66
8
Control Mode
8.2.3
Standby
Standby mode
In this mode the ETAMATIC enables a switchback to ignition burner mode. The burner re-
starts without pre-ventilation.
You can activate „standby mode“, if the internal firing-rate controller is active or if an external
input or output command can be connected to LSB module or fieldbus (see parameter 812,
level 4).
As soon as the burner firing-rate controller detects that a shutdown of the burner would be nec-
essary, it closes the contact at the LSB or the appropriate bit will be set to high via field bus.
This doesn’t lead to a shut down as it was up to now. Stand-by mode will be activated instead.
The stand-by mode drives the load value to ignition point and waits for ignition acknowledge-
ment. Ignition valve and ignition transformer are switched on first. The recirculation channels
run to CLOSE position. Ignition position has to be active. After an idle time (stabilisation time)
the valve gas 1 (if fuel = gas) is closed for purging the gas system.
Afterwards all fuel valves but the ignition valve stay closed. If you have set the performing of
a leakage test after operation at fuel gas, it will be started now.
Afterwards the ignition transformer will be shut off. Only the ignition valve will remain open.
Fig. 8-5 Sequence at gas operation
*DK = Leakage test after operation. During that time the ignition transformer is active.
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: ......
