Pilz PSS SB FT, Basic license - Manual (Page 84)

6-40 Modular Block System: Burner Management
Standard Function Blocks
SB153: Control and position monitoring of flaps
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 is present
• C!: Limit switch (N/O contact “flap closed”)
C! = 1: the flap is closed and operated via the limit switch
C! = 0: limit switch not operated
• O!: Limit switch (N/O contact “flap open”)
O! = 1: the flap is opened and operated via the limit switch
O! = 0: limit switch not operated
• DirO: Drive direction
positive edge from
DirO: flap should be opened (output OPEN
= 1, until the limit switch O! is achieved)
• DirC: Drive direction
positive edge from
DirC: flap should be closed (output CLOS
= 1)
• T_V: Switch time for the position change,
Permitted value range: 1 ... 32767,
multiplying the value with the fixed time base of
50 ms gives a time range from 50 ms ... 27.3 min.
SB153
FLAP
B - SSNR
X - C!
X - O!
X - DirO
X - DirC
W - T_V
Z - T
X - RSET
ENBL - X
OPEN - X
CLOS - X