PROFIsafe
Contents of this chapter
This chapter describes the safety system when the FSPS-21 module is communicating with
a safety PLC using the PROFIsafe profile of PROFINET. It describes the module states and
transitions and the contents of the PROFIsafe messages. The chapter also includes
installation instructions, configuration instructions for the ABB AC500-S Safety PLC and
Siemens SIMATIC Fail-safe S7 PLC, as well as fault tracing tips.
Introduction
When the drive is controlled from a safety PLC, the reliability of the fieldbus communication
must be secured. This can be done with the PROFIsafe technology. The PROFIsafe
technology includes several safety measures to minimize the effect of various transmission
errors that can occur when messages are transferred in a complex network.
PROFIsafe is an application layer (protocol) that describes the safety communication between
fail-safe devices. It is an additional layer on top of the standard PROFIBUS and PROFINET
protocols.
There are two versions of the PROFIsafe protocol:
• V1 can only be used with PROFIBUS
• V2 can be used with PROFIBUS and PROFINET.
The FSPS-21 module supports version V2 with PROFINET.
The PROFIsafe protocol can be used for safety applications up to SIL 3 according to IEC
61508 / IEC 62061, Category 4 according to EN 954-1 or PL e according to ISO 13849-1.
For more information on PROFIsafe and PROFINET, and for full PROFIsafe profile
(PROFIsafe - Profile for Safety Technology on PROFIBUS DP and PROFINET IO), see
www.profibus.com/.
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