Siemens LMV5 Series Basic Documentation page 241

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17.1.6 Fuel meter readings
The VSD module ascertains the cumulated gas or oil throughout. For each type of fuel,
there is one resettable and one nonresettable meter available.
Parameter:
Volume Gas
Parameter:
Volume Oil
Parameter:
Volume Gas R
Parameter:
Volume Oil R
When resetting the fuel meters, the reset date will be stored.
Parameter:
Reset DateGas
Parameter:
Reset DateOil
The system continuously calculates the throughput of the selected type of fuel. The
calculation time is dynamic and reaches from 1 to 10 seconds.
If the meter delivers no pulse for 10 seconds, the throughput displayed will be «0». This
means that with minimum throughput, the sensor's pulse frequency should be a minimum
of 0.1 Hz.
The display is smoothed.
The maximum frequency is 300 Hz when fuel throughput is at its maximum.
Parameter:
Curr Flow Rate
17.1.7 Process data
In its operating position, the VSD module records data that show how well the system
components work together (LMV5x.2..., VSD module, VSD, motor and BU).
These data can only be read.
The «Maximum static deviation» indicates the greatest speed deviation that occurred
during a drive command in modulating operation.
Parameter:
Max Stat Dev
The «Maximum dynamic deviation» indicates the greatest speed deviation between the
ramp predefined by the VSD module and the measured speed. This information is only
relevant in multistage operation.
Parameter:
Max Dyn Dev
In addition, the number of «static deviations» > 0.3 % or > 0.5 % will be counted. This
gives the number of speed deviations above 0.3 % or 0.5 % that occurred during a drive
command.
The number of deviations > 0.5 % also corresponds to the number of correcting cycles.
Parameter:
Num Dev >0.3%
Parameter:
Num Dev >0.5%
The process data will only be stored in RAM, which means that they will be reset via
reset or lockout reset.
Basic Documentation LMV51...
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CC1P7550en
01.10.2003