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      ABB RDCU-12C 3AUA0000036521
      ABB RDCU-12C 3AUA0000036521
      ABB RDCU-12C 3AUA0000036521
      ABB RDCU-12C 3AUA0000036521
      ABB RDCU-12C 3AUA0000036521
      ABB RDCU-12C 3AUA0000036521
      · Product image is representative; revision or series may vary. Contact us to request a specific version.
      Ships by Monday, November 16

      RDCU-12C 3AUA0000036521

      RMIO-12C Drive Control Unit

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          PRODUCT DESCRIPTION

          RDCU-12C 3AUA0000036521 RMIO-12C Drive Control Unit

          ABB RDCU-12C 3AUA0000036521 is a drive control unit built around the RMIO-12C board. It brings analog inputs, digital inputs and relay outputs together with optical communication and option-module connections, providing the control interface between an ACS800 converter and its external signals.

          The unit uses a 24 V DC supply and separates its power input from the auxiliary output terminals. Program identity, option loading and signal configuration remain important selection details. Detachable terminals, a control-panel connection and dedicated expansion positions support access during maintenance and replacement.
          BEFORE YOU BUY

          Confirm the complete RMIO-12C Drive Control Unit

          Send a label photo for review >>
          ACTUAL APPLICATIONS

          Relevant contexts for RDCU-12C 3AUA0000036521

          These headings describe broad ABB drive portfolio contexts. They are not a certification of this particular unit for every site; converter hardware, program identity and approved installation conditions remain decisive.
          • 01 · POWER GENERATION

            Conventional and Renewable Power Generation

            Thermal generation and regional energy supplyRenewable generation across public power networks
          • 02 · METALS & METALLURGY

            Metals and Metallurgy Across Primary Production

            Primary metals and broader metallurgical activitiesMetal production and wider commercial supply
          • 03 · PULP & PAPER

            Pulp and Paper Across Production and Supply

            Pulp and paper across industrial productionPaper supply across wider commercial markets

          Technical specifications for RDCU-12C 3AUA0000036521

          • Product Model
            RDCU-12C 3AUA0000036521
          • Spare Model
            3AUA0000036521
          • Product Parameters
            RMIO-12C Drive Control Unit
          • In stock
            10 units
          • Manufacturer
            ABB
          • Control board
            RMIO-12C
          • External supply input
            X34: 24 V DC +/-10%
          • Supply current
            250 mA typical, no options; 1200 mA maximum with options
          • Analog input channels
            3 differential: 1 voltage and 2 current
          • Analog voltage input
            -10/0/2 to +10 V; input resistance 200 kohm
          • Analog current inputs
            0/4-20 mA; input resistance 100 ohm
          • Analog outputs
            2 channels; 0/4-20 mA; load up to 700 ohm
          • Digital inputs
            6 programmable inputs plus DIIL; 24 V DC -15%/+20%
          • Digital input thresholds
            Low below 8 V; high above 12 V
          • Digital input hardware filter
            1 ms
          • Relay outputs
            3; maximum continuous current 2 A rms
          • Auxiliary output
            24 V DC +/-10%; 250 mA maximum without options
          • PPCS optical link
            10 MBd components; V57 transmit / V68 receive
          • Option connections
            Slot 1: fieldbus/I/O/encoder; slot 2: I/O/encoder; DDCS position
          • Ambient temperature
            Operating: 0 to +60 C; storage: -40 to +70 C
          View all additional
          Ask for Quote
          SYSTEM & REPLACEMENT CHECK

          Information needed before ordering

          Three direct checks to secure your system integration and minimize ordering risks.

          Information

          System integration Replacement check Manuals & support
          SYSTEM INTEGRATION

          Connect RDCU-12C to its ACS800 configuration

          RDCU-12C contains the RMIO-12C control board. Its analog and digital terminals belong to the drive control interface; their programmed functions depend on the loaded control program. Match the SW TYPE, SW CODE and DEVICE TYPE markings before using a terminal assignment from another ACS800 arrangement.
          X34 is the 24 V DC power input. The hardware manual gives 250 mA typical consumption without options and up to 1200 mA with option modules. Power supplied from the inverter or IGBT-supply power board has a separate 1 A limit, so the fitted options and actual supply path must be reviewed together. The auxiliary 24 V output is not an interchangeable supply input.
          The optical PPCS connection links the control unit to the power-stage interface; X39 serves the CDP 312R control panel. Slot 1 accepts the supported fieldbus, I/O or encoder options, while slot 2 is limited to supported I/O or encoder options. The separate DDCS position requires its appropriate module. Grounding, shielding and the J1 arrangement must follow the applicable ABB installation instructions.

