Siemens LMV5 Quick Start Manual page 109

Menu Path Parameter
ReleaseContctVSD
Params& Display>
VSD Module >
Configuration
TolQuickShutdown
Num Puls per R
Standardization
Params & Display>
StandardizedSp
VSD Module>
Configuration>
Absolute Speed
Speed
Setpoint Output
Settling Time
Params & Display>
PulseValueGas
VSD Module>
Configuration>
Fuel Meter
PulseValueOil
Max Stat Dev
Max Dyn Dev
Params & Display>
VSD Module>
Num Dev >0.3%
Process Data
Num Dev >0.5%
Absolute Speed
LMV5 QSG Rev 4
U = User O = OEM
S = Service
This sets the behavior of the run / stop dry contact (terminals X73.1 and X73.2). If set to closed, then this dry
S contact will stay closed from posturge (phase 78) into phase 10 when the VSD is driving to home position,
which is typically set at 0 % (0 RPM). If set to open, the blower will freewheel after phase 78. Typ = open
This sets the percentage of speed deviation from the desired fan speed that will cause an immediate shut
O
down the burner. Typically does not need to be adjusted. Range = 0 to 100% Def / Typ = 10%
This sets the expected number of pulses per motor revolution. This setting depends upon what type of speed
wheel is used. Range = 3 or 6. Def = 3
This starts the standardization process for the motor driven by the VSD. When activated, it will ramp the
VSD up and then down with the air damper open. During this time, the LMV52 will correlate a milliamp
S
signal to the peak motor RPM.
Shows the motor speed corresponding to 19.5 mA input to the VSD / motor combination. This is
automatically set when the VSD / motor is standardized. It can be set manually, but this is not recommend in
most cirumstances.
U This displays the real time speed of the blower motor in RPM (tachometer).
This sets what the output signal will be to the VSD. It can be set to 4 to 20mA or 0 to 20mA. Typically this is
S
set to 4-20mA. Def = 4-20mA.
This sets a filter time or a delay time between when a speed is read from the speed wheel to when the This sets a filter time or a delay time between when a speed is read from the speed wheel to when the
LMV52 attempts to correct the speed by varying the 4-20mA signal to the VSD. Adjust if VSD isoscillating or
O
"hunting" Time is multiplied by 25 milliseconds, so a setting of 16 yields 400ms or 0.4 seconds. Range =
200 to 5000ms. Def =16, or 400ms
This sets the number of pulses per unit of gas flow (for use with gas meters having a pulsed output, such as
a modern turbine gas meter) Can be set for cubic meters or cubic feet.
S
Range = 0 to 999.99999 pulses / (cubic feet) Def / Typ = meter specific
This sets the number of pulses per unit of oil flow (for use with oil meters having a pulsed output) Can be set
for liters or gallons. Range = 0 to 999.99999 pulses / (gal) Def / Typ = meter specific
Maximum motor speed deviation from setpoint during steady state operation (steady load) during a run
period. Range = 0 to 100%
Maximum motor speed deviation from setpoint during an acceleration or deceleration of the motor(changing
load) during a run period. Range = 0 to 100%
U
The number of speed deviations exceeding 0.3% of the speed setpoint during a VSD run period.
The number of speed deviations exceeding 0.5% of the speed setpoint during a VSD run period.
This displays the real time speed of the blower motor in RPM (tachometer).
Sec 4 Pg 53
Descriptions / Notes
78-10
22-78
60-62
22-78
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