Analog input modules
D300717 1211 - BL20 I/O modules
6-6
6.2
Analog input module, 1AI, 0/4...20 mA
Figure 6-1:
BL20-1AI-I
(0/4...20MA)
Figure 6-2:
Block diagram
Logic
24
V DC Module supply
5
Module bus
V DC
Galvanic isolation
R < 125
O
Field
A/D Converter
Sensor
power supply
max. 250 mA
Reference
24 V DC
GND
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