Rockwell Automation 8720MC High Performance Drives Installation Manual - Manual (Page 85)

Publication 8720MC-IN001D-EN-P — December 2002
Connecting Your 8720MC 3-23
Refer to figures Figure 3.9 for an example of fiber-optic ring
connections between the 8720MC drive(s) and the 1756-MxxSE
SERCOS interface module.
Figure 3.9
Fiber-Optic Ring Connection Example
To connect the SERCOS fiber optic cables:
1. Insert one end of a fiber-optic cable into the Receive SERCOS
connector on the 8720MC. Thread the connector on finger tight.
2. Insert the other end of the cable (from step 1) into the Transmit
SERCOS connector on the 1756-MxxSE interface module. Thread
the connector on finger tight.
3. Insert one end of another fiber-optic cable into the Transmit
SERCOS connector on the last 8720MC drive in the ring. Thread
the connector on finger tight.
4. Insert the other end of the cable (from step 3) into the Receive
SERCOS connector on the 1756-MxxSE interface module. Thread
the connector on finger tight.
5. Complete the ring by connecting the Transmit and Receive
connectors from one drive to the next until all are connected
(refer to the examples above).
Refer to Appendix C for SERCOS fiber optic cable and bulkhead
adapter catalog numbers.
1756-MxxSE SERCOS
Interface Module
ControlLogix Chassis
SERCOS Fiber-Optic Ring
8720MC
High Performance
Drive 8720MC
High Performance
Drive
Receive Transmit
Receive Transmit Receive Transmit