL, Project Planning Manual

Page: 31 / 206

Parallel operation of two primary
parts on a drive controller
It is only allowed to connect primary parts parallel, which features
are identical. Usually this is only the case with identically con‐
structed types.
In the following is spoken of “identical” primary parts.
●
Same force constant K
FN
or voltage constant K
EMK
● Same winding resistance R
12
● Same winding inductivity L
12
The following interrelations exist for the parallel connection of two identical
primary parts at one drive controller (see Fig. 4-2 ):
● Doublication of the feed force of the axis in the case of same current in
each primary part (it not limited by the drive controller).
F
total
= 2 x F
Motor
● Doublication of the voltage within the drive controller (if not limited by it)
I
Inverter
= 2 x I
Motor
● Velocity v
Fmax
, v
N
and v
max
as for single arrangement
v
Fmax,total
= v
Fmax,Motor
/ v
N,total
= v
N,Motor
/ v
max,total
= v
max,Motor
● Same motor and voltage constant (K
FN
, K
EMK
)
K
FN,total
= K
FN,Motor
/ K
EMK,total
= K
EMK,Motor
● Total motor resistance and inductivity halved
R
12,total
= 1/2 x R
12,Motor
/ L
12,total
= 1/2 x L
12,Motor
A Single arrangement
B Parallel arrangement
Fig. 4-2: Characteristics force over velocity at single or parallel arrangment of
two primary parts on one controller
MCL Ironless Linear Motors 23/197
Technical data
R911330592_Edition 06 Bosch Rexroth AG