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      TWDLMDA20DRT

      Twido Modular Base Controller
      Product image is representative; revision or series may vary. Contact us to request a specific version.

      Product Describe：

      Schneider Electric TWDLMDA20DRT is an extendable Twido modular base controller with a 24 V DC supply, twelve discrete inputs and eight mixed relay/transistor outputs. It integrates field signals and logic in an existing Twido control installation.
      • Manufacturer part number
        TWDLMDA20DRT
      • Shipping
        Swift global dispatch
      • Condition
        New, original product
      • Shipping size (est.)
        15.6cm × 9cm × 6.8cm
      • Country of Origin
        France

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      What happens after you enquire

      • 0

        Review your reference

        Send the full TWDLMDA20DRT marking, quantity and current label photos. We review the controller execution and any version details that need clarification.

      • 1

        Confirm the offer

        Check the quoted TWDLMDA20DRT reference, condition, included items and expected dispatch date before approving your order.

      • 2

        Arrange dispatch

        Confirm the delivery details for TWDLMDA20DRT and receive the tracking number when it becomes available.

      • Match the complete marking

        Include the full TWDLMDA20DRT marking and any visible revision or assembly number. Keep the exact reference on your enquiry and quotation.

      • Check the offered item before ordering

        Request current label and connector photos for TWDLMDA20DRT. Compare the offered controller with the installed I/O arrangement and the approved machine program.

      Technical specifications for TWDLMDA20DRT

      • Manufacturer:
        Schneider Electric
      • Product Category:
        PLC Systems
      • Spare Part Number:
        Schneider Electric TWDLMDA20DRT
      • Weight:
        0.54 kg
      • Tariff Code:
        8537101190
      • Controller series:
        Twido modular
      • Primary supply:
        24 V DC
      • Discrete inputs:
        12, 24 V DC
      • Discrete outputs:
        8 total: 6 relay and 2 transistor
      • Discrete I/O total:
        20
      • Published power:
        19 W
      • Published resolution:
        9 bits
      • Manufacturer status:
        Discontinued
      • Expansion role:
        Extendable modular base
      View as PDF Ask for Quote

      Information

      Overview Downloads Applications / Compatibility Product Precautions
      • TWDLMDA20DRT provides the logic and field-I/O base for an existing Twido installation; its application depends on the programmed sequence and fitted expansion.
      I/O architecture: 12 inputs and 8 mixed outputs
      System role: Expandable Twido controller base
      Service planning: Program and field wiring must match
      The controller provides twelve 24 V DC discrete inputs for field contacts and eight discrete outputs, comprising six relay and two transistor points. The mixed output construction matters when replacing a base: relay loads and transistor-driven circuits must retain their original wiring and ratings.

      Expansion I/O and the installed application program define the complete machine function. Record the populated expansion modules, terminal assignments, communication arrangement and Twido program before replacement; the base controller alone does not define every field point.

      Schneider marks TWDLMDA20DRT discontinued and identifies Modicon M221 plus suitable expansion as migration options. A migration requires I/O mapping, program conversion, electrical checks and site acceptance; it is not an automatic one-for-one board swap.
      Controller platform reference: Schneider Electric Twido modular control system. Match the installed configuration and interfaces.
      Technical downloads for Schneider Electric TWDLMDA20DRT: an Apter Power technical reference and installation verification guide.
      Apter Power references for TWDLMDA20DRT; retain the original Twido project and follow approved site procedures during service.
      Installed Twido application: Use the exact base where the panel drawings and saved program call for TWDLMDA20DRT.

      Migration compatibility: M221 alternatives require program and electrical redesign; do not assume interchangeability.
      Installation and commissioning checks for Schneider Electric TWDLMDA20DRT.
      Record the installed program

      Back up the Twido application, parameters and communication settings before removing the base.

      Separate output technologies

      Identify all six relay and two transistor load circuits before reconnecting field wiring.

      Verify DC supply

      Confirm polarity, protective devices and available 24 V DC capacity at the controller terminals.

      Map expansion hardware

      Document each expansion module, order and bus connection against the original design.

      Protect outputs during test

      Isolate loads as required and validate output actuation under the approved commissioning procedure.

      Revalidate any migration

      If changing to M221, test all I/O, logic, communications and safety-related external circuits as a new configuration.

      Alternative Names

      Schneider Electric TWDLMDA20DRT

      Technical notes

      Controller boundary: The base has 20 onboard discrete points; expansion modules and application code determine the finished machine behavior.

      Output allocation: Six relay and two transistor outputs must be mapped to their original load circuits.

      Migration review: M221 replacement guidance requires a separate engineering and commissioning plan.

      FAQ View All FAQ

      • Which backup should be retained before replacing TWDLMDA20DRT?
        Keep the original Twido project, controller settings, I/O allocation, communication parameters and an as-found wiring record.
      • Can a Modicon M221 replace TWDLMDA20DRT without changing the program?
        No direct equivalence is established; plan software conversion, terminal mapping, expansion selection and validation.
      • How should the mixed outputs on TWDLMDA20DRT be identified?
        Trace each terminal to the site drawing and distinguish relay contact loads from the two transistor outputs.
      • What can cause a new TWDLMDA20DRT to show healthy logic while a load remains off?
        Check the output type, field supply, protective device, terminal assignment and program condition.
      • How should expansion modules be checked with TWDLMDA20DRT?
        Record exact module order codes and positions, then confirm the bus and power design before installation.
      • Which evidence is useful when a TWDLMDA20DRT input does not change state?
        Compare field voltage, common wiring, terminal status and the corresponding project variable online.
      • What should be checked before commissioning a migrated TWDLMDA20DRT installation?
        Validate the converted program, I/O list, communications and every affected machine function against the approved test plan.
      • How is a replacement TWDLMDA20DRT accepted after installation?
        Record input and output tests, fault indications, program version and restored machine sequence results.
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