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10. Starting Up
10. Starting Up
10.1. Connecting to Power
The DC power socket is located on the front side of the system.
The rated voltage range of the mains supply must correspond to the value on the type label.
The V Panel Express systems can optionally be connected to an AC power source or to a DC power source.
❏ Before using your system, you should first 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.
❏ Also, it is recommended that the last cable attached to the system should be the power cable!
10.1.1. DC Connection
The device must be connected only to a LPS (Limited Power Supply) DC mains power supply complying
with the requirements of EN 60950-1.
It must be ensured that the system can be powered ON and OFF via a readily accessible two-pole
disconnecting device that shall be incorporated in the building installation wiring. It must be UL-listed
and correspond to the required current and voltage for the V Panel Express (refer to the type label).
The unit is only completely disconnected from the DC power source, when the DC power cord is
disconnected either from the power source or the unit. Therefore, the DC power cord and its connectors
must always remain easily accessible.
For the DC connection please prepare the connecting wires with the provided Phoenix terminal.
The length of the DC connecting wires may not exceed 3m.
Strip and twist the connecting wire-ends but do not tin it with solder. The minimum cross section of the
wires for power connection is 1mm
1. Loosen enough the two slotted screws of the provided Phoenix terminal, so that you can insert the ends of the
connecting wires. Pay attention to the polarity of the connections (refer to Fig. 32).
2. Tighten the slotted screw firmly.
3. The second end of each wire will be prepared as required for the connection to the DC power source.
4. Ensure that the DC power source is switched off via a two-pole disconnecting device (UL listed), in order to ensure
that no power is flowing from the external DC power source during the connection procedure.
5. Connect V Panel Express to the DC power source.
6. Switch on the isolating switch (disconnecting device) in order to apply voltage to the terminals of the power source
(cable wires).
Fig. 31: DC-connector (without Phoenix plug terminal)
34
2
(AWG 18).
Fig. 32: DC-Phoenix plug terminal (AWG 18)
V Panel Express – User's Guide (V1.01)
www.kontron.com
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