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Commissioning
CX20x0
43
Version: 2.5
Fig. 25: UL label for CX20x0.
The Embedded PCs CX20x0 can thus be used in areas in which special UL requirements have to be met.
These requirements apply to the system voltage (Us) and the power contacts (Up). Applications without
special UL requirements are not affected by UL regulations.
UL requirements:
• The Embedded PCs must not be connected to unlimited voltage sources.
• Embedded PCs may only be supplied from a 24 V DC voltage source. The voltage source must be
insulated and protected with a fuse of maximum 4 A (corresponding to UL248).
• Or the power supply must originate from a voltage source that corresponds to NEC class 2. An NEC
class 2 voltage source must not be connected in series or parallel with another NEC class 2 voltage
source.
Fig. 26: Connection example for areas with special UL requirements.
6.4
Switching on
Please ensure that the Embedded PC is fully configured before switching on the Embedded PC.
Switch on the Embedded PC as follows:
1. Ensure that all extension, system and fieldbus modules are connected correctly.
2. Check whether the right CX2100 power supply unit and the right installation position were selected.
3. Check whether the Embedded PC is mounted securely on the DIN rail and all required Bus Terminals
are connected.
4. Only then switch on the power supply for the power supply unit.
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The Embedded PC starts automatically when the external power supply is switched on. The pre-installed
operating system is started and all connected extension, system and fieldbus modules are configured.
Содержание CX20 0 Series
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