Elektro-Automatik ELR 9000 HP, Руководство по эксплуатации, Страница: 163 / 189

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ELR 9000 HP Series
3.10.6 Triangular function
The following parameters can be configured for a triangular wave function:
Value Range Description
I(A), U(A) 0...(Nominal value - (Offs)) of U, I A = Amplitude of the signal to be generated
I(Offs), U(Offs) 0...(Nominal value - (A)) of U, I Offs = Offset, based on the foot of the triangular wave
t1 0.1 ms...36000 s Time for the positive slope of the triangular wave signal.
t2 0.1 ms...36000 s Time for the negative slope of the triangular wave signal
Schematic diagram: Application and result:
O
ffse
t
t
A
A
m
plit
ud
e
t1 t2
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).
3.10.7 Rectangular function
The following parameters can be configured for a rectangular wave function:
Value Range Description
I(A), U(A) 0...(Nominal value - (Offs)) of U, I A = Amplitude of the signal to be generated
I(Offs), U(Offs) 0...(Nominal value - (A)) of U, I Offs = Offset, based on the foot of the rectangular wave
t1 0.1 ms...36000 s Time (pulse width) of the upper level (amplitude)
t2 0.1 ms...36000 s Time (pause width) of the lower level (offset)
Schematic diagram: Application and result:
O
ffs
et
t
A
A
m
plit
ude
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