Siemens SIPART DR24 User Manual

1 Technical Description
1.5 Functional Description
1.5.7 Basic Functions (Arithmetic blocks b)
Manual
50
SIP ART 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
1E2
Switch for digital variables
E3 A
0 E1
1E2
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

Siemens SIPART DR24 Specifications

General

Brand	Siemens
Model	SIPART DR24
Category	Controller
Language	English