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        DLM02

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        ABB DLM02 is a Freelance rack link module that supervises two independent 24 V DC feeds and transfers automatically between them.
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        Ships by Thursday, October 29
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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 DLM02

        • Manufacturer:
          ABB
        • Part Number:
          DLM02
        • Product Family:
          ABB H&B Freelance 2000
        • Product Type:
          redundant-power rack link module
        • Stock:
          1
        • Rack role:
          Link module with redundant power-supply supervision
        • Network:
          DigiNet P
        • Rack identification:
          Coding switch for data rate and rack ID
        • Power inputs:
          Two independent 24 V DC feeds from separate DPW sources
        • Supply tolerance:
          24 V DC ±10%
        • Rack power capacity:
          120 W maximum
        • Internal power consumption:
          7 W maximum
        • Supply transfer:
          Automatic switchover between monitored feeds
        • Monitoring:
          Microprocessor-based supply and temperature supervision
        • Alarm behavior:
          Status indication and alarm to the CPU
        • External fuse:
          5 A time-lag
        • Internal fuse:
          0.4 A time-lag
        • Buffer battery:
          Replaceable 3.6 V battery
        • External buffer input:
          3.6 V and/or 24 V
        • External 3.6 V range:
          2.9–4.5 V
        • External 24 V range:
          18–30 V
        • Protection:
          Short-circuit and overvoltage protected
        • Expansion support:
          Expansion I/O rack connection supported
        • Weight:
          1.7 kg
        • Tariff Code:
          8538900000
        • Country of origin:
          Sweden
        • 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 Dual Supply Supervisory Logic Rack Continuity Application
        • Rack link module for dual-feed Freelance stations
        • Automatic transfer maintains supply after one input is lost
        • Supervisory logic reports power and temperature conditions

        DLM02 combines the DigiNet P rack interface with redundant supply supervision for higher-availability station designs.

        The module evaluates both incoming feeds and transfers the rack to the remaining source while reporting the failure to local indication and controller diagnostics.

        Prove that the feeds are independent, correctly protected and each capable of carrying the rack before accepting the redundant arrangement.

        Availability, condition, price, and shipping time for DLM02 are confirmed during quotation.

        ABB DLM02 redundant-power rack link module Manuals, Product Family, Links

        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.

        • Two independently protected feeds form the basis of rack-power redundancy.
        • Each source must be capable of carrying the complete installed rack load.
        • Commissioning removes one feed at a time to prove continued operation.
        • The module monitors supply availability and internal thermal condition.
        • A detected problem is presented locally and forwarded through the controller alarm path.
        • Troubleshooting separates source, wiring, protection, load and module conditions.
        • DigiNet P identity and communication remain tied to the documented coding-switch setting.
        • Memory buffering protects controller data during a controlled supply interruption.
        • Expansion and rack wiring must remain consistent through a module exchange.
        • Redundant 24 V DC supply for classic Freelance racks
        • DigiNet P connection in higher-availability process stations
        • Automatic rack-power transfer with controller alarm reporting
        Description
        DLM02 combines the Freelance rack communication link with redundant power-feed monitoring for stations that require continued rack supply after one source is lost.

        Its supervisory processor checks the two feeds and module temperature, initiates automatic switchover, reports supply problems and retains the battery or external RAM-buffer connection.

        Installation requires independently protected power circuits, the documented coding-switch identity, DigiNet P cabling, buffer source and confirmation that both supplies can support the rack load.
        Alternative Names
        DLM02 DLM 02 ABB DLM02 ABB DLM 02 0338434 P37421-4-0338434
        Technical notes
        DLM02 requires two independent protected 24 V DC feeds, correct DigiNet P coding, rack-load capacity, buffer wiring and alarm verification; a common-source connection defeats the redundant-power design.
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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 architecture is required for ABB DLM02 redundancy?
        Use two independently protected 24 V DC feeds from the documented supply arrangement; wiring both inputs to one source does not provide meaningful redundancy.
        How does ABB DLM02 respond when one rack supply fails?
        It monitors both inputs, transfers to the usable source automatically and reports the abnormal condition through module indication and the controller alarm path.
        Why must both ABB DLM02 supply paths be load-tested?
        A standby feed can appear healthy without carrying the rack. Verify that each circuit, protection device and power supply can independently support the installed load.
        What temperature-related check applies to ABB DLM02?
        The module includes temperature supervision. Investigate cabinet cooling, airflow, rack loading and ambient conditions when a temperature alarm is reported.
        Which settings must be preserved when replacing ABB DLM02?
        Copy the DigiNet P coding-switch position and retain rack identity, network cabling, power-input assignment, CPU alarm handling and buffer connections.
        Can ABB DLM02 be installed where only ABB DLM01 wiring exists?
        Not without engineering review. The redundant module requires two protected feeds and associated alarm and power checks that a single-feed DLM01 installation may not provide.
        How should ABB DLM02 switchover be commissioned?
        With the process protected, interrupt each feed separately, confirm uninterrupted rack operation, verify status and CPU alarms, then restore both independent supplies.

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