Data sheet
6ES7531-7KF00-0AB0
SIMATIC S7-1500 analog input module AI 8xU/I/RTD/TC ST, 16 bit resolution,
accuracy 0.3%, 8 channels in groups of 8; 4 channels for RTD measurement,
common mode voltage 10 V; Diagnostics; Hardware interrupts; Delivery including
infeed element, shield bracket and shield terminal: Front connector (screw
terminals or push-in) to be ordered separately
General information
Product type designation
AI 8xU/I/RTD/TC ST
HW functional status
FS04
Firmware version
V2.0.0
● FW update possible
Yes
Product function
● I&M data
Yes; I&M0 to I&M3
● Isochronous mode
No
● Prioritized startup
No
● Measuring range scalable
No
● Scalable measured values
No
● Adjustment of measuring range
No
Engineering with
● STEP 7 TIA Portal configurable/integrated from version
V12 / V12
● STEP 7 configurable/integrated from version
V5.5 SP3 / -
● PROFIBUS from GSD version/GSD revision
V1.0 / V5.1
● PROFINET from GSD version/GSD revision
V2.3 / -
Operating mode
● Oversampling
No
● MSI
Yes
CiR - Configuration in RUN
Reparameterization possible in RUN
Yes
Calibration possible in RUN
Yes
Supply voltage
Rated value (DC)
24 V
permissible range, lower limit (DC)
19.2 V
permissible range, upper limit (DC)
28.8 V
Reverse polarity protection
Yes
Input current
Current consumption, max.
240 mA; with 24 V DC supply
Encoder supply
24 V encoder supply
● Short-circuit protection
Yes
● Output current, max.
20 mA; Max. 47 mA per channel for a duration < 10 s
Power
Power available from the backplane bus
0.7 W
Power loss
Power loss, typ.
2.7 W
Analog inputs
Number of analog inputs
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8
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© Copyright Siemens
● For current measurement
8
● For voltage measurement
8
● For resistance/resistance thermometer measurement
4
● For thermocouple measurement
8
permissible input voltage for voltage input (destruction limit),
max.
28.8 V
permissible input current for current input (destruction limit),
max.
40 mA
Constant measurement current for resistance-type transmitter,
typ.
150 Ohm, 300 Ohm, 600 Ohm, Pt100, Pt200, Ni100: 1.25 mA; 6 000 Ohm,
Pt500, Pt1000, Ni1000, LG-Ni1000: 0.625 mA; PTC: 0.472 mA
Technical unit for temperature measurement adjustable
Yes; °C/°F/K
Input ranges (rated values), voltages
● 0 to +5 V
No
● 0 to +10 V
No
● 1 V to 5 V
Yes
— Input resistance (1 V to 5 V)
● -1 V to +1 V
— Input resistance (-1 V to +1 V)
● -10 V to +10 V
— Input resistance (-10 V to +10 V)
● -2.5 V to +2.5 V
— Input resistance (-2.5 V to +2.5 V)
100 kΩ
Yes
10 MΩ
Yes
100 kΩ
Yes
10 MΩ
● -25 mV to +25 mV
No
● -250 mV to +250 mV
Yes
— Input resistance (-250 mV to +250 mV)
● -5 V to +5 V
— Input resistance (-5 V to +5 V)
● -50 mV to +50 mV
— Input resistance (-50 mV to +50 mV)
● -500 mV to +500 mV
— Input resistance (-500 mV to +500 mV)
● -80 mV to +80 mV
— Input resistance (-80 mV to +80 mV)
10 MΩ
Yes
100 kΩ
Yes
10 MΩ
Yes
10 MΩ
Yes
10 MΩ
Input ranges (rated values), currents
● 0 to 20 mA
— Input resistance (0 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)
Yes
25 Ω; Plus approx. 42 ohms for overvoltage protection by PTC
Yes
25 Ω; Plus approx. 42 ohms for overvoltage protection by PTC
Yes
25 Ω; Plus approx. 42 ohms for overvoltage protection by PTC
Input ranges (rated values), thermocouples
● Type B
— Input resistance (Type B)
Yes
10 MΩ
● Type C
No
● Type E
Yes
— Input resistance (Type E)
● Type J
— Input resistance (type J)
● Type K
— Input resistance (Type K)
10 MΩ
Yes
10 MΩ
Yes
10 MΩ
● Type L
No
● Type N
Yes
— Input resistance (Type N)
● Type R
— Input resistance (Type R)
● Type S
— Input resistance (Type S)
● Type T
— Input resistance (Type T)
