Pilz PSS SB NOT, Basic license - Manual (Page 43)

6-1 Modular Block System: Emergency Stop Circuits
Standard Function Blocks
Guidelines for selecting standard function blocks
Several standard function blocks are available for the following safety
devices:
• E-STOP button
• Feedback loop
• Initialisation of the administration data blocks
The following information is designed to help you select the standard
function block that is most appropriate for your application.
Emergency stop monitoring
SB060 NA_KAT_2
SB060 is designed to monitor single-channel E-STOP buttons in
applications up to category 2.
The additional commands for monitoring the SSNR are required (A
DB015, I DW1015). Further information is available in Chapter 5, in the
section entitled “Input parameter SSNR”.
SB061 NA_1
SB061 is used in applications up to category 4. This standard function
block has no parameter to evaluate the status of I/O-Groups
(SafetyBUS p).
INFORMATION
Do not use SB061 in applications with SafetyBUS p.
SB061 cannot be used to monitor whether contacts switch synchronously
when releasing an E-STOP button that has been operated.
The additional commands for monitoring the SSNR are required
(A DB015, I DW1015). Further information is available in Chapter 5, in the
section entitled “Input parameter SSNR”.