Pilz PSS SB FT, Basic license - Manual (Page 152)

6-108 Modular Block System: Burner Management
Standard Function Blocks
SB160: Blower
Block header
Input parameters
• SSNR: Safety subroutine number
Permitted value range: 1 ... 200
Format: Byte-constants KB001 ... KB200
(further information about the
SSNR can be found in the
sections “Administration data blocks DB015, DB016 and
DB017” and “Input parameter SSNR” in chapter 5).
Value of DW0000/DB015 = 0: no error present
• NEXT: Switch off blower by the sequence (step “Blower overrun time")
NEXT = 1: the overrun time has elapsed, the output parameter
BLOW is reset and the blower switched off.
• STRT: Start input to switch on the blower
positive edge of
STRT: switch-on
• STOP: Stop input to switch off the blower directly
positive edge of
STOP: switch off
Output parameters
• RDY: RDY = 1: the step “Blower switched off after the overrun time”
ended, the sequence continues
• BLOW: Blower enable
BLOW = 1: switch on blower
SB160
SB160
BLOWER
B - SSNR
X - NEXT
X - STRT
X - STOP BLOW - X
RDY - X