Siemens LMV3 series Technical Instructions page 59

LMV Series
Parameter #
Fuel 0 Fuel 1
Parameter Name
Gas Oil Gas Oil
400 Ratio Control**
501 504
Special Position Fuel
502 505 Special Position Air
503 506 Special Position VSD
522
Ramp Up VSD
523 Ramp Down VSD
529 Separate VSD Ramp
SCC Inc.
LEGEND - Password Access: U = User, S = Service, O = OEM, U/S = View - User, Write - Service, S/O = View - Service, Write - OEM
Shaded Parameters = Frequently Used. ** Parameters = Must Set. Fuel 1 parameters for LMV36 only.
U/S/O Default Range
400 Level: Fuel - Air Ratio Curves
S Not set Points 0-9
500 Level: Special Positions / Modulation Ramps / VSD Speed Shift
00 = 0°
01 = 0° 0-90°
02 = 15°
00 = 0°
01 = 90° 0-90°
02 = 45°
00 = 0%
01 = 100% 0-100%
02 = 50%
S
10 sec 5-40 sec
10 sec 5-40 sec
0 0-2
This is where actuator position curves and VSD speed curves are set from low to high fire. These position
curves determine the fuel-air ratio for the burner across the firing range. Nine points must be set from low
to high fire (P1-P9) in addition to the ignition point (P0). See Section 4 for more information on
commissioning.
This sets the special positions for the fuel actuator:
Index 00 = home position
Index 01 = prepurge position
Index 02 = postpurge position
This sets the special positions for the air actuator:
Index 00 = home position
Index 01 = prepurge position
Index 02 = postpurge position
This sets the special positions for the VSD / PWM blower:
Index 00 = home position
Index 01 = prepurge position
Index 02 = postpurge position
This sets the speed that the VSD ramps up. This setting is active during modulation as well as driving to
special positions (home, prepurge, ignition, postpurge). Large blowers typically require a longer ramp up.
This sets the speed that the VSD ramps down. This setting is active during modulation as well as driving to
special positions (home, prepurge, ignition, postpurge). Large blowers typically require a longer ramp
down.
When activated, this allows the air damper to be at purge position when the VSD is ramping to ignition or
home position. This provides a braking effect to allow the VSD to ramp down more quickly.
0 = deactivated
1 = activated
2 = activated (50% higher tolerances when fuel valves closed)
Page 11
Description
Technical Instructions
LV3-1000
Section 3