Specifications For Nominal Line Voltages, Isolation Tests, Protection Class, And Type Of Protection - Siemens SIMATIC ET 200S Installation And Operating Manual

General technical specifications

6.6 Specifications for Nominal Line Voltages, Isolation Tests, Protection Class, and Type of Protection

6.6 Specifications for Nominal Line Voltages, Isolation Tests, Protection
6.6
Class, and Type of Protection
Nominal Line Voltages for Operation
The fail-safe modules operate with the nominal line voltage 24 VDC. The tolerance range is
2.0 VDC to 28.8 VDC.
Test voltages
Isolation stability is proven in routine testing with the following test voltages in accordance
with IEC 61131 Part 2:
Circuits with Nominal Line Voltage U
against the Ground
0 V < U
Protection class
Protection class I in accordance with IEC 60536 (VDE 0106, Part 1), i.e., ground terminal
required on DIN rail!
Type of Protection
Type of protection IP20 according to EN 60529 for all fail-safe modules, in other words:
• Protection from contact with standard probes.
• Protection from foreign bodies larger than 12.5 mm in diameter is applicable.
• No special protection against water.
6-14
≤ 50 V
e
against Other Circuits and
e
ET 200S Distributed I/O System - Fail-Safe Modules
Hardware Installation and Operating Manual, 07/2005, A5E00103686-04
Test Voltage
500 VDC