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Analog inputs
Number of analog inputs
•
•
Permissible input voltage for voltage input (de-
struction limit), max.
Permissible input current for current input (de-
struction limit), max.
Input ranges (rated values), voltages
1 V to 5 V
Input resistance (1 V to 5 V)
-10 V to +10 V
Input resistance (-10 V to +10 V)
-2.5 to +2.5 V
Input resistance (-2.5 to +2.5 V)
-5 V to +5 V
Input resistance (-5 V to +5 V)
Input ranges (rated values), currents
0 mA to 20 mA
Input resistance (0 mA to 20 mA)
-20 mA to +20 mA
Input resistance (-20 mA to +20 mA)
4 mA to 20 mA
Input resistance (4 mA to 20 mA)
Cable length
shielded, max.
Analog value generation for the inputs
Integration and conversion time/resolution per
channel
Resolution with overrange (bit including sign),
max.
Configurable integration time
Integration time (ms)
Basic conversion time, including integration time
(ms)
Interference voltage suppression for interference
frequency f1 in Hz
Basic execution time of the module (all channels
enabled)
Analog Input Module AI 8xU/I HF (6ES7531-7NF00-0AB0)
Manual, 09/2016, A5E36649087-AB
For current measurement
For voltage measurement
Technical specifications
6ES7531-7NF00-0AB0
8
8
8
28.8 V
40 mA
Yes
100 kΩ
Yes
100 kΩ
Yes
100 kΩ
Yes
100 kΩ
Yes
25 Ω; plus approx. 42 ohm for overvoltage protec-
tion by PTC
Yes
25 Ω; plus approx. 42 ohm for overvoltage protec-
tion by PTC
Yes
25 Ω; plus approx. 42 ohm for overvoltage protec-
tion by PTC
800 m
16 bit
Yes
Fast mode: 2.5 / 16.67 / 20 / 100 ms; standard
mode: 7.5 / 50 / 60 / 300 ms
Fast mode: 4 / 18 / 22 / 102 ms; standard mode:
9 / 52 / 62 / 302 ms
400 / 60 / 50 / 10 Hz
Corresponds to the channel with the highest
basic conversion time
45
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