Thresholdfgr Gas(Oil) - Siemens LMV5 Series Technical Instructions
Linkageless burner management system
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LMV Series
LEGEND - Password Access: (U)=User, (S)=Service, (O)=OEM, Shaded = Commonly Used, ** = Must Set, X = Has Function, / = Partial Function
Menu Path
Parameter
Params & Display>
SW Version (U)
O2 Module
FGR-Mode (S)
Params & Display>
Flue Gas Recirc.
FGR-sensor (S)
actTmpFGR-sensor (U)
ThresholdFGR Gas(Oil) (S)
DelaytimeFGR Gas(Oil) (S)
Factor FGR Gas(Oil) (S)
SCC Inc.
Default
Range
Read Only
Software version of the O2 module (PLL module).
Sets the mode of the FGR hold for the Aux 3 actuator. Seven seperate operating modes exist.
These are:
1) Aux3onCurve- Function deactivated and Aux 3 actuator always operates on its
programmed curve.
Aux3onCurve
2) time - Aux 3 actuator stays at ignition position until DelayTimeFGR Gas(Oil) timer expires.
time
3) temperature - Aux 3 actuator stays at ignition position until ThresholdFGR Gas(Oil)
temperature
Aux3on
temperature is reached.
temp.contr.
Curve
4) temp.contr. - Position of Aux 3 actuator is based on flue temp, Factor FGR Gas(Oil) , and
TCautoDeact
the programmed curve for the Aux 3 actuator (LMV52.4 only).
deactMinpos
5) TCautoDeact - same as Temp.contr but automatically deactivates if there is a fault with the
auto deact
flue gas sensor (LMV52.4 only).
6) deactMinpos - after ignition position, Aux 3 actuator is held closed (LMV52.4 only).
7) auto deact - do not select this option. It is displayed if the FGR hold was deactivated due
to a sensor issue (LMV52.4 only).
X86PtNi1000
X86PtNi
X60 Pt1000
Selects the type and wiring location of the flue gas sensor for the FGR functions.
1000
X60 Ni1000
Read Only
The actual temperature read by the selected FGR sensor can be viewed at this parameter.
This sets the temperature that must be achieved to release the Aux 3 actuator to modulate.
752 F
32-1562 F
Only has an effect if parameter FGR-Mode is set to "temperature".
This sets the time that must elapse before the Aux 3 actuator is released to modulate. Only
300s
0-63min
has an effect if parameter FGR-Mode is set to "time".
Adjustment of calculated temperature dependent position of the Aux 3 actuator. An
adjustment of less than 100% reduces the position of the Aux 3 actuator. 100% means no
100%
10-100%
adjustment. Factor only has an effect when FGR temperature is different than when ratio
curves were commissioned.
Page 42
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