Control units of the drive 337
Control units of the drive
Contents of this chapter
This chapter
• describes the connections of the control units used in the drive
• contains the specifications of the inputs and outputs of the control units.
General
BCU control unit types
The BCU control unit is used in supply modules of frame sizes D7T and D8T, and in
inverter modules of frame size R8i. The BCU consists of a BCON control board (and a
BIOC I/O and power supply board) built in a metal housing. The BCU is mounted
separately from the supply / inverter module(s), and connected to the module(s) by fiber
optic cables.
In this manual, the name “BCU” represents the control unit types BCU-02, BCU-12 and
BCU-22. These have a different number of supply / inverter module connections (2, 7 and
12 respectively) but are otherwise similar.
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