Operating the Drive
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
Page
7-23
8
9
10
11
A
B
C
D
1
2
3
4
5
6
7
E
890CD/SD 4-Q Regen AFE Applications
Introduction
A
4-Q REGEN
(4 Quadrant Regenerative) control mode is available on all 890CD Common Bus Drives
and 890 Standalone Drives, provided that :
♦
the drive uses Software Version 1.x (1.8 or greater), or Software Version 3.x
(Software Version 2.x does not support 4Q mode)
AND
♦
for Frame B-D
: the SETUP::MISCELLANEOUS::EMC CAPACITORS parameter is set to (1)
NOT CONNECTED
♦
for Frame E-K
: the drive displays “/007” in Block 12 of the (Europe) Product Code indicating that
Special Option 7 is applied (“Y” cap disconnection)
IMPORTANT
All drives
in a common DC link scheme using a 4-Q Regen front-end
MUST
have their internal EMC
filter "Y" caps to earth (PE) removed.
The
4-Q REGEN
control mode allows a single 890 to act as a 4-Q power supply unit that is capable of
drawing (motoring) and supplying (regenerating) sinusoidal, near-unity power factor current from the
supply.
The output from the 4-Q Regen drive acts as a DC supply which is used to power other drives on a common
DC Bus system.
