Parker 890SD - A Smart Brake System

Operating the Drive
Page 7-36 890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
8
9
10
11
A
B
C
D
1
2
3
4
5
6
7
E
A Smart Brake System
890 Drive
(Smart Brake)
DC+
DC
-
U
V
W
AC Motor
U
V
W
4-Q Active Front End
Common DC Link
External Pre -
Charge
Control
Motor Acting as Load
(Motoring)
Motor Acting as Brake
(Regenerating)
DC-
DC+
DC
Link
Fuses
890
Drive
AC Motor
U
V
W
DC- DC+
890
Drive
3%
3-Phase
Supply
3%
Isolating
Transformer
DC Link
Contactor
DC Link
Healthy
3-Phase
Line Choke
3-Phase
Line Choke
DC Link
Healthy
IMPORTANT It is essential to use an isolation transformer on the supply to the Smart Brake drive, as shown above.