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      6ES7521-1BH00-0AB0

      SIMATIC S7-1500 SM 521 16-Channel Digital Input HF Module

      Product Describe：

      Siemens 6ES7521-1BH00-0AB0 supports configurable input delays, diagnostics, hardware interrupts, and fast count acquisition for demanding machine and process applications.

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      Technical specifications Information Alternative names Technical notes FAQ

      Technical specifications for 6ES7521-1BH00-0AB0

      Technical specifications for 6ES7521-1BH00-0AB0

      • Manufacturer:
        Siemens
      • Product Category:
        PLC Systems
      • Spare Part Number:
        6ES7521-1BH00-0AB0
      • Estimated shipping dimensions:
        3.5x12.5x14.6cm
      • Weight:
        0.529 lbs (0.22 kg)
      • Tariff Code:
        8537101101
      • Counliy of origin:
        Germany
      • Module:
        SM 521 DI 16x24 V DC HF
      • Digital inputs:
        16 in one group
      • Counter-capable inputs:
        2
      • Counter frequency:
        Up to 6 kHz
      • Counter width:
        32 bit
      • Input delay:
        0.05 to 20 ms configurable
      • IEC input type:
        IEC 61131 Type 3
      • Diagnostics:
        Supported
      • Front connector:
        Ordered separately
      • Weight:
        0.240 kg (0.529 lb) product weight — official manufacturer data for the exact model.
      • Dimensions:
        35 × 147 × 129 mm (W × H × D) — Siemens current official technical data.
      View as PDF Ask for Quote

      Information

      Information

      Overview Manuals Common Applications Product Precautions
      The Siemens 6ES7521-1BH00-0AB0 is an S7-1500 SM 521 high-feature digital input module with sixteen 24 V DC channels. It acquires standard input states and can use two channels for counter functions up to the published frequency.
      • SM 521 DI 16x24 V DC HF
      • 16 in one group
      • 2
      • Up to 6 kHz

      The HF feature set supports configurable input delays, diagnostics, hardware interrupts, and fast count acquisition for demanding machine and process applications.

      Important Notice: Use the complete 6ES7521-1BH00-0AB0 code and verify the physical nameplate and current Siemens documentation before installation or replacement.

      Apter Power 6ES7521-1BH00-0AB0 Manuals and Guides

      Important Notice: These are two separate Apter Power documents prepared from the manufacturer-published Siemens information named in each document. Confirm the physical nameplate, current Siemens documents, and host-system requirements before installation or replacement.

      Diagnostic digital input
      Detect field-wire and channel conditions through the HF feature set.
      Fast event counting
      Use two channels for pulse counts up to 6 kHz.
      Machine control
      Acquire sixteen inputs with configurable filters and interrupts.
      Read and follow the exact Siemens documentation and host-equipment instructions before use. Verify 6ES7521-1BH00-0AB0 from the physical nameplate.
      1
      Order and wire the correct front connector
      2
      Configure input delay and counter use in TIA Portal
      3
      Verify 24 V DC group potential
      4
      Back up the hardware project
      5
      Test diagnostics and interrupts during commissioning

      Alternative Names

      Alternative Names

      6ES7521-1BH00-0AB0 6ES7521 1BH00 0AB0 Siemens 6ES7521-1BH00-0AB0

      Technical notes

      Technical notes

      Use the complete 6ES7521-1BH00-0AB0 identifier. Siemens lists 6ES7521-1BH00-0AB0 as a PM300 active product. Values not published in the cited Siemens source are intentionally not inferred.

      FAQS

      • What is Siemens 6ES7521-1BH00-0AB0?
        The Siemens 6ES7521-1BH00-0AB0 is an S7-1500 SM 521 high-feature digital input module with sixteen 24 V DC channels. It acquires standard input states and can use two channels for counter functions up to the published frequency.
      • What is the specific function of 6ES7521-1BH00-0AB0?
        The HF feature set supports configurable input delays, diagnostics, hardware interrupts, and fast count acquisition for demanding machine and process applications.
      • Which signals, power, or data does 6ES7521-1BH00-0AB0 handle?
        Module: SM 521 DI 16x24 V DC HF. Digital inputs: 16 in one group. Counter-capable inputs: 2. Counter frequency: Up to 6 kHz.
      • Which system uses 6ES7521-1BH00-0AB0?
        6ES7521-1BH00-0AB0 belongs to the SIMATIC S7-1500 context described in the cited Siemens source.
      • Which components are compatible with 6ES7521-1BH00-0AB0?
        SIMATIC S7-1500 CPU and rack configuration supporting SM 521 HF 40-pin front connector specified for the module 24 V DC sensors, counter sources, and TIA Portal project settings within the limits
      • Where is 6ES7521-1BH00-0AB0 applied?
        Diagnostic digital input: Detect field-wire and channel conditions through the HF feature set. Fast event counting: Use two channels for pulse counts up to 6 kHz. Machine control: Acquire sixteen inputs with configurable filters and interrupts.
      • What is the lifecycle status of 6ES7521-1BH00-0AB0?
        Siemens lists 6ES7521-1BH00-0AB0 as a PM300 active product.
      • What must be checked before installing 6ES7521-1BH00-0AB0?
        Order and wire the correct front connector Configure input delay and counter use in TIA Portal Verify 24 V DC group potential Back up the hardware project Test diagnostics and interrupts during commissioning
      Trusted by 5,000+ plants worldwide | Backed by our vast inventory of top-tier control parts, modules and cards, fast shipments are dispatched to cover your urgent needs. ABOUT US >>
      Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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