Pilz PSS SB FT, Basic license - Manual (Page 106)

6-62 Modular Block System: Burner Management
Standard Function Blocks
Exhaust valve
VAV4
Safety valve
VAV1
Burner
chamber
Main valve
VAV3
P+ P-
Gas pressure
monitor Air pressure
monitor
Error messages
Any fault that is detected will be stored statically in the corresponding error
data word (SSNR) of DB015 (1st data block).
• Error messages in DB015
- Bit 00: Non-defined step called up:
safety shutdown is carried out.
Remedy: Only choose permitted values for the input parameter
NEXT (only one of the bits 0 to 4 may be set), press the reset
button and then the start button
- Bit 01: Safety valve VAV1 not seated:
safety shutdown is carried out
Remedy: Check the safety valve, press the reset button and
then the start button.
- Bit 02: Main valve VAV3 or the exhaust valve VAV4 (if present) not
seated: safety shutdown is carried out.
Remedy: Check the main valve and/or exhaust valve, press the
reset button and then the start button.
- Bit 03: Period of time for seal monitoring is exceeded:
safety shutdown is carried out.
Remedy: Press the reset button first and then the start button.
SB156