● Type TXK/TXK(L) to GOST
10 MΩ
Yes
10 MΩ
Yes
10 MΩ
Yes
10 MΩ
No
Input ranges (rated values), resistance thermometer
● Cu 10
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No
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© Copyright Siemens
● Cu 10 according to GOST
No
● Cu 50
No
● Cu 50 according to GOST
No
● Cu 100
No
● Cu 100 according to GOST
No
● Ni 10
No
● Ni 10 according to GOST
No
● Ni 100
Yes; Standard/climate
— Input resistance (Ni 100)
10 MΩ
● Ni 100 according to GOST
No
● Ni 1000
Yes; Standard/climate
— Input resistance (Ni 1000)
10 MΩ
● Ni 1000 according to GOST
No
● LG-Ni 1000
Yes; Standard/climate
— Input resistance (LG-Ni 1000)
10 MΩ
● Ni 120
No
● Ni 120 according to GOST
No
● Ni 200 according to GOST
No
● Ni 500
No
● Ni 500 according to GOST
No
● Pt 10
No
● Pt 10 according to GOST
No
● Pt 50
No
● Pt 50 according to GOST
No
● Pt 100
Yes; Standard/climate
— Input resistance (Pt 100)
10 MΩ
● Pt 100 according to GOST
No
● Pt 1000
Yes; Standard/climate
— Input resistance (Pt 1000)
10 MΩ
● Pt 1000 according to GOST
No
● Pt 200
Yes; Standard/climate
— Input resistance (Pt 200)
10 MΩ
● Pt 200 according to GOST
No
● Pt 500
Yes; Standard/climate
— Input resistance (Pt 500)
● Pt 500 according to GOST
10 MΩ
No
Input ranges (rated values), resistors
● 0 to 150 ohms
— Input resistance (0 to 150 ohms)
● 0 to 300 ohms
— Input resistance (0 to 300 ohms)
● 0 to 600 ohms
— Input resistance (0 to 600 ohms)
Yes
10 MΩ
Yes
10 MΩ
Yes
10 MΩ
● 0 to 3000 ohms
No
● 0 to 6000 ohms
Yes
— Input resistance (0 to 6000 ohms)
● PTC
— Input resistance (PTC)
10 MΩ
Yes
10 MΩ
Thermocouple (TC)
Temperature compensation
— parameterizable
Yes
— internal temperature compensation
Yes
— external temperature compensation via RTD
Yes
— temperature compensation / at the analog input
module / parameterizable / for 0 °C reference junction
temperature
Yes; fixed value can be set
— Reference channel of the module
Yes
Cable length
● shielded, max.
800 m; for U/I, 200 m for R/RTD, 50 m for TC
Analog value generation for the inputs
Integration and conversion time/resolution per channel
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● Resolution with overrange (bit including sign), max.
16 bit
● Integration time, parameterizable
Yes
● Integration time (ms)
2,5 / 16,67 / 20 / 100 ms
● Basic conversion time, including integration time (ms)
9 / 23 / 27 / 107 ms
— additional conversion time for wire-break monitoring
9 ms (to be considered in R/RTD/TC measurement)
— additional conversion time for resistance
measurement
150 ohm, 300 ohm, 600 ohm, Pt100, Pt200, Ni100: 2 ms, 6000 ohm, Pt500,
Pt1000, Ni1000, LG-Ni1000, PTC: 4 ms
● Interference voltage suppression for interference
frequency f1 in Hz
400 / 60 / 50 / 10 Hz
● Time for offset calibration (per module)
Basic conversion time of the slowest channel
Smoothing of measured values
● parameterizable
Yes
● Step: None
Yes
● Step: low
Yes
● Step: Medium
Yes
● Step: High
Yes
Encoder
Connection of signal encoders
● for voltage measurement
Yes
● for current measurement as 2-wire transducer
Yes
— Burden of 2-wire transmitter, max.
820 Ω
● for current measurement as 4-wire transducer
Yes
● for resistance measurement with two-wire connection
Yes; Only for PTC
● for resistance measurement with three-wire connection
Yes; All measuring ranges except PTC; internal compensation of the cable
resistances
● for resistance measurement with four-wire connection
Yes; All measuring ranges except PTC
Errors/accuracies
Linearity error (relative to input range), (+/-)
0.02 %
Temperature error (relative to input range), (+/-)
0.005 %/K; With TC type T 0.02 ± % / K
Crosstalk between the inputs, max.
