Siemens SIMATIC ET 200SP Manuel - Page 16

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Siemens SIMATIC ET 200SP Manuel
Wiring: Voltage and current measurement 2 -wire connection
The following figure shows the block diagram and an example of the terminal assignment of
the analog input module AI 4xU/I 2-wire ST on the BaseUnit BU type A0/A1.
2-wire connection for voltage measurement
2-wire connection for current measurement
Backplane bus interface
Analog-to-digital converter (ADC)
Current limitation
Color-coded label with color code CC03 (op-
tional)
Temperature recording for BU type A1 only
(function cannot be used for this module)
Filter connection supply voltage (only when
light-colored BaseUnit is present)
Figure 3-1
Terminal and block diagram for voltage and current measurement
Analog Input Module AI 4xU/I 2-wire ST (6ES7134-6HD01-0BA1)
Manual, 12/2017, A5E03572832-AD
U
+
Voltage input positive, channel n
n
U
-
Voltage input negative, channel n
n
I
+
Current input positive, channel n
n
I
-
Current input negative, channel n
n
L+
24 V DC (feed for light-colored BaseUnit
only)
P1, P2, AUX
Internal self-assembling voltage buses
Connection to left (dark-colored BaseUnit)
Connection to left interrupted (light-colored
BaseUnit)
DIAG
Diagnostics LED (green, red)
AI0, AI1, AI2, AI3
Channel status LED (green)
PWR
Power LED (green)
Wiring up
3.1 Wiring and block diagram
15