Related Products: |
EFMK-101 |
Related Documents: |
EZDP-2064 |
Type: |
Operation |
Keywords/Labels: |
generators, flux channels, load channels |
Summary: |
Describes how to enter generator information so that each row is associated with a flux channel and a 4-20 mA load channel on the RFMS data acquisition. |
The generator configuration data is set up in tabular form, so that each row is associated with a flux channel and a 4-20 mA load channel on the RFMS data acquisition as defined in the Acquisition tab. (See Configure the Flux and Load Channels.)
The sample flux signal graph should help explain the parameters needed to configure the generators.
Complete these steps:
On the Host app screen, click the Settings button, then click the Generator tab.
In the Number of Generators field, enter the number of generators being configured. The range is restricted to match the hardware configuration of the RFMS.
In the Name column, enter the name of the generator.
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In the Slots/Pole column, enter the slots/windings per pole. This number depends on the generator design.
In the sample flux signal above, this parameter is 5, because there are 10 (or 2 * 5) wiggles between the leftmost and the rightmost annotated slots.
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In the Start Angle column, enter the angle, in degrees, where the positive-going flux wiggles start (at the peak of the B Lag 1 slot in the sample above).
The sample plot shows one complete cycle of the generator flux sensor output, and by definition, that cycle spans 360 degrees.
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In the End Angle column, enter the angle, in degrees, where the positive-going flux wiggles stop (at the peak of A Lead 1 slot in the sample above).
The cycle-finding algorithms use the Start Angle, End Angle, and the number of slots per pole to calculate an approximate number of points per flux wiggle. That number is then used for filtering and accessing internal calculations.
In the Max MW Load column, enter the maximum load signal measured by the RFMS. The percentage load value used for the reference library storage at the 1% load interval is calculated based on this value.
In the Load Signal Offset column, enter the bias for converting the load signal into MW for computing the MW load being output by the generator.
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In the Load Signal Gain column, enter the gain value for converting the load signal into MW for computing the MW load being output by the generator. Combined with the Load Signal Offset, this parameter is used to convert the load measured by the RFMS as:
MW_Load = (Load Signal Gain * Measured_Signal) + Load Signal Offset
The MW_Load is then converted to %Load as MW_Load/Max MW Load.
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In the Flux Sensor Offset column, enter the bias added to the flux signal to accommodate any DC offset in the flux sensor output. The flux analysis algorithms work best when the bias is near zero. With this offset, the flux signal values placed into waveforms for storage and analysis are computed as:
Raw_Flux = Uncorrected_Flux - Flux SensorOffset
Click OK to close the Settings dialog.