Commissioning
CX2100-0004
21
Version: 1.2
5.2.2
Observe the UL requirements
The Embedded PCs CX20xx and the power supply unit CX2100-0004 are UL508 certified. The
corresponding UL label can be found on the type plate.
Fig. 7: UL label on the CX20xx.
The CX20xx Embedded PCs can thus be used in areas in which special UL requirements have to be met.
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.
