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      ABB AX521
      ABB AX521

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      Configurable mixed analog input/output module

      AX521

      Spare Part Number

      PN1SAP250100R0001

      Product Information:

      ABB AX521 is a mixed analog input/output module for AC500 and S500 automation systems. It provides four individually configurable analog inputs for voltage, current and resistance-temperature signals together with four voltage/current analog outputs, all with 12-bit resolution including sign. The module is supplied with 24 V DC process voltage and is galvanically isolated from the internal electronics and other modules.

      Product image is representative; revision or series may vary. Contact us to request a specific version.
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        • PRODUCT OVERVIEW

          What is this product?

          ABB AX521, order code 1SAP250100R0001, is a mixed analog input/output module for AC500 and S500 automation systems. It combines four individually configurable analog inputs for voltage, current and resistance-temperature signals with four analog outputs for voltage or current, using 12-bit resolution including sign. ABB permits local operation at an AC500 CPU or remote expansion through DC505-FBP and DC551-CS31 interfaces, with module-wise galvanic isolation supporting controlled signal integration.

          Official source

          ABB AX521 data sheet 3ADR010036 and AC500 hardware documentation identify 1SAP250100R0001, the channel configuration, signal ranges and active lifecycle.
        • APPLICATIONS

          Where it may be used

          Use AX521 only after the signal ranges, terminal assignment, 24 V DC process supply and host interface are matched to the engineered AC500 installation.

          Mixed Sensor Acquisition

          Connects configured voltage, current or Pt/Ni temperature signals to four analog inputs.

          Analog Actuator Control

          Provides four individually configured voltage or current outputs for field devices.

          Local AC500 Expansion

          Adds mixed analog channels beside a compatible AC500 CPU and terminal unit.

          Remote S500 I/O

          Extends analog I/O through documented DC505-FBP or DC551-CS31 interfaces.
      Technical specifications for

      AX521

      0 TECHNICAL PARAMETERS
      • Manufacturer:
        ABB
      • Product Category:
        PLC and Machine Control
      • Spare Part Number:
        1SAP250100R0001
      • Product Type:
        Analog input/output module
      • Analog Inputs:
        4 configurable channels
      • Analog Outputs:
        4 configurable channels
      • Input Ranges:
        0...10 V; -10...+10 V; 0/4...20 mA; Pt100/Pt1000/Ni1000
      • Output Ranges:
        -10...+10 V; 0...20 mA; 4...20 mA
      • Resolution:
        12 bits including sign
      • Process Supply:
        24 V DC
      • Galvanic Isolation:
        Module-wise
      • Input Group:
        1 group of 4 channels
      • Output Group:
        1 group of 4 channels
      • Supported Installation:
        Local AC500 CPU or remote DC505-FBP/DC551-CS31
      • Stock Availability:
        3
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      BUYER INFORMATION

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        Factory Sealed

        Unused product with the original factory seal intact; packaging age or storage marks may still be present.

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      • 02

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      • 03

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        New and current product sourced through the manufacturer or authorized supply channel when expressly confirmed in the quotation.

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      Alternative Names

      AX521 AX 521 1SAP250100R0001 1SAP 250 100 R0001 AX521 1SAP250100R0001

      Information

      Overview Manuals Signal Configuration Installation Paths Commissioning Checks

      Features:

      • Four configurable analog inputs support voltage, current, Pt100, Pt1000 and Ni1000 signals.
      • Four analog outputs support voltage and current ranges with 12-bit resolution including sign.
      • Module-wise galvanic isolation supports local AC500 or remote S500 installation.

      AX521 is ABB order code 1SAP250100R0001 for mixed analog acquisition and control. Match the terminal unit, configured signal range, process supply and host interface before commissioning.

      Official source: ABB AX521 data sheet 3ADR010036 and AC500 hardware documentation identify 1SAP250100R0001, the channel configuration, signal ranges and active lifecycle.
      AX521 technical documentation and verified Moore Automated resources.

      Important Notice: Confirm the complete model, revision and installed system before replacement.

      Input and output ranges

      Configure each AX521 input for the documented voltage, current or resistance-temperature range and each output for the required voltage or current range. Confirm the scaling, engineering units and terminal assignment in the AC500 application before enabling field signals.

