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        • Lifecycle status

          Active / Available from OEM

          Apter Power can provide Honeywell MLI-DN32U for verified MasterLogic 50 control requirements, with current quotation, sourcing support and delivery planning for the requested quantity.

        MLI-DN32U

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        1001 reviews ｜ Need a Specific Revision?
        Honeywell MLI-DN32U is a MasterLogic 50 plc base module with 16 digital inputs, 16 sink open-collector outputs and 100-240 V AC power.
        In Stock
        Ships by Friday, October 30
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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.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        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
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for MLI-DN32U

        • Manufacturer:
          Honeywell
        • Part Number:
          MLI-DN32U
        • Product Family:
          Honeywell MasterLogic-50
        • Product Type:
          PLC base module
        • Stock:
          1
        • Power supply:
          100-240 V AC
        • Digital inputs:
          16 channels, 24 V DC
        • Digital outputs:
          16 channels
        • Output stage:
          Open-collector transistor, sink
        • Analog I/O:
          None
        • Ethernet interface:
          1 built-in FEnet port
        • Serial networking:
          2 built-in Snet channels
        • Base-unit class:
          IEC U high-performance base unit
        • Tariff Code:
          8537101190
        • Country of origin:
          USA
        • 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 I/O Data Communications Programming Installation Check

        Product overview:

        • Integrated processor with 100-240 V AC power input
        • 16 digital inputs and 16 sink open-collector outputs
        • IEC U high-performance base unit for IEC 61131-3 control

        MLI-DN32U combines controller processing, local digital I/O and its power stage in one compact Honeywell MasterLogic 50 assembly.

        The sink output arrangement must be matched to field polarity, load behavior and protective devices before wiring.

        Communication planning covers 1 built-in FEnet port together with 2 built-in Snet channels.

        Apter Power can provide Honeywell MLI-DN32U for verified replacement and new-project requirements.

        Verified resources for Honeywell MLI-DN32U:

        I/O data:

        • Digital inputs: 16 channels at 24 V DC
        • Digital outputs: 16 channels
        • Output circuit: Open-collector transistor, sink

        The onboard allocation of MLI-DN32U should be checked against the application point list and physical terminal map.

        Expansion channels are engineered separately from the base-unit count and must agree with the saved project.

        Communications:

        • Ethernet resource: 1 built-in FEnet port
        • Serial resource: 2 built-in Snet channels
        • Retain verified addresses, protocols and cable assignments

        Communication interfaces on MLI-DN32U support engineering and system data exchange appropriate to the configured MasterLogic network.

        Test every required peer, supervisory and programming connection after hardware replacement.

        Programming:

        • IEC 61131-3 control project
        • Preserve the validated program and parameter backup
        • Match hardware, firmware and I/O assignments

        Load only the approved MLI-DN32U application after confirming the target hardware configuration.

        Review diagnostics and perform controlled functional tests before enabling automatic operation.

        Installation check:

        • Isolate power and identify every conductor
        • Verify supply, grounding, commons and terminal torque
        • Prove all I/O, communication and safety responses

        After fitting MLI-DN32U, compare actual field voltage and load behavior with the documented design.

        Record the installed revision, project backup, measured supply and commissioning results.

        Description

        MLI-DN32U is a Honeywell MasterLogic 50 plc base module with an integrated processor, 100-240 V AC power input, 16 24 V DC digital inputs and 16 sink open-collector outputs. The compact assembly combines controller execution, power conversion and local I/O for machine, utility and sequence-control applications.

        The MLI-DN32U provides 32 onboard digital points before compatible expansion I/O is counted. The 16 sink transistor outputs require the documented DC polarity, common reference and load return. External field power and overcurrent protection must be engineered for the selected actuators. Communication resources include 1 built-in FEnet port and 2 built-in Snet channels, so addressing and network parameters should be retained during replacement.

        Before installing the MLI-DN32U, verify the complete nameplate, power class, terminal allocation, I/O commons, output wiring, connected expansion hardware, firmware level and approved application backup. Commissioning should include insulation and grounding checks, point-by-point I/O tests, controller diagnostics, communication tests and a controlled proof of the final machine sequence.

        Alternative Names
        MLI-DN32U MLI DN32U MLIDN32U Honeywell MLI-DN32U Honeywell MLI DN32U Honeywell MasterLogic 50 MLI-DN32U MLI-DN32U PLC base module Honeywell MLI-DN32U CPU I/O module
        Technical notes
        MLI-DN32U combines a 100-240 V AC supply, 16 digital inputs and 16 sink open-collector outputs in one Honeywell MasterLogic 50 base unit. Match the exact supply, output circuit, communication resources, expansion hardware and retained control project before commissioning.
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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
        What power source is required for MLI-DN32U?
        Use 100-240 V AC as marked for this base unit, with the documented protective device, grounding and available current verified before energization.
        How are the 16 digital inputs on MLI-DN32U checked?
        Confirm 24 V DC field polarity and the input common, then measure OFF and ON voltage at the terminal under the actual cable and contact conditions.
        What does the sink output arrangement on MLI-DN32U require?
        The sink open-collector channels require the correct DC polarity, common reference, load return and external field supply; they must not be wired as dry relay contacts.
        Which communication checks apply to MLI-DN32U?
        Document the existing addressing and cabling for 1 built-in FEnet port and 2 built-in Snet channels; restore only verified parameters and prove peer, supervisory and engineering access after replacement.
        How is expansion I/O selected for MLI-DN32U?
        Match the MasterLogic 50 expansion interface, available current, supported module count, terminal allocation and project configuration rather than relying only on the base-unit point total.
        Can another MasterLogic 50 base unit directly replace MLI-DN32U?
        Only after matching 100-240 V AC, the 16/16 I/O allocation, open-collector transistor behavior, terminal layout, communications, firmware and application memory.
        What tests are required after installing MLI-DN32U?
        Inspect terminal torque, insulation, grounding and field power, test every input and output under controlled conditions, review diagnostics and prove the safe sequence before return to service.
        What information is needed to quote MLI-DN32U?
        Provide the exact nameplate, hardware and firmware revision, supply, connected I/O and communication details, expansion modules, quantity, destination and requested delivery date.

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