Siemens SIMATIC ET 200AL - Page 94

Technical specifications
10.5 Details on insulation, protection class, degree of protection and rated voltage
Distributed I/O system
92 System Manual, 02/2018, A5E31861578-AF
10.5
Details on insulation, protection class, degree of protection and
rated voltage
Insulation
The insulation is designed in compliance with the requirements of IEC 61010-2-201.
Note
Galvanic isolation with 707 V DC (Type Test) is tested
for modules with 24 V DC supply
voltage (SELV/PELV).
Pollution class according to IEC 61010-2-201
● Protection class III
Degree of protection IP65 and IP67
Degree of protection IP65 and IP67 according to IEC 60529 for all modules of the ET 200AL
distributed I/O system:
● 1. Code number: Dust-proof and complete protection from contact
● 2. Code number: Protection from water
– IP65: Protection from water jets from any angle
(The water may not have any damaging effect)
– IP67: Protection against temporary submersion
(The water must not enter the enclosure in harmful quantities)
Rated voltage for operation
The following table shows the rated voltage and the corresponding tolerance with which the
ET 200AL distributed I/O system operates.
Table 10- 10 Rated voltage for operation
Rated voltage (SELV/PELV)
Tolerance range
24 V DC
20.4 V to 28.8 V DC