Wiring loads/actuators
6.2 Wiring loads/actuators
Analog value processing
Function Manual, 06/2014, A5E03461439-AC
105
Reference potential for analog output modules without M
ANA
connection
Analog output modules have no galvanic connection between the reference potential of the
analog output circuits and central ground.
Always verify that the maximum potential difference U
ISO
between the reference points of the
analog output circuits and the central ground is not exceeded.
Potential difference U
ISO
may be caused by: Maximum line lengths exceeded.
If you want to ensure the maximum value U
ISO
is not exceeded, interconnect each analog
output circuit with the central ground using an equipotential bonding cable.
①
Load on the voltage output
②
Equipotential bonding cable
③
Grounding bus cable
④
Central ground
Figure 6-2
Example: Reference potential for an analog output module without M
ANA
connection
Summary of Contents for SIMATIC ET 200AL
Page 2: ......
Page 143: ......
Page 218: ......
Page 250: ......
Page 296: ......
Page 337: ......
Page 365: ......
Page 392: ......
Page 419: ......
Page 451: ......
Page 483: ......
Page 597: ......
Page 648: ......
Page 702: ......
Page 739: ......
Page 781: ......
Page 804: ......
Page 828: ......
Page 853: ......
Page 880: ......
Page 906: ......
Page 996: ...Diagnostics ...
Page 1121: ......
Page 1565: ......