Siemens SIMATIC ET 200SP Manual page 11

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.
①
2-wire connection for current measurement
②
Backplane bus interface
③
Analog-to-digital converter (ADC)
④
Current limitation
⑤
Color identification label CCxx (optional)
⑥
Temperature recording for BU type A1 only
(function cannot be used for this module)
⑦
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
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