Supply Unit Selection; Dc Link Power Supplied Via Acsm1; Single Ac Input; Multiple Ac Input - ABB ACSM1 System Manual

14

Supply unit selection

DC link power supplied via ACSM1

The DC link power can be supplied via a suitable ACSM1 drive module for
the common DC system. The drive module will be selected based on P
and P

Single AC input

In the optimum situation only one ACSM1 drive module is connected to AC
supply and the other drive modules are supplied via DC link. The following
conditions must be fulfilled:
•
•
If the conditions can not be fulfilled, either a drive module with higher P
ratings can be selected (if feasible) or a multiple AC input configuration can
be used.

Multiple AC input

In case two or more drive modules are connected to the AC supply, the
same conditions as above must still be fulfilled:
•
•
where P
P
rec,ave1
power ratings. It is recommended that the parallel connected units are the
same size.
requirements.
mot,max
P < P
mot,ave rec,ave
P < P
mot,max rec,max
P < P
mot,ave rec,ave
P < P
mot,max rec,max
ratings are now calculated from the individual ratings as follows
rec
•
P = P
rec,ave rec,ave1
•
P = P
rec,max rec,max1
and P are are the values of the drive module with the highest
rec,max1
+ 0.8 x (P + P
rec,ave2 rec,ave3
+ 0.7 x (P + P
rec,max2
+.... )
+.... )
rec,max3
mot,ave
rec