Rectangular Function - Elektro-Automatik ELR 9000 Betriebsanleitung

ELR 9000 Series
Schematic diagram:
A
t2
3.9.7

Rectangular function

The following parameters can be configured for a rectangular wave function:
Value Range
I(A), U(A) 0...(Nominal value - (Off)) of U, I A = Amplitude of the signal to be generated
I(Off), U(Off) 0...(Nominal value - (A)) of U, I
t1 0.1 ms...36000 s
t2 0.1 ms...36000 s
Schematic diagram:
A
t1 t2
EA Elektro-Automatik GmbH
Page 70
Helmholtzstr. 31-33 • 41747 Viersen
Germany
t
t1
Description
Off = Offset, based on the foot of the rectangular wave
Time (pulse width) of the upper level (amplitude)
Time (pause width) of the lower level (offset)
t
Application and result:
A triangular wave signal for input current (direct) or input
voltage (indirect) 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 (isos-
celes triangle) or 99.9 ms:0.1 ms (right-angled triangle
or sawtooth).
Application and result:
A rectangular or square wave signal for input current
(direct) or input voltage (indirect) is generated. The
intervals t1 and t2 define 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 define 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
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
ea1974@elektroautomatik.de