Siemens SIMATIC ET 200SP Manual - Halaman 15

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Siemens SIMATIC ET 200SP Manual
Connecting
3.1 Wiring and block diagram
Wiring: Voltage measurement 2-wire connection
The following figure shows the block diagram and an example for the terminal assignment of
the analog input module AI 2xU/I 2-/4-wire HS on the BaseUnit BU type A0/A1.
①
2-wire connection for voltage 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
Supply voltage filter circuit (only when light
BaseUnit is present)
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
Figure 3-1 Wiring and block diagram for voltage measurement 2-wire connection
14
U
Supply voltage, channel n
Vn
RES
Reserve, must remain unused for future function
extensions
M
Reference ground to U
n
L+
24 V DC (infeed only with light BaseUnit)
M
Ground
P1, P2, AUX
Internal self-assembling voltage buses
Connection to left (dark BaseUnit)
Connection to left interrupted (light BaseUnit)
DIAG
Diagnostics LED (green, red)
AI0, AI1
Channel status LED (green)
F0, F1
Channel fault LED (red)
PWR
Power LED (green)
Analog input module AI 2xU/I 2-/4-wire HS (6ES7134-6HB00-0DA1)
, channel n
Vn
Manual, 09/2018, A5E03576060-AF