Siemens SIMATIC ET 200AL System Manual page 202

9.5 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
For modules with 24 V DC supply voltage (SELV/PELV), electrical isolations are tested with
707 V DC (type test).
Protection class according to IEC 61010-2-201
• Protection class III
Degree of severity for direct current-supplied equipment
The IO-Link I/O devices fulfill severity class PS1.
Pollution degree / overvoltage category according to IEC 61131
• Pollution degree 3
• Overvoltage category: II
Degree of protection IP65 and IP67
Degree of protection IP65 and IP67 according to IEC 60529 for all ET 200AL IO-Link I/O
modules:
• 1. Code number: Dust-proof and complete protection from contact
• 2. Code number: Protection from water
– IP65: Protection from water jets from any angle
– IP67: Protection against temporary immersion
Rated voltage for operation
The following table shows the rated voltage and the corresponding tolerance with which the
ET 200AL IO-Link I/O modules operate.
Table 9- 9
Rated voltage (SELV/PELV)
1L+
2L+
IO-Link I/O modules
System Manual, 08/2021, A5E48755395-AB
9.5 Details on insulation, protection class, degree of protection and rated voltage
The water must not have any damaging effect.
The water must not enter the enclosure in harmful quantities.
Rated voltage for operation
Technical specifications
Tolerance range
18 ... 30 V DC
20.4 ... 28.8 V DC
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