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EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
PSB 9000 3U Series
After the settings for the selected sequence point are accepted with SAVE, further points can be configured. If the
button NEXT in the sequence point selection screen is touched a second settings screen appears in which global
following global settings for all 99 points are adjustable:
Value
Range
Description
Start seq.
1...End seq.
First sequence point in the block
End seq.
Start seq...99
Last sequence point in the block
Seq. Cycles
∞ or 1...999
Number of cycles to run the block
Schematic diagram:
Applications and results:
St
ar
t(
D
C
)
t
A
St
art
(A
C)
Seq.time
En
d
(D
C
)
Example 1
Focussing 1 cycle of 1 sequence point from 99:
DC values for start and end are the same, also the AC amplitude.
With a frequency >0 a sine wave progression of the set value is
generated with a defined amplitude, frequency and Y axis offset (DC
value at start and end).
The number of sine waves per cycle depend on the sequence time
and the frequency. If the sequence time was 1 s and the frequency
1 Hz, there would be exactly 1 sine wave. If the time was 0.5 s at the
same frequency, there would only be a half sine wave.
St
ar
t (
D
C
)
t
A
Sta
rt (
AC
)
En
d (
AC
)
Seq.time
En
d
(D
C
)
Example 2
Focussing 1 cycle of 1 sequence point from 99:
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.
St
ar
t(
D
C
)
t
A
Start (AC)
End (AC)
Seq.time
En
d
(D
C
)
Example 3
Focussing 1 cycle of 1 sequence point from 99:
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 first 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°.
St
ar
t(
D
C
)
t
A
St
art
(A
C)
f (start)
f (end)
Seq.time
En
d
(D
C
)
Example 4
Focussing 1 cycle of 1 sequence point from 99:
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.
