Siemens SIMATIC Operating Instructions Manual page 139

Protection against Overvoltage
Protection of supply voltage 1L+ and 2L+ from
surge in accordance with IEC 61000-4-5 with
external protection elements only
•
•
Protection of inputs from surge in accordance
with IEC 61000-4-5 with external protection
elements only
•
•
Protection of supply voltage 1L+ from
overvoltages
*: Identification sets are described in the "ET200 pro Distributed I/O System" manual.
**: For requirements for sensors and actuators, see "
ET 200pro Distributed I/O System - Fail-Safe Modules
Operating Instructions, 05/2007, A5E00394073-02
Symmetrical (L+ to M)
Asymmetrical (L+ to PE, M to PE)
Symmetrical (L+ to M)
Asymmetrical (L+ to PE, M to PE)
8.3 F -Switch PROFIsafe Digital Electronic Module
Technical Specifications
+ 1 kV; 1.2/50 μs
+ 2 kV; 1.2/50 μs
+1 kV; 1.2/50 μs
+2 kV; 1.2/50 μs
Internal fuse tripped
Requirements for Sensors and Actuators
Fail-Safe Electronic Modules
"
139