Siemens SIMATIC ET 200SP F-AI 4xI 0(4) 20mA 2-/4-wire HF Series - Page 51

Applications of the F-I/O module
5.4 Application 4: Safety mode SIL3/Cat.4/PLe with 4-wire transducer
Analog input module F-AI 4xI 0(4)..20mA 2-/4-wire HF (6ES7136-6AA00-0CA1)
Manual, 08/2018, A5E41448857-AB
51
①
Backplane bus interface
U
V
Sensor supply
②
Analog-to-digital converter (ADC)
M
Supply voltage ground
③
Sensor supply/reverse polarity protection
M
n
Ground reference to U
V
, channel n
④
Temperature measurement for BU type A1
only (the function cannot be used for this
module.)
L+ 24 V DC (infeed only with light-
colored BaseUnit)
⑤
Color-coded label with color code CC00
(optional)
P1, P2,
AUX
Internal self-assembling voltage
buses
Connection to left (dark-colored
BaseUnit)
Connection to left interrupted (light-
colored BaseUnit)
⑥
Filter connection supply voltage (available
with light-colored BaseUnit only)
DIAG Diagnostics LED (green, red)
⑦
External fuse AI0, AI1,
AI2, AI3
Channel status LED (green)
I
n
+ Current input positive, channel n F0, F1, F2,
F3
LED channel fault (red)
I
n
-
Current input negative, channel n
PWR
Power LED (green)
*
Measuring transducer
Figure 5-4 1oo2 evaluation
WARNING
To achieve SIL3/Cat.4/PLe using this wiring, you must use suitably qualified sensors.
WARNING
All cables need to be laid in such a way that they are resistant to interference voltage. Use
shielded cables.