Stober PS6A34 - Fig. 6 Asymmetric Load on Double-Axis Controllers

6 | Technical data STOBER
48
02/2019 | ID 442728.05
6.3.1.7 Asymmetric load on double-axis controllers
Operating two motors on one double-axis controller makes it possible to operate one of the
motors with a continuous current above the nominal drive controller current if the continuous
current of the second connected motor is lower than the nominal drive controller current. This
enables economical combinations of double-axis controllers and motors.
The nominal output current for axis B can be determined using the following formula if the
output current for axis A is known:
Example 1
( )
2PU(B) 2N,PU 2PU(A) 2N,PU
3
I I I I
5
= - - ´
where
2PU(A ) 2N,PU
0 I I£ £
Example 2
( )
2PU(B) 2N,PU 2PU(A) 2N,PU
5
I I I I
3
= - - ´
where
2N,PU 2PU(A ) 2N,PU
I I 1,6 I£ £ ´
160 %
I
2PU(B)
I
2PU(A)
I
2N,PU
I
2N,PU
160 %
1
2
Fig.6: Asymmetric load on double-axis controllers
Information
Note that the available maximum currents I
2maxPU
of the axis controllers are also relative to the
nominal output current I
2N,PU
for an asymmetric load.