Connection: 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 8xU BA 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
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 8xU BA (6ES7134-6FF00-0AA1)
Manual, 03/2015, A5E34941660-AA
U
+
Voltage input positive, channel n
n
M
Ground of the analog inputs
ANA
L+
24 V DC (infeed only with light-colored BaseUnit)
M
Ground
P1, P2,
Internal self-assembling voltage buses
AUX
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