Mounting and wiring
CX2100-0914 Power Supply:
UL requirements
DANGER
Compliance of the UL requirements
For the compliance of the UL requirements the CX-Controllers should only be supplied by a
24 VDC supply voltage, supplied by an isolating source and protected by means of a fuse
(in accordance with UL248), rated maximum 4 Amp.by a 24 VDC power source, that has to
satisfy NEC class 2. A NEC class 2 power supply shall not be connected in series or paral-
lel with another (class 2) power source!This UL requirements are valid for all supply volt-
ages of the CX-Controllers!
DANGER
Compliance of the UL requirements
To meet the UL requirements, the CX-Controllers must not be connected to unlimited
power sources!
Requirements for the 24V power supply
In order to guarantee the operation of the CPU (CX20x0 module) and the terminal strand in all cases, the
power supply must supply 4 A at 24 V.
CX2100-09x4 33Version: 1.3
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