4 Design
C232-302-401/402/403/404-603 / C232/EN M/A23 4-1
4 Design
The C232 is mounted in an aluminum case. Connection is via threaded terminal ends.
The case is suitable for either wall-surface mounting or flush panel-mounting. The
mounting brackets adjust for flush mounting.
Figures 4-1 and 4-2 show the case dimensions and mounting dimensions. A cover
frame is supplied for flush mounting (see Installation and Connection).
Regardless of model, the C232 - like all other device types in the MiCOM Px30 system -
is equipped with the standard local control panel. The local control panel is covered with
a tough film so that the specified degree of protection will be maintained. In addition to
the essential control and display elements, a parallel display consisting of a total of 13
LED indicators is also incorporated into the local control panel. The meaning of the
various LED indications is shown in plain text on a label strip. The label strip is located
in a pocket accessible from the rear of the front panel. It can be replaced by user-
specific labels.
The components located behind the front panel are energized. Therefore always turn off
the supply voltage before opening the device.
The processor module with the local control module is attached to the reverse side of the
removable front plate and connected to the combined I/O module via a ribbon cable.
The I/O module incorporates the power supply, the optional input transformers, the
output relays and optical couplers for binary input signals.
The secondary circuit of operating current transformers must not
be opened. If the
secondary circuit of an operating current transformer is opened, there is the danger that
resulting voltages may injure personnel or damage the insulation.
The threaded terminal block for current transformer connection is not
a shorting block.
Therefore always short-circuit the current transformer before loosening the threaded
terminals.
The front panel houses the -X6 serial interface for parameter setting by way of a PC.
The optional communication interfaces (X7, X8 and X9 or X10) are located on the
underside of the case.
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