Control units of the drive
Contents of this chapter
This chapter
• describes the connections of the control unit(s) used in the drive,
• contains the specifications of the inputs and outputs of the control unit(s).
General
The drive utilizes either BCU-x2 control units or UCU-22…24 control units.
The supply and inverter units of the drive are each controlled by a dedicated control
unit. The designation of the supply control unit is A51; the inverter control unit is A41.
Both are connected to the power modules (ie. supply and inverter modules respectively)
by fiber optic cables.
In this manual:
• the name "BCU-x2” represents the control unit types BCU-02 and BCU-12. These
have a different number of power module connections (2 and 7 respectively) but
are otherwise similar.
• the name "UCU-22…24” represents the control unit types UCU-22 and UCU-23.
These have a different number of power module connections (2 and 8 respectively)
but are otherwise similar.
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Control units of the drive 143
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