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        Siemens 6ES7331-7NF10-0AB0
        Siemens 6ES7331-7NF10-0AB0
        Siemens 6ES7331-7NF10-0AB0
        Siemens 6ES7331-7NF10-0AB0
        Siemens 6ES7331-7NF10-0AB0
        Siemens 6ES7331-7NF10-0AB0
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        6ES7331-7NF10-0AB0

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        The 6ES7331-7NF10-0AB0 SM 331 analog input module provides 8 channels with 16‑bit resolution, supports voltage/current, programmable diagnostics, limit monitoring, and electrical isolation for SIMATIC S7‑300.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
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        Technical specifications for 6ES7331-7NF10-0AB0

        • Manufacturer:
          Siemens
        • Part Number:
          6ES7331-7NF10-0AB0
        • Product Family:
          Siemens Simatic S7-300
        • Number of Inputs:
          8 (in 4 channel groups of 2)
        • Resolution:
          16 bits (15 bits + sign)
        • Input Ranges (Voltage):
          ±5 V, 1‑5 V, ±10 V (impedance 2 MΩ)
        • Input Ranges (Current):
          0‑20 mA, 4‑20 mA, ±20 mA (impedance 250 Ω)
        • Electrical Isolation:
          Yes (channels, backplane bus, power supply)
        • Isolation Test Voltage:
          500 V AC
        • Power Supply:
          24 V DC (max. 200 mA) + backplane bus (max. 100 mA)
        • Power Loss:
          typ. 3.0 W
        • Conversion Time (8‑ch mode):
          23‑95 ms per channel (depends on interference frequency)
        • Module Cycle Time (8‑ch):
          46‑190 ms
        • Module Cycle Time (4‑ch):
          10 ms
        • Interference Frequency Suppression:
          50/60/400 Hz or
        • Operational Error Limit:
          ±0.1% (voltage/current)
        • Basic Error Limit (25°C):
          ±0.05% (voltage/current)
        • Pain Point Solved:
          Solves the need for high‑precision, flexible analog input with programmable measurement types, diagnostics, and limit monitoring in a single 8‑channel module – reducing external signal conditioners and enabling fast cycle times (10 ms in 4‑channel mode) for real‑time control applications.
        • Weight:
          0.28 kg
        • Estimated shipping dimensions:
          4x11.5x12.5cm
        • Tariff Code:
          8517795000
        • Country of origin:
          Germany
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Application Operating Environment Monitoring and Control Features

        Features:

        • Supports voltage (±5 V, 1‑5 V, ±10 V) and current (0‑20 mA, 4‑20 mA, ±20 mA) with 16‑bit resolution.
        • Limit value monitoring, wire‑break detection, hardware interrupts at limit exceeded or end of cycle.
        • 4‑channel mode with 10 ms cycle time; full isolation between channels, backplane bus, and power supply (500 V AC test).
        The 6ES7331-7NF10-0AB0 accepts eight analog signals in four programmable groups of two channels each. Each group can be independently configured for voltage (±5 V, 1‑5 V, or ±10 V) or current (0‑20 mA, 4‑20 mA, or ±20 mA) with 16‑bit resolution (15 bits plus sign). Input impedance is 2 MΩ for voltage and 250 Ω for current. This flexibility allows a single module to handle mixed signal types – for example, four pressure transmitters (4‑20 mA) and four position feedbacks (±10 V) – without additional signal conditioners.

        The 6ES7331-7NF10-0AB0 includes comprehensive diagnostic capabilities. Each of the 8 channels can have programmable high and low limit values (range: -32512 to 32511). When a limit is exceeded, the module can generate a hardware interrupt to trigger immediate CPU action. Additionally, an end‑of‑cycle interrupt allows synchronization of user programs with the analog conversion cycle. Diagnostics include group error display (red SF LED), wire‑break detection (for 1‑5 V and 4‑20 mA ranges), and diagnostic interrupts that can be enabled per channel.

        The 6ES7331-7NF10-0AB0 offers two operating modes. In 8‑channel mode, all inputs are scanned sequentially with cycle times from 46 ms (400 Hz interference suppression) to 190 ms (50/60/400 Hz combined). In 4‑channel mode, only channels 0, 2, 4, and 6 are used, but the module cycle time drops to just 10 ms – ideal for fast closed‑loop control such as hydraulic positioning or high‑speed winding. The module is fully electrically isolated: channels are isolated from each other (in groups of 2), from the backplane bus, and from the 24 V power supply, with an isolation test voltage of 500 V AC.

