Pilz PSS SB FT, Basic license - Manual (Page 73)

Modular Block System: Burner Management 6-29
• GUAR: Global input of the monitor sequence
GUAR = 0: controlled shutdown when AuSt = 1, safety
shutdown when
AuSt = 0
GUAR = 1: monitor sequence is inactive: no error is present
• AirP: Air pressure monitor
AirP = 1: minimum air pressure is present
AirP = 0: air pressure is below the minimum
• CHAI: Global input of the safety sequence
CHAI = 0: safety shutdown
CHAI = 1: the safety equence is inactive: no error is present
• FLAs: Global input of the flame signals
FLAs = 0: fault lock-out
FLAs = 1: flame signlas are fault-free
• FTRY: FTRY = M110.01 (RLO =1): single attemptat a restart after a
flame error in operation (only possible if AuSt = 1)
FTRY = M110.00 (RLO =0): no option for automatic restart, a
fault lock-out occurs.
• RUN: The output parameter RUN from SB159 “Run” must be
supplied to this parameter, so information about the operating
status of the main flame can be obtained."
RUN = 1: operating position.
• D_C: Contains the number of cycles for the delayed enable of
SB152 after the PSS has started-up. The delayed enable is
required so that the flame monitors can reach a defined
position without a fault lock-out occurring.
Example: If the minimum scan time is 50 ms and the delayed
enable 5 s, the parameter
D_C must be assigned KB100
• AuSt: Automatic start (reset) when the PSS starts up
AuSt = M110.01 (RLO =1): automatic start (without reset) is
required after a controlled shutdown
AuSt = M110.00 (RLO =0): no automatic start required after a
controlled shutdown
• RSET: Reset button (N/O)