67
8
Control
Mode
Specification of the burner sequencer function "Standby Mode"
Fig. 8-6 Sequence at oil operation
The sequencer is now in stand-by mode with active ignition flame. Ignition position acknowl-
edgement must apply all the time.
As soon as one of the following incidences happen, the parameterised ignition sequence of
the fuel is executed without switching on the ignition transformer:
–
boiler pressure or boiler temperature have lapsed to that point, where the burner would
start again (with internal firing-rate controller)
–
as soon as the LSB contact (terminal 1) opens again
–
as soon as the command is transferred via fieldbus
This may occur after leakage test, before operation, with fuel gas and without the transformer
leading time (analogue changing via pilot burner
ignite the new fuel)
WARNING!
At combustion plants with just one flame detector, you have to ensure, that the main flame is
always ignited by the pilot flame. Otherwise You have to use one flame detector for the main
flame and one for the pilot flame.
If the "Burner on" signal will be removed during stand-by mode, the ETAMATIC switches off.
This shut-off proceeds like a shut-off out of the mode base load/control mode with all it’s pa-
rameterised procedures.
In oil operation the output for the oil pump stays active.
LSB module address 31 input 1
WARNING!
Since it's not sure how long the standby mode applies, a separate ignition flame monitoring
must be approved for continuous operation, or main flame and ignition flame will be monitored
together with one flame scanner, approved for continuous operation.
Summary of Contents for ETAMATIC
Page 1: ...Manual ETAMATIC ETAMATIC S CE 0085 AU 0207 Sensors and Systems for Combustion Engineering...
Page 2: ......
Page 7: ...6 Table of Contents 9 27 Dimensions and weight 128 9 28 Declaration of Conformity 131...
Page 65: ...64 8 Control Mode 8 2 1 Leakage test flow chart Fig 8 4 Flow chart leakage test...
Page 90: ...89 9 Appendix 9 8 Process Sequence Charts Fig 9 3 Process sequence chart gas with pilot burner...
Page 91: ...90 9 Appendix Fig 9 4 Process sequence chart oil with pilot burner...
Page 92: ...91 9 Appendix Fig 9 5 Process sequence chart gas without pilot burner...
Page 93: ...92 9 Appendix Fig 9 6 Process sequence chart oil without pilot burner...
Page 99: ...98 9 Appendix Fig 9 8 ETAMATIC S wiring diagram with ignition flame monitoring...
Page 104: ...103 9 Appendix Fig 9 16 LSB connection ETAMATIC LT1 other LAMTEC devices...
Page 134: ...133 9 Appendix...
Page 135: ......