Pilz PSS SB FT, Basic license - Manual (Page 181)

8-17 Modular Block System: Burner Management
SB149
STEP
RDY NEXT
COND W_E
STEP D_E
W_BA
W_V
W_T
D_BA
D_V
D_T
&
SB149
STEP
RDY NEXT
COND W_E
STEP D_E
W_BA
W_V
W_T
D_BA
D_V
D_T
&
SB149
STEP
RDY NEXT
COND W_E
STEP D_E
W_BA
W_V
W_T
D_BA
D_V
D_T
&
SB149
STEP
RDY NEXT
COND W_E
STEP D_E
W_BA
W_V
W_T
D_BA
D_V
D_T
&
SB149
STEP
RDY NEXT
COND W_E
STEP D_E
W_BA
W_V
W_T
D_BA
D_V
D_T
&
SB156
TIGHT_C
SSNR ENBL
NEXT RDY
SyOK VAV1
V4? VAV3
P+ VAV4
P- GP+
T_V GP-
T
SB155
PREPURGE
SSNR ENBL
NEXT RDY
COND
R - NEXT
Step [m,1]
Next
Step
SB149
STEP
RDY NEXT
COND W_E
STEP D_E
W_BA
W_V
W_T
D_BA
D_V
D_T
&
NEXT from
previous
step
Step [n,1]
Step [n,2]
Step [n,7]
Step [m,1]
Bit 0 [input parameter: NEXT SB156]
Bit 4
[NEXT SB156]
Bit 0 [RDY SB156]
Pre-purge
time
Test ways
emptying time
Time for air
pressure test
Step [n,3]
Bit 1
[NEXTSB156]
Step [n,6]
Tightness
monitoring
ended
Pre-purge time
has elapsed Pre-purge
taking place
or ran
fault-free
Bit 3 [RDY SB156]
Bit 1 to 2
[RDY SB156]
Bit 4 [RDY SB156]
... Further steps for the
tightness monitoring
Bit 2 to 3
[NEXT SB156]
Byte RDY Byte NEXT
Tightness Control-SB
Pre-purge-SB