User Manual

Page 69
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
PSB 9000 2.5 kW Series
Schematic diagram: Applications and results:
Start (DC)
t
U,I
Seq.time
En d ( DC)
Example 5
Focussing 1 cycle of 1 sequence point:
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e󰀨ective.Arampwithahorizontalprogression
is generated.
Start (DC)
t
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Seq.time
En d ( DC)
Example 6
Focussing 1 cycle of 1 sequence point:
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e󰀨ective.Herestartandendvaluesareunequal
and a steadily increasing ramp is generated.
Bylinkingtogetheranumberofdi󰀨erentlyconguredsequencepoints,complexprogressionscanbecreated.Smart
congurationofthearbitrarygeneratorcanbeusedtomatchtriangular,sine,rectangularortrapezoidalwavefunc-
tionsandthus,e.g.asequenceofrectangularwaveswithdi󰀨eringamplitudesordutycyclescouldbeproduced.
Schematic diagram: Applications and results:
t
U,I
t
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Example 7
Focussing 2 cycles of 1 sequence point:
Onesequencepoint,conguredasinexample
3,isrun.Sincethesettingsdenethattheend
o󰀨set(DC)ishigherthanthestart,thesecond
run will revert to the same start level as the
rst,regardlessofthesignallevelattheendof
therstrun.Thiscanproduceadiscontinuity
in the total progression (marked in red) which
may only be compensated with careful choice
of settings.
t
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Po int 1 Point 2
Example 8
Focussing 1 cycle of 2 sequence points:
Two sequence points run consecutively. The
rstonegeneratesasinewavewithincreasing
amplitude, the second one with a decreasing
amplitude. Together they produce a progression
as shown left. In order to ensure that the maxi-
mum wave in the middle occurs only once, the
rstsequencepointmustendwithapositivehalf
wave and the second one start with a negative
half wave as shown in the diagram..