Siemens LMV5 Quick Start Manual page 74

Special Features
In addition to the capabilities mentioned above, the LMV5 also has many special settings that are
very useful in some situations. These special settings are detailed in the next section, section 4-2.
This section details the special settings (parameters) that are used most frequently. These are:
NumFuelActuators Permits the LMV5 to run dual fuel with a single actuator.
MinTimeStartRel Permits the LMV5 to hold in phase 21 for a specified period of time.
Since the blower is energized in phase 22.
This can be used as a delay to let stack and/or fresh air dampers open.
PressReacTime Allows the LMV5 to disregard the high and low gas / oil pressure switches for a
settable time period after the main gas / oil valves open.
This is used with automatic reset pressure switches so that pressure spikes
due to the main valves opening will be ignored.
This also allows for a reduced delta between switch setpoints and normal
operating pressures.
This time can also be reduced to 0.2 seconds, deactivating the feature.
AfterburnTme Permits the LMV5 to ignore a flame signal for a settable period of time after
the main fuel valves close.
This setting is useful for oil nozzles that are purged with steam or air after the
main fuel valves close.
NormDirectStart Permits the LMV5 to go from post-purge directly into prepurge without turning
the blower off.
The blower air pressure switch is checked by using a 3-way solenoid valve.
StartReleaseGas On a LMV52, configures terminal X7-03.02 as a start release for gas, CPI gas
(closed position indication) CPI oil, or CPI gas + CPI oil.
PS-VP/CPI On a LMV51/52, configures terminal X9-03.02. For a LMV51, options are PS-
VP (Pressure Switch Valve Proving) or CPI gas.
Options for a LMV52 are PS-VP, CPI gas, CPI oil, or CPI gas + CPI oil.
ValveProvingType Enables gas valve proving on start-up or shutdown or both.
This type of testing ensures that the gas valves are closed, and that the
valve's seats are in good condition.
ProgramStop Stops the LMV5 at a particular phase in the start-up or shutdown sequence.
This is particularly useful when set to phase 44 for tuning the pilot.
FGR-Mode On an LMV52, enables only the Aux 3 actuator to be held from modulating
until a certain temperature or time after light off is met.
This is usually used to delay the use of FGR until a time or until a stack
temperature is met.
LMV5 QSG Rev 4 Sec 4 Pg 18 www.scccombustion.com