Home > Products > SIEMENS > SIMATIC S7 Series
Minimum Order Quantity |
1 Piece |
Price |
Contact for Jim |
Packaging Details |
Original new Factory Sealed |
Delivery Time |
3–7 Days |
Payment Terms |
T/T |
Shipping Method |
DHL / FedEx / UPS / TNT |
Supply Ability |
In stock |
Confirm sensor type, paired RTD/resistance wiring and front-connector scope. Wire-break monitoring applies only to the specified measurement modes.
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Model Number
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6ES7531-7KF00-0AB0
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Voltage/current/thermocouple inputs
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8
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Resistance/RTD inputs
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4
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Maximum conversion resolution
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16 bit including sign and overrange
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Rated DC supply
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24 V DC
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Permissible supply range
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19.2–28.8 V DC
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Current consumption, maximum
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240 mA at 24 V DC
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Sensor-supply current, maximum
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20 mA; up to 47 mA per channel for <10 s
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Backplane power consumption
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0.7 W
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Power loss, typical
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2.7 W
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Voltage input destruction limit
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28.8 V
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Current input destruction limit
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40 mA
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Voltage measurement ranges
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1–5 V; ±0.05 / ±0.08 / ±0.25 / ±0.5 / ±1 / ±2.5 / ±5 / ±10 V
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Input resistance, 1–5 V and ±5/±10 V
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100 kΩ
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Input resistance, remaining supported voltage ranges
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10 MΩ
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Current measurement ranges
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0–20 mA; ±20 mA; 4–20 mA
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Current input burden
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25 Ω plus approximately 42 Ω PTC overvoltage protection
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Thermocouple types
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B, E, J, K, N, R, S, T
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RTD types
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Ni100, Ni1000, LG-Ni1000; Pt100, Pt200, Pt500, Pt1000
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Resistance ranges
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0–150 / 300 / 600 / 6,000 Ω; PTC
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Resistance/RTD input resistance
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10 MΩ
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Sensor excitation, low-resistance ranges
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1.25 mA for 150/300/600 Ω, Pt100/Pt200/Ni100
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Sensor excitation, high-resistance ranges
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0.625 mA for 6,000 Ω, Pt500/Pt1000/Ni1000/LG-Ni1000
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PTC excitation current
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0.472 mA
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Shielded cable lengths
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800 m U/I; 200 m R/RTD; 50 m TC maximum
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Integration-time selections
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2.5 / 16.67 / 20 / 100 ms
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Basic conversion-time selections
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9 / 23 / 27 / 107 ms
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Additional wire-break-monitoring time
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9 ms for applicable R/RTD/TC measurements
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Interference rejection frequencies
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400 / 60 / 50 / 10 Hz
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Two-wire transmitter burden, maximum
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820 Ω
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Linearity error
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±0.02% of input range
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Repeatability at 25 °C
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±0.02% of input range
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Voltage/current/resistance operational error
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±0.3% of input range
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Common-mode voltage
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10 V maximum relative to MANA
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Isolation type-test voltage
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707 V DC
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Sales
Jim Pei
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Email
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Phone/Whatsapp
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Siemens 6ES7531-7KF00-0AB0 is the AI 8xU/I/RTD/TC ST analog input module for SIMATIC S7-1500 and ET 200MP. It accepts voltage, current and thermocouple signals on eight channels. Resistance and RTD measurement use four channels. The module provides conversion resolution up to 16 bits. Its external supply powers the electronics and supported sensor-supply arrangement. The supplied connection accessories exclude the front connector.
The 6ES7531-7KF00-0AB0 integrates several sensor technologies within a standard analog input module. Channel configuration determines the measuring method, range and wire-break monitoring behavior. Supported calibration and parameter changes can be performed in RUN under the specified engineering conditions. Diagnostic functions report relevant supply and measurement conditions. The inputs are organized as a shared group rather than isolated individually. Confirm the sensor types, front connector and controller configuration before installation.
Read supported voltage, current, resistance, RTD or thermocouple sensors using the correct channel configuration.
Configure the supported sensor characteristic and suitable thermocouple reference compensation for the application.
Use supported RUN-state calibration and parameter changes within the applicable engineering and system requirements.
The product scope includes the listed infeed/shielding accessories and U-connector, but not the front connector.
RTD and resistance measurements use the specified paired connection arrangement and reduced channel count.
No. The inputs are arranged in a shared group; isolation from the backplane does not mean channel-to-channel separation.
It is supported only for the specified signal types and ranges. Check the configured measurement mode.
We verify the reference and condition and confirm the accessory scope before packing. Agreed 12-month warranty support applies.
Available stock is dispatched promptly after payment, and the courier schedule is confirmed for your destination.
With 20+ years of industry experience, we serve customers worldwide and have built long-term relationships across the UK, Russia, UAE, India, Venezuela, and more.
Our experienced team provides reliable pre-sales and after-sales support, helping customers select suitable products and resolve purchasing concerns.
We supply leading automation brands covering PLCs, DCS, I/O modules, drives, motors, power supplies, communication modules, and more.
A wide range of products is available from stock, including discontinued, obsolete, and hard-to-find parts, helping reduce sourcing time.
We value long-term cooperation and treat every customer with honesty, respect, responsibility, and care.
From a single replacement part to complete automation projects, we are ready to support your needs and build a long-term partnership.
Our team members have an average of more than 10 years of industry experience. We have worked with customers worldwide, including those from India, Germany, Sweden, Italy, Russia, Venezuela, Israel, and many other countries. Throughout our careers, we have collectively completed over 3,000 orders and established long-term business relationships with customers across nearly 30 countries.
We can often identify a product’s manufacturer, series, configuration, and function from its model number or nameplate photo. We also understand how revisions, firmware, and specifications affect compatibility and whether an alternative model can be used safely.
In Practice: An Indian customer urgently needed a discontinued control module after several suppliers reported no stock. We identified its exact revision and function from the nameplate, checked compatible alternatives, and contacted factory and warehouse channels to locate matching inventory. After installation, the customer confirmed that the module operated correctly and later asked us to source additional spare parts.
Our team treats every inquiry sincerely and answers every question patiently. Even for complex requests, we verify and respond to each detail instead of providing a rushed or uncertain answer.
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