Siemens 6ES7153-1AA03-0XB0 - Page 51

Assignment planning
3.6 Configuring the electrical structure
ET 200M
Operating Instructions, 04/2022, EWA-4NEB7806006-09
51
Components and safety measures
Different components and safety measures are prescribed for setting up a complete plant.
The nature of the components and the degree of credibility of the safety measures depends
on which DIN VDE directive applies to your unit configuration. The following table refers to
the two following figures.
Table 3- 4 DIN VDE-directives for the configuration of a controller
Comparisons ... Reference to
figure
DIN VDE 0100 DIN VDE 0113
Switch-off organ for control-
lers, signal sensors and final
control elements
(1)
… part 460:
Main switch
… part 1:
Separator
Short-circuit and overload
protection:
in groups for signal sensors
and final control elements
(2)
… part 725:
Single-pole protection
of the circuit
… part 1:
• with grounded second-
ary power circuit:
single-pole protection
• otherwise: all-pole
protection
Load power supply for AC load
circuits with more than five
electromagnetic apparatus
(3)
metallic isolation with
transformers recom-
mended
metallic isolation with
transformers required
Properties of load power supplies
The load power supply supplies input and output circuits (load circuits) as well as sensors and
actuators. The following lists the properties of load power supplies that are required in special
application cases.
Properties of load power sup-
ply
required for ... Remarks
Safer (electrical) isolation
Modules that must be supplied
with voltages ≤ DC 60 V or
≤ AC 25 V
The power supplies PS 307 as
well as the Siemens load power
supplies of the 6EP1 series have
this property.
24 V DC load power supply
Tolerances of the output volt-
age:
In the case of considerable une-
venness of the output voltage,
we recommend using a support-
ing capacitor. Measurement:
200 µF per 1 A load current
(with bridge rectification).
20.4 V to 28.8 V
24 V DC load power supply
40.8 V to 57.6 V
48 V DC load power supply
51 V to 72 V
60 V DC load power supply
Rule: ground the load circuits
The load circuits should be grounded.
A perfect functioning security is given on account of the mutual reference potential (ground).
On the load power supply (terminals L or M) or on the isolation transformer provide a
disconnectable connection to the grounding wire (position ④ in the following figure). In the
event of faults in the energy distribution, this measure makes it easier for you to localize
contacts to earth.