890CS & 890CD Common Bus Units
Page
4-14
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
Key to Wiring Diagram
J
FireWireâ„¢ Connection
A very fast external bus (IEEE 1394a) to connect up to 63 units. You will need the
FireWire Option Card for each Common Bus Drive, refer to Appendix A.
K
Motor
(M1, M2, M3)
The motor used must be suitable for Inverter duty. Ensure wiring is rated for highest
system voltage. Refer to Appendix E.
L
3∅ Power Supply Cable
(L1, L2, L3)
Ensure wiring is rated for highest system voltage.
Refer to Appendix E.
M
Metal Work Earth
Use the back panel for this earth. It provides earthing points for all parts of the cubicle
including doors and panels. Connect cubicle to earth/ground via cubicle PE terminal.
P
Fuse or Type B RCD
Fuse rating - refer to Chapter 6. We don't recommend the use of circuit breakers (e.g.
RCD, ELCB, GFCI), but if their use is mandatory, use only a Type B RCD.
R
Line Reactor (mandatory)
A 3% line reactor MUST be fitted to the 890CS unit. Refer to Chapter 6: "Associated
Equipment".
S
Signal/Control Screen Earth
This must be insulated from the back panel. Connect any signal/control screened cables
which do not go directly to the drives.
T
24V Power Supply
(mandatory on 890CS)
A 24Vdc power supply. Can also suppy the 890CD unit to allow for configuration and
commissioning of the system without the DC supply being present.
V
3 Phase AC Contactor
(mandatory on 890CS)
3 Phase AC Contactor used to isolate the 890CS unit for long periods.
The ENABLE contact (X02/03) is intended as an aid to functional sequencing only
and must NOT be used as the main system disable.
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