Pilz PSS SB NOT, Basic license - Manual (Page 70)

6-28 Modular Block System: Emergency Stop Circuits
Standard Function Blocks SB067
SB067: Feedback loop monitoring
Block header
Input parameters
• SSNR: Safety subroutine number
Permitted value range: 1 ... 200
Format: Byte constants KB001 ... KB200
(see sections in Chapter 5 entitled “Administration data blocks
DB015, DB016 and DB017” and “Input parameter SSNR”).
• RFK1: Feedback loop N/C contact on contactor 1
• RFK2: Feedback loop N/C contact on contactor 2
• RSET: Reset input
RSET = 0/1 signal edge: Trigger reset
• Ein: Switches on main contactor via output parameter K
Ein = 0/1-signal edge: Switch on output parameter K (K = 1)
Ein = 1/0-signal edge: Switch off output parameter K (K = 0)
Input circuitry
If you are only using one feedback loop, connect the RFK input to
RFK1
and RFK2.
Output parameters
• FG: Enable bit
FG = 0: Not enabled
FG = 1: No error found on this relay block function
• K: Output to main contactor
SB 067
RFK_K4
B - SSNR
X - RFK1
X - RFK2
X - RSET
X - Ein FG - X
K
- X