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 |
Select the voltage, current or resistance configuration before wiring. This module does not provide RTD or thermocouple linearization.
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Model Number
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6ES7431-1KF00-0AB0
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Analog voltage/current inputs
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8
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Resistance measurement channels
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4
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Resolution including sign
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13 bit
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Backplane supply
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5 V DC
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Backplane current, maximum
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350 mA
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Power loss, typical
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1.8 W
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Voltage input destruction limit
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50 V
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Continuous current input limit
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40 mA
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Maximum permissible input current
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50 mA
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Resistance excitation current
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1.67 mA
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Voltage measurement ranges
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1–5 V; ±1 V; ±10 V
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Voltage input resistance
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200 kΩ
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Current measurement ranges
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±20 mA; 4–20 mA
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Current input resistance
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80 Ω
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Resistance range
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0–600 Ω; usable range 0–500 Ω
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Shielded cable length
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200 m maximum
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Integration time per channel
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16.7 / 20 ms
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Conversion time per channel
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23 / 25 ms
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Conversion time for all channels
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184 / 200 ms
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Interference rejection frequencies
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50 / 60 Hz
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Voltage/current temperature drift
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±0.007%/K
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Resistance temperature drift
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±0.02%/K
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Operational voltage error, ±1 V
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±1%
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Operational voltage error, ±10 V
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±0.6%
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Operational voltage error, 1–5 V
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±0.7%
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Operational current error
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±1%
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Operational resistance error
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±1.25%; 0–500 Ω, four-wire
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Basic voltage error, ±1 V at 25 °C
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±0.7%
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Basic voltage error, ±10 V at 25 °C
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±0.4%
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Basic voltage error, 1–5 V at 25 °C
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±0.5%
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Basic current error at 25 °C
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±0.7%
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Basic resistance error at 25 °C
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±0.8%
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Backplane-to-analog isolation test
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2,120 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 6ES7431-1KF00-0AB0 is the SIMATIC S7-400 SM 431 analog input module for voltage, current and resistance measurement. It provides eight voltage or current inputs, with four channels available for resistance measurement. Its conversion resolution is 13 bits including the sign. The measurement configuration determines the usable range and channel allocation. Power is taken from the S7-400 backplane. This version does not provide direct RTD or thermocouple measurement.
The 6ES7431-1KF00-0AB0 brings conventional analog transmitter signals into an S7-400 automation station. Voltage and current modes accommodate suitable industrial measuring devices. Resistance acquisition supports appropriate resistive transducers with the specified wiring arrangement. The channel measurement method must match the connected device. Shielding and reference-potential connections require attention during installation. Check the configured measuring ranges before replacing an existing module.
Read compatible voltage and current transmitters in a SIMATIC S7-400 station with the channel range set to the connected signal.
Acquire supported resistance signals using the specified two-, three- or four-wire connection arrangement.
Supply analog measured values to the controller application for monitoring and control decisions.
No. This version measures resistance but does not provide the dedicated RTD or thermocouple input functions of other SM 431 variants.
Two- and three-wire connections include lead resistance. Four-wire measurement compensates the lead contribution in the supported resistance measurement arrangement.
A suitable external transmitter supply is required for the two-wire current connection.
No. This module does not provide parameterizable channel diagnostics. Account for that limitation in the application.
We check identification and condition before shipment and provide 12-month warranty support under the agreed terms.
Confirmed available stock is dispatched promptly after payment. Send quantity and destination for a shipping confirmation.
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.
In Practice: A German customer sent a mixed list of automation products and asked repeated questions about revisions, condition, photos, and delivery. Our team organized the requirements, checked every item, and replied point by point. The customer said our detailed communication made the purchasing decision easier and continued sending us new inquiries.
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