Kontron KBox C-101 - Manual (Page 43)

12. Starting Up KBox C-101 – User’s Guide (Version 2.00)
12.
Starting Up
The KBox C-101 must be only operated with the nominal voltage of 24V DC of type SELV. For details refer
to the chapter 16 “Technical Specification”.
12.1. Connecting to DC Main Power Supply
The DC input connector (Fig. 10 and Fig. 12 marked X101) is located on the front side of the KBox C-101. The KBox C-101
will be connected to a DC main power supply via the supplied Phoenix power plug terminal (see Fig. 36) and
corresponding power wires (not included).
Before using your system, become familiar with the system components and check that everything is
connected properly. 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-101 must be connected DC mains power supply complying with the SELV (Safety Extra Low
Voltage) requirements of EN 60950-1 standard. 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-101.
Even when the system is turned off via the power button (Fig. 10 and Fig. 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-101.
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-101 and to the main power source,
corresponding to signals marked. Refer to Fig. 12 and Fig. 36.
In addition, the cables must have some form of support so as to minimize the strain on the unit’s
connectors.
To connect the KBox C-101 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” (Fig. 26, pos. 6) to an appropriate “common earth” connection
point.
3. Connect the Phoenix power terminal prepared as described in the subsection 11.1.1 “Cabling” to the DC input
connector (Fig. 10 and Fig. 12 marked X101) of the KBox C-101. The DC input connector is located on the front side
and is marked “24VDC”.
4. Connect the other ends of the DC power wires to the connections of the DC main power supply. Pay attention to the
polarity of the connections.
5. Switch on the disconnecting device (circuit breaker) in order to apply voltage to the terminals of the power wires.
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