© EA Elektro-Automatik in 2022, this information is subject to change without notice
73
06230820_manual_psi_10000_3u_15kw_en_01
The sequence point time (“Time”) and the start and end frequency are related. The minimum value for
Δ
f/s is 9.3. Thus, for example, a setting of start frequency = 1 Hz, end frequency = 11 Hz and time = 5 s
would not be accepted as
Δ
f/s is only 2. A time of 1 s would be accepted or, if the time remains at 5 s, then
an end frequency = 51 Hz must be set.
The amplitude change between start and end is related to the sequence time. A minimal change over an
extended time isn’t possible and in such a case the device will report an inapplicable setting.
After the settings for the selected sequence point have been defined, further points can be configured. Further down below
there are some global settings for the arbitrary function:
Parameter
Range
Description
Cycles
0 / 1...999
Number of cycles to run the sequence point block (0 = infinite cycles)
Start sequence
1...
End sequence
First sequence point in the block
End sequence
Start sequence
...99
Last sequence point in the block
After continuing with
there are global set values to define as last part of the function generator setup.
Diagrams:
Applications and results:
Sta
rt (D
C)
t
U,I
Seq.time
En
d (
DC
)
Example 1:
Focusing 1 cycle of 1 sequence point:
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 offset (DC value at start and end).
The number of sine waves per cycle depend on the sequence point time
and the frequency. If the time were 1 s and the frequency 1 Hz, there would
be exactly 1 sine wave. If the time were 0.5 s at the same frequency, there
would only be a half sine wave.
Sta
rt (D
C)
t
U,I
Seq.time
En
d (
DC
)
Example 2:
Focusing 1 cycle of 1 sequence point:
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 gener-
ated (for angle = 0°) and reciprocally the same for f=3 s and Seq. time=1 s.
Sta
rt (D
C)
t
U,I
Start (AC)
End (AC)
Seq.time
En
d (
DC
)
Sta
rt (D
C)
t
U,I
Start (AC)
End (AC)
Seq.time
En
d (
DC
)
Example 3:
Focusing 1 cycle of 1 sequence point:
The DC values at start and end are unequal, as are also the AC values. 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 because
the angle is set at 180°. The start angle can be shifted at will in 1° steps
between 0° and 359°.
