Fiber Optic Connections - ABB BCU-02 Hardware Manual

10 Hardware description

Fiber optic connections

The BCU-02 control unit has two fiber optic connections V1 and V2 for connecting to
converter modules. The BCU-12 control unit has one BPEB-05 board, and the BCU-22
control unit has two BPEB-05 boards. Each BPEB-05 board adds five fiber optic
connections. Thus, the BCU-12 has seven connections (V1...V7), and the BCU-22 has
twelve connections (V1...V12).
The maximum lengths of the cables are:
•
1 mm plastic optical fiber cables, 35 m (115 ft)
•
200 m hard-clad silica fiber cables, 100 m (328 ft).
μ
Fiber optic pairs connected to one control unit must have the same length. With long
distances, cables of different length cause different delays, which can have an unwanted
effect on the operation.
BCU-x2
V1 V2
xINT
Module 1
xINT
Module 2
For instructions on how to connect the control unit to the converter module(s), see the
applicable converter hardware manual.
I/O
BIOC-01
BPEB-05
V3 V4 V5
xINT
Module 3
V6 V7 V8 V9
xINT
Module 7
xINT
Module 8
BPEB-05
V10 V11 V12
xINT
Module 12