© EA Elektro-Automatik in 2022, this information is subject to change without notice
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06230820_manual_psi_10000_3u_15kw_en_01
3.10.7
Rectangular function
The following parameters can be configured for a rectangular wave function:
Parameter
Range
Description
Amplitude (A)
0...(Nominal value - O) of U, I
A = Amplitude of the signal to be generated
Offset (O)
0...(Nominal value - A) of U, I
Offs = Offset, based on the foot of the rectangular wave
Time t1
0.1 ms...36,000,000 ms
Time (pulse width) of the upper level (amplitude)
Time t2
0.1 ms...36,000,000 ms
Time (pause width) of the lower level (offset)
Schematic diagram:
Application and result:
O
ffset
t
U,I
A
m
plit
ud
e
t1
t2
O
ffset
t
U,I
A
m
plit
ud
e
t1
t2
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
3.10.8
Trapezoidal function
The following parameters can be configured for a trapezoidal curve function:
Parameter
Range
Description
Amplitude (A)
0...(Nominal value - O) of U, I
Amplitude of the signal to be generated
Offset (O)
0...(Nominal value - A) of U, I
Offset, based on the foot of the trapezium
Time t1
0.1 ms...36,000,000 ms
Time for the positive slope of the trapezoidal wave signal.
Time t2
0.1 ms...36,000,000 ms
Time for the top value of the trapezoidal wave signal.
Time t3
0.1 ms...36,000,000 ms
Time for the negative slope of the trapezoidal wave signal.
Time t4
0.1 ms...36,000,000 ms
Time for the base value (offset) of the trapezoidal wave signal
Schematic diagram:
Application and result:
O
ffset
t
U,I
A
m
plit
ud
e
t1
t2
t3
t4
O
ffset
t
U,I
A
m
plit
ud
e
t1
t2
t3
t4
Here a trapezoidal signal can be applied to a set value of U or I. The
slopes of the trapezium can be varied by setting different times for
rise and fall.
The periodic duration and repetition frequency are the result of four
time elements. With suitable settings the trapezium can be deformed
to two triangular or two rectangular pulses. It has, therefore, universal
use.
