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          For 7MH4960-2AA01, Apter Power provides quotations, product manuals, product selection, and system matching.

        7MH4960-2AA01

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        1001 reviews ｜ Need a Specific Revision?
        Siemens 7MH4960-2AA01 is a SIWAREX WP231 single-channel legal-for-trade weighing module for full-bridge load cells in S7-1200 or standalone systems.
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        Ships by Wednesday, October 28
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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 7MH4960-2AA01

        • Manufacturer:
          Siemens
        • Part Number:
          7MH4960-2AA01
        • Product Family:
          Siemens Simatic S7-1200
        • Product Type:
          SIWAREX WP231 Single-Channel Weighing Module
        • Stock:
          1
        • Load-Cell Input Range:
          -4 to +4 mV/V
        • Load-Cell Wiring:
          4-conductor or 6-conductor full bridge
        • Bridge Resistance Range:
          40 to 4,100 Ω
        • Sampling Rate:
          100 Hz
        • Input Resolution:
          ±1,000,000 parts per mV/V
        • Digital Inputs:
          4
        • Digital Outputs:
          4
        • Maximum Output Current per Channel:
          0.5 A
        • Analog Outputs:
          1
        • Analog Output Ranges:
          0 to 20 mA; 4 to 20 mA
        • Maximum Analog Load:
          600 Ω
        • Ethernet Ports:
          1 x RJ45
        • RS485 Interfaces:
          1
        • Maximum RS485 Cable Length:
          1,000 m at up to 115 kbit/s
        • Rated Supply:
          24 V DC
        • Supply Range:
          19.2 to 28.8 V DC
        • Typical Power Loss:
          4.5 W
        • Protection Rating:
          IP20
        • Operating Temperature:
          -10 to +60 °C depending on mounting orientation
        • Weight:
          0.617 lbs (0.28 kg)
        • Estimated shipping dimensions:
          8.8x11x8.6cm
        • Tariff Code:
          8538909190
        • 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 Load Cell Field I/O Communication Scale Setup

        Features:

        • One full-bridge load-cell channel converts -4 to +4 mV/V signals at a 100 Hz sampling rate.
        • Digital I/O and one analog current output coordinate scale commands, status, and a configured weight signal.
        • Ethernet and RS485 provide separate communication paths for controller, engineering, junction-box, or display functions.
        Siemens 7MH4960-2AA01 connects one platform or hopper scale to an S7-1200 or standalone control arrangement.

        The load-cell circuit of 7MH4960-2AA01 accepts four- or six-conductor full bridges within the documented resistance range.

        Digital and communication interfaces let 7MH4960-2AA01 coordinate the weighing result with external equipment.

        The Siemens 7MH4960-2AA01 SIWAREX WP231 Single-Channel Weighing Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Siemens 7MH4960-2AA01 SIWAREX WP231 Single-Channel Weighing Module Manuals,Datasheets,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.

        Weighing-Signal Chain

        • Bridge input: One analog channel receives the millivolt-per-volt signal from a full-bridge load cell.
        • Sense wiring: Four- or six-conductor connection determines how excitation and sense conductors reach the bridge.
        • Measurement range: Configured weighing spans remain inside the documented -4 to +4 mV/V input boundary.
        • Cable limit: The shielded SIWAREX load-cell cable path can extend to the documented maximum length.

        Control and Status Connections

        • Digital inputs: Four parameterizable inputs receive control or status signals at 24 V DC.
        • Digital outputs: Four protected outputs switch external loads within the channel and module current limits.
        • Analog output: One current output reproduces a configured value over 0–20 mA or 4–20 mA.
        • Isolation: The digital and analog paths use the documented isolation boundaries from the module electronics.

        Engineering and Display Paths

        • Ethernet: The RJ45 port carries Ethernet communication for the configured control or engineering connection.
        • RS485: The serial interface connects SIWATOOL, SIWAREX DB, or a supported remote display.
        • Port roles: The Ethernet and RS485 interfaces do not replace the separate load-cell measurement circuit.
        • Diagnostics: Supply, wire-break, short-circuit, and maintenance conditions are reported through module diagnostics and LEDs.

        Configuration Boundaries

        • Legal-for-trade use: The installed scale must follow the verification rules of the applicable country.
        • Sampling: The 100 Hz measurement cycle defines the timing of weight updates.
        • Bridge resistance: The connected full bridge must remain within the documented resistance range.
        • Mounting: The module installs on a standard DIN rail and uses the specified orientation-dependent ambient limits.
        Description
        Siemens 7MH4960-2AA01 is a SIWAREX WP231 single-channel weighing module for platform or hopper scales using full-bridge load cells. It converts a load-cell signal from -4 mV/V to +4 mV/V into weighing data at a 100 Hz sampling rate for S7-1200 or standalone operation.

        A four- or six-conductor load-cell circuit connects to 7MH4960-2AA01, with bridge resistance and cable length defining the measurement boundary. The module can evaluate one analog weighing channel while its diagnostic functions monitor the supply, wire continuity, and short circuits.

        Four digital inputs, four protected digital outputs, and one analog current output let 7MH4960-2AA01 exchange commands and status with adjacent equipment. The 0–20 mA or 4–20 mA analog output is separate from the load-cell input and can reproduce a configured weighing value.

        Ethernet on 7MH4960-2AA01 links engineering or controller communication through its RJ45 port, while the RS485 interface serves SIWATOOL, SIWAREX DB, or a compatible remote display. The module receives 24 V DC through its protected supply path and mounts on a standard DIN rail.
        Alternative Names
        7MH49602AA01 7MH4960 2AA01 7MH 4960 2AA01 Siemens 7MH4960-2AA01 7MH4960-2AA01 SIWAREX WP231 7MH4960-2AA01 Weighing Module 7MH4960-2AA0I 7MH496O-2AA01
        Technical notes
        The Ethernet, RS485, and load-cell interfaces on Siemens 7MH4960-2AA01 serve separate engineering, display, and weighing-signal paths.
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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
        Why does 7MH4960-2AA01 show an unstable weight with a stationary load?
        Check the 7MH4960-2AA01 load-cell wiring, shield, excitation, sense conductors, bridge resistance, grounding, mechanical vibration, and configured filtering.
        Why does 7MH4960-2AA01 report wire break after a load-cell replacement?
        Verify the 7MH4960-2AA01 four- or six-wire assignment, connector continuity, bridge resistance, cable shield, and load-cell excitation path.
        Why can SIWATOOL not connect to 7MH4960-2AA01 over RS485?
        Check the 7MH4960-2AA01 RS485 wiring, shield, baud rate, station address, termination, interface selection, and the active communication partner.
        Why does the 4–20 mA output of 7MH4960-2AA01 not follow the displayed weight?
        Confirm the 7MH4960-2AA01 analog-output range, assigned process value, scaling limits, load resistance, wiring, and diagnostic status.
        What should be checked before using 7MH4960-2AA01 for legal-for-trade weighing?
        Confirm the 7MH4960-2AA01 firmware, approved scale configuration, load cells, sealing, parameter protection, calibration records, and local verification requirements.
        Why do digital outputs on 7MH4960-2AA01 switch off under load?
        Check the 7MH4960-2AA01 24 V supply, output current per channel, total module current, short-circuit protection, load wiring, and output diagnostics.

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