Pilz PSS SB FT, Basic license - Manual (Page 159)

Modular Block System: Burner Management 6-115
Block Connection required Reason
SB159 ENBL (SB152)
→
Valve lock when a
SyOK (SB159) shutdown occurs
RUN (SB159)
→
For main flame
RUN (SB150, SB152) monitoring
FLAM (SB159) ® For main flame
MONI (SB150) monitoring
Triggered pulse via neg. edge Fault leads to a controlled
form
ENBL (SB159) shutdown (when AuSt = 1
→
AND-connection before with restart)
ERR (SB152)
or
Triggered pulse via neg. edge Fault leads to a safety
from
ENBL (SB159) shutdown
→
AND-connection before
CHAI (SB152)
Sequence for calling SBs
NOTICE
To avoid errors, always keep to the following sequence when calling up
the SBs:
- SB157: as the first block to be called up in a sequence, i.e. before all
SB149 blocks
- SB158: call up SB158 before calling up one or more SB150 blocks
for flame monitoring
- SB159: call up SB159 before calling up one or more SB150 blocks
for flame monitoring
- SB152: call up SB152 after all other blocks have been called up