Document Outline

• Operating Manual PSS Standard Function Blocks MBS Burner Management
• Preface
• Contents
• 1: Introduction
  • MBS Modular Block System
  • Categories / requirement classes
  • Overview of manual
  • Definition of symbols
  • Terminology
• 2: Overview
  • Software package
    • Operation
  • Range
• 3: Safety
  • Safety guidelines
    • Use of qualified personnel
    • Warranty and liability
    • Application guidelines
    • Standards
  • Fault detection
    • Feasibility test
    • Fault prevention
• 4: Intended Use
  • Application
  • System software
  • Intended use of the standard function blocks
    • SB149: Sequence control
    • SB150: Flame monitoring
    • SB151: Transient suppression
    • SB152: Burner: start and operator elements
    • SB153: Control and position monitoring of flaps
    • SB154: Control and position monitoring of valves
    • SB155: Pre-purge
    • SB156: Tightness control
    • SB157: Several ignition attempts
    • SB158: Ignition
    • SB159: Run
    • SB160: Blower
• 5: MBS Basics
  • Block design
    • Structure
    • Formal parameters and actual parameters
  • Administration data blocks DB015, DB016 and DB017
    • Structure of the administration data blocks
    • Blocks contained in the administration data blocks
  • Input parameter SSNR
    • Example
  • Fault diagnostics
    • Error types
    • Fault diagnostics using the administration data blocks
  • Temporary flag range in MBS blocks
  • Output parameter ENBL
  • Assignment of input and output parameters
  • Minimum scan time
  • Global parameters
• 6: Standard Function Blocks
  • SB149: Sequence control
    • Block header
    • Input parameters
    • Output parameters
    • Function
    • Error messages
    • Blocks required
    • Programming guidelines
    • Timing diagrams
      • Setting / resetting the step without time delay and monitoring time
      • Setting/resetting the step with time delay but without monitoring time
      • Setting/resetting the step without time delay but with monitoring time
      • Setting/resetting the step with time delay and monitoring time
  • SB150: Flame monitoring
    • Block header
    • Input parameters
    • Output parameters
    • Function
    • Error messages
    • Blocks required
    • Programming guidelines
    • Timing diagrams
      • Signal cycle with an uninterrupted burner start-up or uninterrupted burner stop sequence
      • Flame monitor error
      • Spurious signals when monitoring for “flame not established”
      • Spurious signals before and during monitoring for “flame established”
      • Spurious signals during monitoring for “flame established”
  • SB151: Transient suppression
    • Block header
    • Input parameters
    • Output parameters
    • Function
    • Error messages
    • Blocks required
    • Programming guidelines
    • Timing diagrams
      • Setting the ENBL output automatically when the signal is recovered
      • Setting the ENBL output after a reset when the signal is recovered
      • Spurious signal sequence at BASE input
      • Spurious signal sequence at AuSt input
  • SB152: Burner: start and operator elements
    • Block header
    • Input parameters
    • Output parameters
    • Function
    • Error messages
    • Blocks required
    • Programming guidelines
    • Timing diagrams
      • Burner start-up without automatic start after a controlled shutdown
      • Failure of safety sequence, flame monitor sequence and general faults
      • Failure of monitor sequence
      • Monitoring of air pressure
      • Restart after flame failure or flame monitoring fault
      • Automatic restart after air deficiency
      • Spurious signals
  • SB153: Control and position monitoring of flaps
    • Block header
    • Input parameters
    • Output parameters
    • Function
    • Error messages
    • Blocks required
    • Programming guidelines
    • Timing diagrams
      • No automatic start after controlled shutdown
      • Monitoring of end positions
      • Missing acknowledgement
      • Multiple drive commands
      • Spurious fault signal reset
      • Test to ensure safe monitoring time
  • SB154: Control and position monitoring of valves
    • Block header
    • Input parameters
    • Output parameters
    • Function
    • Error messages
    • Blocks required
    • Programming guidelines
    • Timing diagrams
      • Valve closed without power
      • Reset spurious acknowledgements
      • Spurious acknowledgement as valve opens
      • SImultaneous OPEN and CLOSE commands
      • Multiple recurring OPEN and CLOSE commands
  • SB155: Pre-purge
    • Block header
    • Input parameters
    • Output parameters
    • Function
    • Error messages
    • Blocks required
    • Programming guidelines
    • Timing diagrams
      • Signal cycle with interrupted and uninterrupted pre-purge process
      • Spurious signal sequence at NEXT and RDY inputs
  • SB156: Tightness control
    • Block header
    • Input parameters
    • Output parameters
    • Function
    • Error messages
    • Blocks required
    • Programming guidelines
    • Timing diagrams
      • Signal cycle of uninterrupted tightness control on a plant with an exhaust valve
      • Signal cycle of uninterrupted tightness control on a plant without an exhaust valve
      • Loss of minimum pressure signal as valve VAV1 is incorrectly seated
      • Loss of maximum pressure signal as valve VAV3 or VAV4 is incorrectly seated
      • Enable and cancel tightness control via SyOK
      • Spurious, undefined NEXT input combinations
  • SB157: Several ignition attempts
    • Block header
    • Input parameters
    • Output parameters
    • Function
    • Error messages
    • Blocks required
    • Programming guidelines
    • Timing diagrams
      • Counting ignition attempts where time is not exceeded
      • Counting ignition attempts where time is exceeded
      • Successful ignition after first attempt failed
      • Spurious signals
  • SB158: Ignition
    • Block header
    • Input parameters
    • Output parameters
    • Function
    • Error messages
    • Blocks required
    • Programming guidelines
    • Timing diagrams
      • Automatic ignition cycle when no parameters are set for manual ignition
      • Automatic ignition cycle when parameters are set for manual ignition
      • Spurious signals at NEXT input
      • Failure of SyOK in all NEXT steps
      • Spurious signals at MANU and S_IG inputs
      • Error analysis during manual ignition start-up
  • SB159: Run
    • Block header
    • Input parameters
    • Output parameters
    • Function
    • Error messages
    • Blocks required
    • Programming guidelines
    • Timing diagrams
      • Uninterrupted burner start-up or uninterrupted burner stop sequence
      • Failure of SyOK in all NEXT steps
      • Spurious signals at NEXT input
  • SB160: Blower
    • Block header
    • Input parameters
    • Output parameters
    • Function
    • Error messages
    • Blocks required
    • Programming guidelines
      • Uninterrupted blower control
      • Spurious, conflicting control signals
  • Connections required between the SBs
  • Sequence for calling SBs
• 7: Link Blocks
  • Check list
• 8: Examples
  • Application and parameters of individual blocks
  • Managing enables
  • Using step monitoring time W_E of SB149
    • W_E as ignition ready time
  • Using delay time D_E on SB149
    • Executing a function during D_E
      • D_E as pre-purge time
    • Executing a function after D_E
      • Delayed shutdown of blower
      • Building-up minimum air pressure
  • Driving the air flaps
  • Nesting of step sequences
• 9: Appendix
  • Assignment table: Category « Requirement class
  • Standard function blocks: current versions
  • Changes to the standard function blocks
    • SB 149: Sequence control
    • SB151: Transient suppression
    • SB152: Burner: start and operator elements
    • SB 153: Control and position monitoring of flaps
    • SB 154: Control and position monitoring of valves
    • SB 155: Pre-purge
    • SB156: Tightness control
    • SB 157: Several ignition attempts
  • Changes to the operating manual
• Contact address