          Features:

          • RMIO-12C identity and program-dependent signal mapping
          • Separate X34 supply and auxiliary-output functions
          • PPCS, panel and option interfaces kept distinct
          Isolate the complete drive and follow ABB discharge, grounding and electrostatic precautions before service. Do not treat the optical PPCS connection as Ethernet.
          INTERCHANGEABILITY

          Verify RDCU-12C 3AUA0000036521 before replacement

          Check both RDCU-12C and article 3AUA0000036521 on the supplied unit. Similar housings or an RDCU-02C designation do not establish equivalent hardware or software. Compare the program label, firmware information, converter identity and fitted options with a recoverable record of the controller configuration.
          Retain the approved terminal assignments, analog-signal scaling and digital-input logic. Relay contact switching capability must not be confused with continuous current: the hardware data specifies 2 A rms maximum continuous load. Review the power budget again if any option is added or changed, rather than assuming the previous source has spare capacity.
          Identify the optical links, detachable terminal plugs, grounding screws and jumper arrangement before removal. Follow the manufacturer procedure for isolation and handling; the housing fasteners form part of the grounding arrangement. After restoration, qualified personnel should verify program identity, I/O response, communications and fault status before the drive returns to service.

          Features:

          • Complete hardware and software identity comparison
          • Relay and supply limits reviewed independently
          • Grounding and controlled restoration checks retained
          A matching RDCU housing is not proof of a compatible loaded program. Secure the settings and confirm the converter-specific software before exchange.
          ABB RDCU-12C 3AUA0000036521 RMIO-12C Drive Control Unit Manuals, Datasheets, Drivers, Link 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.

          Features:

          • Exact-model data for RDCU-12C 3AUA0000036521
          • ABB RDCU hardware manual and safety instructions
          • ACS 800 and ABB product directories
          Documentation for RDCU-12C 3AUA0000036521 must match the complete installed product identity, the documented ACS800 RDCU-12C configuration and the supplied drive control unit before service.

          Also searched as

          RDCU-12C 3AUA0000036521 ACS800-31-0030-5 ACS800-U7-0145-7 NBRA-669C NPCU-01

          Important notice

          Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
          This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
          BUYER INFORMATION

          Commercial terms without hidden steps

          Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
          • 01

            Shipping & delivery

            Dispatch
            Eligible stock: same / next day
            Carriers
            DHL, FedEx or UPS
            Ship from
            Xiamen, China
            Reference size
            28.4 × 12.8 × 4.5 cm
            Reference weight
            0.68 kg
          • 02

            Payment & customs

            Payment
            Bank transfer (T/T)
            Currencies
            USD · EUR · GBP · RMB
            Credit cards
            Not accepted
            HS reference
            8538900000
            Origin
            Sweden
          • 03

            Warranty & returns

            Warranty
            12 months from AMIKON
            Inspection
            Label, condition and packing checks
            Returns
            Prior RMA authorisation required
            Compatibility
            Confirm before order
            OEM warranty
            Does not apply
          Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.

          • Part checked

            Full suffix recorded

          • Condition checked

            Label and appearance

          • Packing checked

            Antistatic protection

          • Tracking supplied

            Established couriers

          • Sandy Lin

            Dedicated account manager · 15+ years
          FREQUENTLY ASKED QUESTIONS

          Questions buyers ask about RDCU-12C 3AUA0000036521

          Direct answers about identity, compatibility, stock, warranty, payment and shipping.

          • Can an RDCU-02C replace RDCU-12C solely because the connectors look alike?

            No. RDCU-12C uses RMIO-12C, and the converter also depends on the loaded program. Compare the complete article, board designation, SW TYPE, SW CODE and DEVICE TYPE; physical resemblance alone does not establish interchangeability.

          • How should 1200 mA consumption be reconciled with the 1 A power-board limit?

            They describe different limits. The control unit can require up to 1200 mA with options, while the inverter or IGBT-supply power-board feed is limited to 1 A. Check the actual option load and approved supply arrangement; an external 24 V DC supply may be required.

          • Are the relay contacts rated for 8 A continuously?

            No. The hardware table distinguishes switching capacity from continuous loading. The maximum continuous relay-contact current is 2 A rms. Use the applicable voltage and load-category limits as well, rather than selecting a contact by the switching-current figure alone.

          • Which expansion position accepts a fieldbus adapter?

            The supported fieldbus adapter belongs in option slot 1. Slot 2 is specified for supported I/O extension or encoder interfaces, and the DDCS interface has its own position. Confirm the particular option module and firmware compatibility separately.

          • Does the 10 MBd PPCS specification mean a 10 Mbit Ethernet connection?

            No. PPCS is the dedicated optical link to the drive power-stage interface. The hardware manual specifies 10 MBd optical components; this does not make the ports Ethernet or permit a conventional network connection.

          • Can the auxiliary 24 V terminals be used instead of X34?

            No. X34 is the designated power input. The auxiliary output supplies limited external current and has a different function. Keep its load within the specified limit and follow the connection diagram for the installed arrangement.

          • Why must the grounding screws and J1 position be checked during exchange?

            The mounting screws provide the unit grounding, while J1 affects the grounding arrangement shown in the isolation diagram. Preserve the approved arrangement and follow the hardware manual; neither should be treated as an incidental mechanical detail.

          • Will a replacement include the control panel, option modules and drive program?

            Do not assume those items from the RDCU-12C name alone. Confirm the quoted hardware contents and inspect the software label. A replacement unit must have the appropriate program for the converter, and any retained options require their own compatibility review.
          READY TO VERIFY YOUR PART?

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