KEPCO BOP-ME 1KW, Руководство оператора

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BOP HIPWR 091719
3-33
A waveform is comprised of at least one, or as many as 10 segments. Each segment has an
individually specified value for Type, Frequency or Period, Amplitude, Offset, Start angle, Stop
angle, and Initial/Repeat; see Table 3-12 for details.
To view a previously saved waveform Refer to PAR. 3.3.10.4
To create a new waveform Refer to PAR. 3.3.10.6
To execute a previously saved waveform Refer to PAR. 3.3.10.7
To modify a previously saved waveform Refer to PAR. 3.3.10.8
To create a complex waveform (with example) Refer to PAR. 3.3.10.9
FIGURE 3-11. SAVED WAVEFORMS MENU
3.3.10.3 UNDERSTANDING HOW WAVEFORMS ARE GENERATED
Waveform are generated by the BOP by producing a series of discrete output levels (points) in a
prescribed pattern. In the case of sine, triangle and ramps, this produces an output that con-
forms to an approximation of the selected waveform type. The number of points available for a
waveform is limited to 3933 for all segments. Since there are a finite number of points, the lower
the frequency, the more points used, and the smoother the output waveform will appear. As the
frequency increases, fewer points are available for each cycle and the resulting waveform may
appear somewhat more jagged. Tables 3-10 and 3-11 list the number of points used for each
frequency range of sine, triangle and ramp waveforms and for square waveforms, respectively.
Levels use a maximum of 60 points.
This means that a waveform consisting of a single sinewave segment at 0.1 Hz will use all 3840
points to generate each cycle, while a sinewave at 440 Hz will use 24 points for each cycle.
Note that a single segment between 0.01Hz and 1.8Hz uses all available points, so subsequent
segments will not be accepted. Four segments of 10Hz will be acceptable, while five segments
at 10 Hz will not be accepted. Reducing the segment by using the start and stop angle will also
reduce the number of points used.
Each time a segment is added, the waveform is validated. When a segment is added that
causes the point total to exceed 3933, the error message “Input buffer overrun” will be displayed
briefly. This can be corrected by either reducing the number of segments, or increasing the fre-
quency of the existing segments until the point total is acceptable.
VOLTAGE
SOURCE
VOLTAGE CURRENT
0.0000 0.0000