User manual

Page 69
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
PSI 9000 DT Series
Schematic diagram: Applications and results:
Start (DC)
t
A
Start (AC)
End (
A
C)
Seq.time
End (DC)
Example 2
Focussing 1 cycle of 1 sequence from 100:
The DC values at start and end are the same but the AC (amplitude)
not. The end value is higher than the start so that the amplitude
increases with each new half sine wave continuously through the
sequence. This, of course, only if the sequence time and frequency
allow for multiple waves to be created. e.g. for f=1 Hz and Seq. time
= 3 s, three complete waves would be generated (for angle = 0°) and
reciprocally the same for f=3 s and Seq. time=1 s.
Start (DC)
t
A
Start (AC) End (AC)
Seq.time
End (DC)
Example 3
Focussing 1 cycle of 1 sequence from 100:
The DC values at start and end are unequal, as are also the AC val-
ues. In both cases the end value is higher than the start so that the
offset increases from start to end (DC) and the amplitude also with
each new half sine wave.
Additionallytherstsinewavestartswithanegativehalfwavebe-
cause the angle is set at 180°. The start angle can be shifted at will
in 1° steps between 0° and 359°.
Start (DC)
t
A
Start (AC)
f (start)
f (end)
Seq.time
End (DC)
Example 4
Focussing 1 cycle of 1 sequence from 100:
Similar to example 1 but with another end frequency. Here this is
shown as higher than the start frequency. This impacts the period
of the sine waves such that each new wave will be shorter over the
total span of the sequence time.
Start (DC)
t
A
Seq.time
End (DC)
Example 5
Focussing 1 cycle of 1 sequence from 100:
Similar to example 1 but with a start and end frequency of 0 Hz.
Without a frequency no sine wave part (AC) will be created and only
the DC settings will be effective. A ramp with a horizontal progres-
sion is generated.
Start (DC)
t
A
Seq.time
End (DC)
Example 6
Focussing 1 cycle of 1 sequence from 100:
Similar to example 1 but with a start and end frequency of 0 Hz. With-
out a frequency no sine wave part (AC) will be created and only the
DC settings will be effective. Here start and end values are unequal
and a steadily increasing ramp is generated.