User manual

Page 47
EA Elektro-Automatik GmbH
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Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
EL 3000 B Series
3.9.5 Triangular function
Thefollowingparameterscanbeconguredforatriangularwavefunction:
Value Range Description
Ampl. 0...(Rated value - Offset)) of U or I Ampl. = Amplitude of the signal to be generated
Offset 0...(Rated value - Ampl) of U or I Offset, based on the foot of the triangular wave
t1 0.01 ms...6000 s Time for the positive slope of the triangular wave signal.
t2 0.01 ms...6000 s Time for the negative slope of the triangular wave signal
When adjusting very short time value for t1 and t2 not every adjustable amplitude can be gained
on the DC input. Rule of thumb: the smaller the time value, the lower the true amplitude.
Schematic diagram: Application and result:
Offset
t
A
Amplitude
t1t2
A triangular wave signal for input current or input voltage is
generated. The positive and negative slope times are variable
and can be set independently.
The offset shifts the signal on the Y-axis.
The sum of the intervals t1 and t2 gives the cycle time and its
reciprocal is the frequency.
Example: a frequency of 10 Hz is required and would lead to
periodic duration of 100 ms. This 100 ms can be freely allocated
to t1 and t2, e.g. 50 ms:50 ms (isosceles triangle) or 99.9 ms:0.1
ms (right-angled triangle or sawtooth).
3.9.6 Rectangular function
Thefollowingparameterscanbeconguredforarectangularwavefunction:
Value Range Description
Ampl. 0...(Rated value - Offset)) of U or I Ampl. = Amplitude of the signal to be generated
Offset 0...(Rated value - Ampl) of U or I Offset, based on the foot of the rectangular wave
t1 0.01 ms...6000 s Time (pulse width) of the upper level (amplitude)
t2 0.01 ms...6000 s Time (pause width) of the lower level (offset)
When adjusting very short time value for t1 and t2 not every adjustable amplitude can be gained
on the DC input. Rule of thumb: the smaller the time value, the lower the true amplitude.
Schematic diagram: Application and result:
Offset
t
A
Amplitude
t1 t2
A rectangular or square wave signal for input current or input
voltageisgenerated.Theintervalst1andt2denehowlong
the value of the amplitude (pulse) and how long the value of the
offset (pause) are effective.
The offset shifts the signal on the Y axis.
Intervalst1andt2canbeusedtodeneadutycycle.Thesum
of t1 and t2 gives the period and its reciprocal is the frequency.
Example: a rectangular wave signal of 25 Hz and a duty cycle
of 80% are required. The sum of t1 and t2, the period, is 1/25
Hz = 40 ms. For a duty cycle of 80% the pulse time (t1) is 40
ms*0.8 = 32 ms and the pause time (t2) is 8 ms