KBox C-103-CFL-x - User Guide, Rev. 1.0
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9/
Starting Up
The KBox C-103-CFL must be operated only with the nominal voltage of 24V DC of type SELV.
For details refer to the chapter 12/ “Technical Specifications”.
9.1.
Connecting to DC Main Power Supply
The DC input connector (Figure 11 and Figure 14 marked X101) is located on the front side of the KBox C-103-CFL. The
KBox C-103-CFL will be connected to a DC main power supply via the supplied Phoenix power plug terminal (see
Figure 53) and corresponding power wires (prepared as described in the subsection 8.3.1 “Cabling”).
Before using your system, become familiar with the system components and check that
everything is properly connected. Following a proper cabling procedure will prevent a false
power-on condition, which could result in unit operational failure.
When you install/disconnect the unit, the functional earth connection must always be made
first and disconnected last.
Also, it is recommended that the last connections attached to the system should be the
power wires!
The KBox C-103-CFL must be connected to a DC mains power supply complying with the
requirements of IEC 61010-1 and IEC 60950-1 standard or better. It must be observed that
wiring and short-circuit/overcurrent protection is performed according to the applicable
standards, regulations and respect to the electrical specification of the KBox C-103-CFL.
Even when the system is turned off via the power button (Figure 11 and Figure 15, marked
PWR) parts of the system are still energized.
The disconnecting device (fuse/circuit backer) rating must be in accordance with the wire
cross-section and the rated current of the KBox C-103-CFL.
The wires used for power connections must be clearly marked (+/-/functional earth) to
ensure that they will be proper connected to the DC IN connector of the KBox C-103-CFL and
to the main power source, corresponding to signals marked; refer to Figure 14 and Figure 53.
In addition, the cables must have some form of support so as to minimize the strain on the
unit’s connectors.
Only connect to an external power supply delivering the specified input rating and compling
with the requirements of Safety Extra Low Voltage (SELV) and Limited Power Source (L.P.S.)
of UL/IEC 60950-1 or (PS2) of UL/IEC 62368-1.
To connect the KBox C-103-CFL to a corresponding DC main power supply, please perform the following steps:
1.
Ensure that the DC power source is switched off via a disconnecting device (circuit breaker), in order to ensure
that no power is flowing from the external DC power source during the connection procedure.
2.
Connect at first the wire for “Functional Earth stud” (Figure 25, pos. 6) to an appropriate “common earth”
connection point.
3.
Connect the Phoenix power terminal prepared as described in the subsection 8.3.1 “Cabling” to the DC input
connector (Figure 11 and Figure 14 marked X101) of the KBox C-103-CFL. The DC input connector is located on the
front side and is marked “24VDC”.
