1 Technical Description
1.5 Functional Description
1.5.7 Basic Functions (Arithmetic blocks b)
Manual
50
SIPART DR24 6DR2410
C79000-G7476-C153-03
1.5.7.5 Comparison and Switching Functions
Differential amplifier
A = (E1 -- E2)
⋅
E3
With E3 = gain factor
Default: A = E1 -- E2
The differential amplifier is used primarily for forming
the control difference xd = w -- x with the possibility of
active direction reversal (normal/reversing) by
E3 = --1.000.
Switch for analog variables
E3
A
0
E1
1
E2
Switch for digital variables
E3
A
0
E1
1
E2
Comparator with adjustable hysteresis
(two--position switch, e.g. limit value sensor)
Inputs
Output A
E1
≥
(E2 + H/2)
1 (H = |E3| = hysteresis)
E1
<
(E2 -- H/2)
0
If the input variables are formed by computing, the
comparator may respond shifted by 1 LSB due to the
computing error.
Response threshold (dead band)
A = 0 for |E1|
≤
|a|,
A = signum E1
⋅
(|E1| -- |E2|) for |E1|
>
|a|
with a = 32 = response threshold
Limiter
The signal at E1 is limited to the values set with E2 and
E3.
E2 = lower limit
E3 = upper limit
With E2
≥
E3 A is = E3
ncon
--1.000
x
ncon
.A
∩
b
.F
--
∩
.1
∩
.2
∩
.3
n ---
AMPL
+
-
ncon
ncon
Lo
.A
∩
b
.F
--
∩
.1
∩
.2
#
.3
n ---
ASo
ncon
ncon
Lo
.A
#
b
.F
--
#
.1
#
.2
#
.3
n ---
bSo
ncon
ncon
0.010
H
.A
#
b
.F
--
∩
.1
∩
.2
∩
.3
n ---
CoMP
+
-
2a
ncon
0.010
.A
∩
b
.F
--
∩
.1
∩
.2
n ---
dEbA
ncon
1.050
--0.050
.A
∩
b
.F
--
∩
.1
∩
.2
∩
.3
n ---
LiMi
Summary of Contents for 6DR2410
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Page 178: ...6 Ordering Data Manual 176 SIPART DR24 6DR2410 C79000 G7476 C153 03 ...
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