      Local or remote expansion

      ABB permits AX521 installation locally at a compatible AC500 CPU or as remote S500 expansion through DC505-FBP or DC551-CS31. Match the terminal unit, I/O-bus position and process-supply wiring to the selected architecture before fitting the module.

      Pre-start verification

      Apply 24 V DC process power only after checking channel polarity, shield grounding, configured ranges and terminal wiring. Then review the UP and channel-error LEDs, validate raw values against known signals and confirm safe output behavior before returning the machine to automatic operation.

      Technical notes

      ABB AX521, order code 1SAP250100R0001, combines four configurable analog inputs and four analog outputs at 12-bit resolution including sign. Inputs support voltage, current and Pt/Ni resistance-temperature measurements; outputs support voltage and current ranges. Confirm the selected range, terminal unit, 24 V DC process supply, galvanic-isolation boundary and AC500 or remote-interface placement before wiring and commissioning.

      Signal-Range and Terminal-Unit Verification

      Engineering check: Before wiring AX521, assign each of its four analog inputs and four analog outputs to the correct voltage, current or resistance range. Confirm the installed terminal unit, 24 V DC process supply, return paths and sensor power arrangement.

      Analog Calibration and Fault Simulation

      Acceptance test: Apply traceable values at low, mid and high points on every used channel. Verify signed 12-bit scaling, output readback and channel order, then simulate an open sensor and overrange condition to prove the configured diagnostics.

      Customs & shipping dimensions / weight

      • Packed shipping dimensions
        Not officially confirmed
        Official manufacturer sources reviewed for ABB AX521 do not state packed dimensions.
      • Packed shipping weight
        Not officially confirmed
        Official manufacturer sources reviewed for ABB AX521 do not state packed weight.
      • HS / customs code
        Not officially confirmed
        Verify the applicable classification for the destination before shipment.
      • Country of origin
        Not officially confirmed
        Verify from the item nameplate or COO.
      • Ships from
        Xiamen, Fujian, China
        Dispatch location is confirmed in the written quotation.
      • Customs documents
        Confirmed for the destination
        Available document scope is stated in the written quotation.
      PRODUCT & ORDER FAQS

      Questions buyers ask about AX521

      • How can the exact AX521 module be verified?

        Confirm AX521 and order code 1SAP250100R0001 on the label; compare the terminal unit and AC500 or remote-interface configuration.

      • Which analog channels are available?

        AX521 provides four configurable analog inputs and four configurable analog outputs with 12-bit resolution including sign.

      • Where can AX521 be installed?

        ABB documents local installation at an AC500 CPU or remote expansion through DC505-FBP or DC551-CS31.

      • What must be checked before wiring?

        Verify the configured voltage, current or RTD range, the TU515/TU516 terminal assignment, 24 V DC process supply and shield grounding.

      • Is AX521 available from stock?

        Moore Automated confirms current quantity and supplied condition in writing before quotation.

      • What warranty is included?

        The supplied AX521 includes a one-year Moore Automated warranty; inspection and condition are stated in the quotation.

      • What is the dispatch time?

        The listing is set for three-day fast dispatch after stock, inspection and destination requirements are confirmed.

      • Which ABB documents support these specifications?

        ABB AX521 data sheet 3ADR010036 and AC500 hardware documentation define the order code, channel count, ranges and lifecycle.
      All FAQ
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          WHY BUYERS WORK WITH MOORE AUTOMATED

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            Over 20 years of experience in industrial automation and hard-to-source legacy parts.

          • Product Lifecycle Stage

            Active / Available from OEM

            ABB lists AX521 order code 1SAP250100R0001 in the active lifecycle phase. Moore Automated supplies inspected ABB analog I/O replacement modules and spare parts matched to the exact order code, terminal unit and host configuration. Precise verification and responsive sourcing help reduce AC500 maintenance downtime.

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          Moore Disclaimer: Moore Automated's sales automation equipment and related solutions are intended for industrial automation and business operational efficiency improvement purposes only. Product information, technical parameters, and application cases are for reference only and do not constitute an absolute guarantee of performance for any specific industry, scenario, or final application. Actual equipment performance may vary depending on factors such as the usage environment, system integration method, and maintenance conditions. Users should confirm compatibility and safety based on professional technical assessments. Moore Automated assumes no liability for any direct or indirect losses caused by improper use, modification, or failure to operate according to specifications, to the extent permitted by law.

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