Operating the Drive
8-30
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames E & F
8
9
10
11
A
B
C
D
1
2
3
4
5
6
E
EMC Filtering
We recommend all 890 Regen systems meet the EMC product
specific standard EN61800-3. To achieve this, an EMC filter is
required. Refer to Chapter 7: "Associated Equipment" for details
of suitable filters.
Contactor and Fusing
♦
Use AC Line Fuses to protect the 4-Q Regen drive. These
fast, semiconductor protection fuses must be capable of withstanding the system AC supply voltage.
Refer to Appendix E.
♦
The AC contactor, CON1, used in the external pre-charge circuit must have an AC1 or thermal rating of
the constant torque current rating of the 4-Q Regen drive. Refer to page 8-43.
♦
Use DC Link fuses in both the DC+ and DC- lines to protect each drive connected to the common DC
bus. The fuses must be of suitable current rating and capable of withstanding 1000Vdc . Although HRC
fuses would be adequate, the high DC voltage requirement (1000Vdc) may limit the choice to
semiconductor fuses. Refer to page 8-41.
♦
The DC contactor used in the Brake Mode system (refer to page 8-39) must have an adequate thermal
rating for the regen current required. Typically the regen rating of the system, and hence the rating of the
DC contactor and fuses, will be less than motoring requirement as the contactor should not open under
load.
Drive Set-up
The 890 Common Bus drive must be set-up correctly to work in a 4-Q Regen Control/Common DC Bus
Application.
Typically the system will contain an 890 4-Q Regen drive providing the 4-Q power supply, and one or more
890 drives on the common DC bus.
Regen Control
–
SYNCHRONIZING
[1641]
–
FALSE
–
SYNCHRONIZED
[1642]
–
FALSE
–
PHASE LOSS
[1643]
–
FALSE
–
CLOSE PRECHARGE
[1644]
–
FALSE
–
ENABLE DRIVE
[1645]
–
FALSE
–
STATUS
[1646]
–
SUPPLY FREQ LOW
TRUE
–
[1633] PRECHARGE CLOSED
–
720V
–
[1634] DC VOLTS DEMAND
–
FALSE
–
[1678] BRAKE MODE
–