LMV Series
Technical Instructions
LV5-1000
Menu Path Parameter Default Range Description
51.1
52.2
52.4
LEGEND - Password Access: (U)=User, (S)=Service, (O)=OEM, Shaded = Commonly Used, ** = Must Set, X = Has Function, / = Partial Function
LMV
Params & Display>
RatioControl
Autom/Manual/Off (U) Automatic
Automatic
Burner off
Manual
Three options exist:
1) Automatic - Enables the burner allowing it to respond to setpoints and switch on / switch
off points.
2) Burner off - Manually turn the burner off.
3) Manual - Enables the load of the burner to be set with SetLoad . When in manual,
setpoints and switching points are ignored. If terminal X5-03.1 (burner switch) is enabled, it
must be energized for the LMV5 to start regardless of parameter setting.
x x x
OperatRampMod (S) 30s 30-120s
Controls the speed at which the actuators / VSD will ramp during phase 60-62 (fuel valves
open). Higher numbers are slower ramps. Set for slowest actuator.
(SQM45 - 10s, SQM48.4 - 30s, SQM9 - 30s, SQM48.6 - 60s)
x x x
OperatRampStage (S) 10s 10-60s Controls the speed at which the LMV5 will ramp in multistage operation.
x x x
TimeNoFlame (S) 10s 10-120s
Controls the speed at which the actuators / VSD will ramp when the fuel valves are closed.
Higher numbers are slower ramps. Set for slowest actuator.
(SQM45 - 10s, SQM48.4 - 30s, SQM9 - 30s, SQM48.6 - 60s)
x x x
NumFuelActuators (O) 2 1-2
Setting is avalable so that a single fuel actuator could be used for a gas and oil valve on a
common shaft. Also useful if firing 2 gaseous fuels with the same firing rate control valve.
x x x
ShutdownBehav (S) HomePos
HomePos
PostpurgeP
Unchanged
Controls the position of the actuators / VSD when a lockout occurs. Set to the safest option
for the burner.
x
x x
Pos. Tolerance (O) 0.3°/0.5%
0.3-1.2°/
0.5-1.2%
Sets the allowable tolerance on actuator positions and VSD speed. A setting of 0.3°/0.5%
means that all actuators must be within +/-0.3° of their required positions, and the VSD must
be within +/-0.5% of its required speed. Can be increased from the default values to
eliminate nuisance lockouts from a fluttering damper.
x x x
Params & Display>
RatioControl
Params & Display>
RatioControl>
Times
ProgramStop (S) deact
See
Description
x x x
For gas or oil firing, this parameter will stop the sequence in the selected phase. Useful for
commissioning and service work.
The LMV5 can be held in the following phases: 24 Prepurge, 32 Prepurge FGR, 36 Ignition
Position, 44 Interval 1 (pilot stabilize), 52 Interval 2 (main flame stabilize), 72 Postpurge
Position, 76 Postpurge FGR. Stop can also be deactivated.
SCC Inc. Page 21 Section 3
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