Appendices
A.3 Rated voltage for operation of the D4xx
Table A-2 Test voltages
Circuits with rated voltage Ue relative to other
circuits or ground
Test voltage
0 V < Ue ≤ 50 V 500 V DC
Safety class
Safety class I in accordance with IEC 536 (VDE 0106, Part 1), i.e. a protective-conductor
terminal is required on the mounting rail!
Protection against ingress of solid foreign bodies and water
IP 20 degree of protection in accordance with IEC 529, i. e. protection against contact with
standard probes.
Also: Protection against ingress of solid foreign bodies with diameters greater than 12.5 mm.
No special protection against ingress of water.
A.3 Rated voltage for operation of the D4xx
Rated voltage for operating the control unit
The control unit operates with a rated voltage. The following table contains the rated voltage
and the corresponding tolerance range.
Table A-3 Rated voltage for the control unit
Rated voltage Tolerance range
24 VDC 20.4 VDC to 28.8 VDC
D4xx
A-2 Manual, 12.2004, 6AU1900-1AJ32-0BA0
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