Siemens S7-300 - 10 Safety Protector; Introduction; Properties, Front View, and Block Diagram

Fail-safe signal modules
Installation and Operating Manual, 01/2010, A5E00085586-10
297
Safety protector
10
10.1 Introduction
Chapter contents
The safety protector is used to protect the F-SMs from any overvoltage developing in the
case of a fault/error. Information on safety protectors provided in this chapter:
● Properties
● Module view and block diagram
● Configuration variants
● Technical data
10.2 Properties, Front View, and Block Diagram
Order number
6ES7195-7KF00-0XA0
Properties
The safety protector protects the fail-safe signal modules against excess fault voltages.
The safety protector does not occupy an address or supply diagnostic messages, and is not
assigned in
STEP 7 .
Note
When the safety protector is used, your station achieves the limit values for
surge resistance
specified in the technical data using the overvoltage protection components specified in the
"S7-300 CPU 31xC and CPU 31x: Hardware and Installation
(http://support.automation.siemens.
com/WW/view/en/13008499
)" Operating Instructions only
if configured with
grounded reference potential.
If you install your station in a metal cabinet, you can configure the station with ungrounded or
grounded reference potential.
Safety Integrity Level SIL 3/Cat. 4/PLe with safety protector
For applications in Safety Integrity Level SIL3/Cat.4 read the warning in section "Rules for
using the safety protector" in the chapter "Configuration with F-SMs in Safety Mode
(Page 21)".