-80 dB
Repeat accuracy in steady state at 25 °C (relative to input
range), (+/-)
0.02 %
Temperature error of internal compensation
±6 °C
Operational error limit in overall temperature range
● Voltage, relative to input range, (+/-)
0.3 %
● Current, relative to input range, (+/-)
0.3 %
● Resistance, relative to input range, (+/-)
0.3 %
● Resistance thermometer, relative to input range, (+/-)
Ptxxx standard: ±1.5 K, Ptxxx climate: ±0.5 K, Nixxx standard: ±0.5 K, Nixxx
climate: ±0.3 K
● Thermocouple, relative to input range, (+/-)
Type B: > 600 °C ±4.6 K, type E: > -200 °C ±1.5 K, type J: > -210 °C ±1.9 K,
type K: > -200 °C ±2.4 K, type N: > -200 °C ±2.9 K, type R: > 0 °C ±4.7 K, type
S: > 0 °C ±4.6 K, type T: > -200 °C ±2.4 K
Basic error limit (operational limit at 25 °C)
● Voltage, relative to input range, (+/-)
0.1 %
● Current, relative to input range, (+/-)
0.1 %
● Resistance, relative to input range, (+/-)
0.1 %
● Resistance thermometer, relative to input range, (+/-)
Ptxxx standard: ±0.7 K, Ptxxx climate: ±0.2 K, Nixxx standard: ±0.3 K, Nixxx
climate: ±0.15 K
● Thermocouple, relative to input range, (+/-)
Type B: > 600 °C ±1.7 K, type E: > -200 °C ±0.7 K, type J: > -210 °C ±0.8 K,
type K: > -200 °C ±1.2 K, type N: > -200 °C ±1.2 K, type R: > 0 °C ±1.9 K, type
S: > 0 °C ±1.9 K, type T: > -200 °C ±0.8 K
Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency
● Series mode interference (peak value of interference <
rated value of input range), min.
40 dB
● Common mode voltage, max.
10 V
● Common mode interference, min.
60 dB
Interrupts/diagnostics/status information
Diagnostics function
Yes
Alarms
● Diagnostic alarm
Yes
● Limit value alarm
Yes; two upper and two lower limit values in each case
Diagnoses
● Monitoring the supply voltage
Yes
● Wire-break
Yes; Only for 1 to 5 V, 4 to 20 mA, TC, R, and RTD
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● Overflow/underflow
Yes
Diagnostics indication LED
● RUN LED
Yes; green LED
● ERROR LED
Yes; red LED
● Monitoring of the supply voltage (PWR-LED)
Yes; green LED
● Channel status display
Yes; green LED
● for channel diagnostics
Yes; red LED
● for module diagnostics
Yes; red LED
Potential separation
Potential separation channels
● between the channels
No
● between the channels, in groups of
8
● between the channels and backplane bus
Yes
● between the channels and the power supply of the
electronics
Yes
Permissible potential difference
between the inputs (UCM)
20 V DC
Between the inputs and MANA (UCM)
10 V DC
Isolation
Isolation tested with
707 V DC (type test)
Standards, approvals, certificates
Suitable for applications according to AMS 2750
Yes; Declaration of Conformity, see online support entry 109757262
Suitable for applications according to CQI-9
Yes; Based on AMS 2750 E
product functions / security / header
signed firmware update
No
data integrity
No
Ambient conditions
Ambient temperature during operation
● horizontal installation, min.
-25 °C; From FS08
● horizontal installation, max.
60 °C
● vertical installation, min.
-25 °C; From FS08
● vertical installation, max.
40 °C
Altitude during operation relating to sea level
● Installation altitude above sea level, max.
5 000 m; Restrictions for installation altitudes > 2 000 m, see manual
Dimensions
Width
35 mm
Height
147 mm
Depth
129 mm
Weights
Weight, approx.
310 g
Other
Note:
Additional basic error and noise for integration time = 2.5 ms: Voltage: ±250 mV
(±0.02%), ±80 mV (±0.05%), ±50 mV (±0.05%); resistance: 150 ohms ±0.02%;
resistance thermometer: Pt100 climate: ±0.08 K, Ni100 climate: ±0.08 K;
thermocouple: Type B, R, S: ±3 K, type E, J, K, N, T: ±1 K
last modified:
4/25/2024
6ES75317KF000AB0
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5/15/2024
Subject to change without notice
© Copyright Siemens