Siemens SIMATIC ET 200AL - Page 90

Technical specifications
10.2 Electromagnetic compatibility
Distributed I/O system
88 System Manual, 02/2018, A5E31861578-AF
10.2
Electromagnetic compatibility
Definition
Electromagnetic compatibility is the ability of an electrical apparatus to function in a
satisfactory manner in its electromagnetic environment without affecting this environment.
An I/O device of the ET 200AL distributed I/O system fulfills the requirements of the EMC law
of the European Union. The requirement for this is that an I/O device of the ET 200AL
distributed I/O system meets the specifications and guidelines for electrical configuration.
Pulse-shaped disturbance variables
The table below shows the electromagnetic compatibility of the distributed I/O systems
compared to pulse-shaped disturbance variables.
Table 10- 1 Pulse-shaped disturbance variables
Pulse-shaped disturbance variable
Tested with
Corresponds to
degree of sever-
ity
Electrostatic discharge according to
IEC 61000-4-2.
Air discharge: ±8 kV
3
Contact discharge: ±4 kV 2
Burst pulses (rapid transient disturb-
ance values) according to IEC 61000-
4-4.
±2 kV (power supply cable)
3
±2 kV (PROFIBUS-/PROFINET line) 4
±1 kV (signal line <30 m)
3
±1 kV (ET-Connection)
3
High-energy surge according to IEC 61000-4-5.
• Asymmetrical coupling
±2 kV (24 V DC supply cable)
with protective element
3
±0.5 kV (24 V DC supply cable)
without protective element
1
±2 kV (PROFIBUS/PROFINET line)
without protective element
3
• Symmetrical coupling
±1 kV (24 V DC supply cable)
with protective element
3
±0.5 kV (24 V DC supply cable)
without protective element
2