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Safety functions module

 

Smart safety solution in your ACS880 industrial and machinery drive

As the level of automation in factories continues to grow, so does the importance of machine safety in industrial applications involving drives and motors. When safety is designed properly it brings sound economic advantages, such as increased productivity and minimum downtime without generating additional risks. 

The optional safety functions module (FSO-12 and FSO-21) provides an easy way to extend safety functions in the ACS880 series drives. This plug-in module is installed and cabled inside the drive, enabling different safety functions and diagnostics in one compact and reliable module. Depending on your needs ABB offers an encoderless variant of the safety functions module (FSO-12) with six safety functions in it. There is also a safety functions module (FSO-21) available that offers eight safety functions enabling the use of encoder feedback (FSE-31). The FSO-21 includes the same safety functions as the FSO-12, but offers two additional safety functions for your drive.

You can enable PROFIsafe over PROFINET connectivity, between your ACS880 drive and the safety PLC by adding the FENA-21 fieldbus adapter module to your drive. This way you will have a more flexible safety solution with the possibility to add safely-limited speed (SLS) to your application while it is in use.

Both safety functions modules have SIL 3/PL e capability and conforms to European Union Machinery Directive 2006/42/EC. The safety functions modules are TÜV Nord certified.

Selection and configuration of the safety functions is done using the Drive composer pro PC tool. Functions that are included in safety functions module are:

Inside the FSO-12 and FSO-21: 

  • Safe stop 1 (SS1) 
  • Safe stop emergency (SSE) 
  • Safe brake control (SBC) 
  • Safely-limited speed (SLS) 
  • Safe maximum speed (SMS) 
  • Prevention of unexpected startup (POUS)

Prevention of unexpected start-up can be realized using FSO-12

Additional safety functions inside only the FSO-21:

  • Safe direction (SDI), requires the pulse encoder interface module FSE-31
  • Safe speed monitor (SSM)
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