Operation principle and hardware description 39
Overview of power and control connections
Input power connection of the supply module is located on the rear side of the module (AC
input connection), and the output power connection is located on top of the module (DC
output connection). Input power connection of the inverter module is located on top of the
module (DC input connection), and the output power connection is located on the rear side
of the module (AC output connection).
A cabinet-installed unit is typically controlled using the local control devices installed on
the cabinet door. No additional control connections are needed. However, it is possible to:
• control the unit through the control panel and the fieldbus
• read the status information through the control panel, fieldbus and relay output
• halt the unit with an externally wired emergency stop button (if the unit is equipped
with an emergency stop option).
The I/O control interface is mostly in internal use. RDCO-04C DDCS communication
option module is to be installed on the BCU control unit of the supply unit and the inverter
unit to enable communication between them.
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