Electromagnetic Compatibility - Siemens SIMATIC S7-400 Reference Manual

General specifications

1.2 Electromagnetic compatibility

1.2 Electromagnetic compatibility
Introduction
This section provides details of the immunity of S7-400 modules and information on RFI
suppression.
All components of the S7-400 automation system meet the requirement of the standards
applicable in Europe provided the system is installed in accordance with all applicable
regulations (see
"EMC" definition
Electromagnetic compatibility (EMC) is the ability of an electrical device or system to operate
satisfactorily in its electromagnetic environment without affecting that environment.
Personal injury or property damage can result.
Installing expansions that are not approved for the S7-400 can breach the requirements and
regulations governing safety and electromagnetic compatibility.
Only use expansions that are approved for the system.
Pulse-shaped interference
The table below shows the electromagnetic compatibility of the modules with pulse shaped
interference. The system S7-400 system must meet the requirements and guidelines for
electrical assembly.
Table 1-3
Electrostatic discharge
in accordance with IEC 61000-4-2
Burst (electrical fast transient) in accord‐
ance with IEC 61000-4-4
20
Installation manual, sections 2 and 4 ).
WARNING
Pulse-shaped interference
Pulse-shaped interference Test voltage
Air discharge:
Contact discharge:
2 kV (power supply line)
2 kV (signal line >30 m)
1 kV (signal line <30 m)
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08
Corresponds to
immunity test lev‐
el
±8 kV 3
±6 kV
3