Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control (PanelView 550) - Manual (Page 86)

86 Rockwell Automation Publication 7000-UM151E-EN-P - January 2013
Chapter 3 Component Definition and Maintenance
Fiber Optic Cabling
The equipment uses fiber optic cabling between the low voltage control and the
medium voltage circuits. You should never need to change the routing of the fiber
optic cables.
Each end of a fiber optic cable has a connector that plugs and latches into its
respective location on a circuit board. To disconnect a fiber optic cable, depress
the ridged plastic tab at the end connector and pull. To install a fiber optic cable
insert the fiber optic port of the circuit board so that the plastic tab latches into
place.
If you must replace fiber optic cables, be careful to prevent the cables from
straining or crimping as a resulting loss in light transmission will impact
performance.
The minimum bend radius permitted for the fiber optic cables is 50 mm (2.0
inches).
When installing the fiber optic cable, match the connector color at the end of the
cable with the connector socket color on the circuit board.
The product uses the following fiber optic cable lengths.
There is one duplex fiber optic for each thyristor, which manages gating and
diagnostic functions. The circuitry on the respective driver boards determines the
thyristor’s functional status, and sends this information to the main processor via
a fail-safe light signal in the fiber optic. The main processor initiates the firing
command for the thyristor and transmits the signal to the appropriate gate driver
board via the gating fiber optic.
The color codes of the connectors are:
BLACK or GREY – is the transmitting end of the fiber optic.
BLUE – is the receiving end of the fiber optic.
Duplex Simplex
5.0 meter 5.0 meter
5.5 meter 6.0 meter
6.0 meter 10.0 meter
6.5 meter
7.0 meter