Siemens SIPART DR20

Project Planning Manual SIPART DR20
Planning example K3
Fixed setpoint control, controlled variable direct from
Pt 100 resistance thermometer in three-wire circuit
W
y
Drive
x
The controlled variable x from the Pt 100 is applied to the
analog input AE3. The measuring range can be
programmed; the min. span is 50 K, the min. start-of-
scale value - 50 °C, the max. full-scale value 850 °C (see
information on page 76).
The manipulated variable output is 0 to 20 mA; a signal range
of 4 to 20 mA can be set using configuring switch S37 = 1.
The alarm circuit monitors the controlled variable
(temperature) (set parameters A2 = min. and A1 = max. !).
PIease refer to the remarks on page 108 !
Setting of configuring switches: S8= 1, S22 = 1
AE1 AE2 BE BA L+ GND GND Iy
12345678
SIPART DR20 K
6DR2004-1 (AC 230 V)
6DR2004-2 (AC 115 V)
6DR2004-4 (UC 24 V)
123412341234
PE
N
L
AC 115 V
AC 230 V
⎫
⎬
⎭
PE
N
UC 24 V
L
⎫
⎬
⎭
Slot 3 GW Slot 2 AE4 Slot 1 AE3
5
M1 A1 R1 A2 M2 M M/A S E
I
+
-
y
Pt100
Option module
6DR2801-8A
Option module
6DR2800-8P
not equipped
R
L1
R
L4
Line resistances
R
L1
+ R
L3
+R
L4
≤ 50 Ω
R
L3
114