Pilz PSS SB FT, Basic license - Manual (Page 27)

4-3 Modular Block System: Burner Management
SB152: Burner: start and operator elements
SB152 is used to control the burner start and monitor the burner.
Use SB152 to:
• Carry out a delayed start after the controller has started
• Carry out a restart after a controlled shutdown
• Evaluate the reset, start and stop button
• Monitor the air pressure monitor
• Monitor the flames (pilot and main flame)
• Monitor the global messages from the error, monitor and safety
sequences and to carry out a controlled shutdown or safety lockout.
If the safety sequence is interrupted, the error must always be rectified,
followed by a manual reset via the reset button (
RSET) and start button
( STRT). The block enable ENBL will only be issued when the safety
sequence is no longer interrupted. .
NOTICE
Error reaction is the sole responsibility of the user. All safety-related
aspects must be taken into account when selecting the elements for the
error and safety sequences!
SB153: Control and position monitoring of flaps
SB153 monitors the status of a flap. It opens and closes the flap after the
corresponding input prompt, monitors the direction of a positional change
and checks the reaction time.
The contact bounce time lasts for one cycle, if a change in position occurs.