Siemens SIMATIC ET 200SP Manual - Page 11

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Siemens SIMATIC ET 200SP Manual
Connection: Current measurement 2-wire connection
The following figure shows the block diagram and an example for the terminal assignment of
the analog input module AI 8xI 2-/4-wire BA on the BaseUnit BU type A0/A1.
2-wire connection for current measurement
Backplane bus interface
Analog-to-digital converter (ADC)
Current limitation
Color identification label CCxx (optional)
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
Wiring and block diagram for voltage measurement 2-wire connection
Analog input module AI 8xI 2-/4-wire BA (6ES7134-6GF00-0AA1)
Manual, 03/2015, A5E34941201-AA
I
+
Input signal, channel n
n
U
Infeed voltage
V
L+
24 V DC (infeed only with light-colored BaseUnit)
M
Ground
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 to AI7
Channel status LED (green)
PWR
Power LED (green)
Wiring up
3.1 Wiring and block diagram
11