Connection Uni-Module Ai3 S8 = 6, 7; Connection Examples For Analog Measuring Inputs With The Module 6Dr2800-8J - Siemens SIPART DR21 Manual

Manual
- Pin assignment for resistance potentiometer R S8 = 6, 7
3-Conductor terminal
R
L4
R
p
1)
R
R
s
L2
R
L1
R
≤50 Ω
L4
R
⋅R
S p
≤2,8 k, Rp > 5 KΩ not recommended
R + R
S p
1)
R Shunt impedance only necessary if 2.8 kΩ < R ≤ 5 kΩ
s
Figure 4-23 Connection UNI-module AI3 S8 = 6, 7
4.2.3.2 Connection examples for analog measuring inputs with the module
6DR2800-8J
In current inputs the input load resistance is between AI+ and AI--.
If the signal is still required during service work in which the terminal is disconnected, the input
load resistance must be connected to the terminal between AI+ and AI--. The internal 49.9 Ω
resistance must then be disconnected in 6DR2800-8J by appropriate rewiring.
20 mA
AI+
49.9 Ω
AI -
Figure 4-24 Current input via options modules, internal or external 49.9 Ω resistance
SIPART DR21
C73000-B7476-C143-08
2-Conductor terminal
4
3
R
p
2
1
R
20 mA
4
AI+
AI -
optionally
R
L4
4
3
2
1
R
L1
+ R
≤50 Ω
L1 L4
Block diagram of UNI-module 6DR2800-8V
1 V/10 V
+
49.9 Ω
3
2
--
1
6DR2800-8J
set 1 V jumper
4 Installation
4.2 Electrical Connection
i
m
+REF
U
A
+
D
--
Sensor
6DR2800-8V
137