        The 3500/15 106M1079-01 Bently Nevada Analog Input Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

        Siemens 6ES7331-7NF10-0AB0 Analog Input Module Manuals, Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        Siemens 6ES7331-7NF10-0AB0 Analog Input Module Specs

        General

        • Manufacturer Siemens
        • Model 6ES7331-7NF10-0AB0
        • Condition New Original ready stock
        • Product Family 6ES7331-7NF00-0AB0,6ES7331-7KF02-0AB0,6ES7331-7PF01-0AB0
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Precision Process Monitoring: Used for monitoring the temperature of compressors and motor bearings (with RTDs) or precision signals from pressure/flow transmitters.
        • Energy and Water Treatment: Data acquisition for oil and gas supply, drinking water purification, and distributed wastewater treatment plants.
        • Heavy Industry Control: Process control in the steel industry, power generation and distribution, and large machinery manufacturing.
        • Ambient Temperature: Standard operating temperature is 0°C to 60°C; certain expansion models support -40°C to 70°C.
        • Power Supply and Consumption: Rated load voltage is 24 V DC (with reverse polarity protection); typical power consumption is approximately 3 W.
        • Electrical Isolation: 500V AC electrical isolation between the channel and the backplane bus provides strong interference immunity.
        • Flexible Configuration: 8 input channels are divided into 4 groups, each independently programmable to set the measurement type (voltage +/-5/10V, current 4-20mA, etc.).
        • High-Speed ​​Updates: In "4-Channel Mode," the switching time is only 10 ms, suitable for monitoring rapidly changing signals.
        • Diagnostic Interruptions: Supports programmable diagnostic functions (such as parameter errors, open circuits, and short circuits to ground).
        Description
        The 6ES7331-7NF10-0AB0 is an 8‑channel analog input module for SIMATIC S7‑300 systems. It supports voltage (±5 V, 1‑5 V, ±10 V) and current (0‑20 mA, 4‑20 mA, ±20 mA) inputs with 16‑bit resolution. Each channel group is programmable for measurement type, range, and interference frequency suppression (50/60/400 Hz). 

        When using the 6ES7331-7NF10-0AB0, engineers benefit from four operating modes: 8‑channel mode (all inputs active) or 4‑channel mode (faster update). In 4‑channel mode, the module cycle time is only 10 ms. The module features electrical isolation between channels, backplane bus, and power supply. 

        The 6ES7331-7NF10-0AB0 offers programmable limit value monitoring for all 8 channels, with hardware interrupts when limits are exceeded or at the end of a conversion cycle. Smoothing options (none/low/medium/strong) reduce noise on fluctuating signals. 

        For distributed I/O applications, the 6ES7331-7NF10-0AB0 operates on ET 200M with compatible IM 153 interfaces. Note that non‑S7 PROFIBUS masters (DPV0 only) do not support hardware interrupts, disabling limit and end‑of‑cycle interrupts. 
        Alternative Names
        6ES7331-7NF00-0AB0 6ES7331-7KF02-0AB0 6ES7331-7PF01-0AB0 6ES7331-7NF10-0AB1
        Technical notes
        The 6ES7331-7NF10-0AB0 uses four internal ADCs; in 8‑channel mode, each ADC converts two channels sequentially (even then odd), while in 4‑channel mode, only even channels are used with a fixed 10 ms cycle time.For current measurement on the 6ES7331-7NF10-0AB0, the input impedance is 250 Ω
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        How fast is the 6ES7331-7NF10-0AB0 in 4‑channel mode?
        In 4‑channel mode, the 6ES7331-7NF10-0AB0 has a module cycle time of only 10 ms. The converted value settles to 100% within 80 ms and is updated every 10 ms. This is ideal for fast control loops.
        Does the 6ES7331-7NF10-0AB0 detect wire breaks?
        Yes. Wire‑break detection is available for 1‑5 V and 4‑20 mA ranges when activated. A diagnostic interrupt triggers upon underflow (-32768). Detection can take up to 2 seconds on voltage inputs or shunt connections.
        How should I handle unused channels on the 6ES7331-7NF10-0AB0?
        Set unused channels to "disabled" in the measuring method parameter. This reduces module cycle time. For specific ranges (e.g., 1‑5 V), parallel unused inputs with used ones. For 4‑20 mA, connect unused inputs in series with a shunt resistor.
        Can I use the 6ES7331-7NF10-0AB0 with non‑S7 PROFIBUS masters?
        Yes, but non‑S7 DPV0 masters do not support hardware interrupts. This disables limit value interrupts and end‑of‑cycle interrupts on the 6ES7331-7NF10-0AB0. All other parameters (ranges, smoothing, diagnostics) remain functional.

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