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DCF804-0050

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ABB DCF804-0050 is a DCS880 field exciter using fully controlled antiparallel thyristor bridges for four-quadrant excitation and field reversal.
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Technical specifications for DCF804-0050

  • Manufacturer:
    ABB
  • Part Number:
    DCF804-0050
  • Product Family:
    ABB Drives
  • Product Type:
    DCS880 Four-Quadrant Field Exciter
  • Stock:
    1
  • System family:
    DCS880
  • Module role:
    Field exciter
  • Bridge topology:
    Fully controlled antiparallel thyristor bridges
  • Quadrant capability:
    Four quadrant
  • Field direction:
    Reversal supported
  • Magnetic components:
    Built-in line chokes
  • Documented mass:
    Approximately 11 kg
  • Weight:
    11 kg
  • Estimated shipping dimensions:
    34.7x37x12.5cm
  • Tariff Code:
    Please confirm the destination before shipping
  • 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 Field Control Power Circuit Commissioning Product Applications

Features:

  • Four-quadrant excitation: antiparallel controlled bridges support field-current reversal
  • Dynamic field control: the design supports rapid excitation and de-excitation
  • Integrated magnetics: ABB documents built-in line chokes for the exciter assembly
ABB DCF804-0050 is a DCS880 field-power assembly for DC-drive applications that require controlled field magnitude and direction.

Its thyristor bridge topology connects the drive control strategy to motor field current, protective hardware, and energy-discharge design.

Selection must align supply and motor field data, connections, polarity, protection, cooling, parameters, control wiring, and commissioning procedure.

Apter Power supports document review, quotation, and procurement for the ABB DCF804-0050 DCS880 Four-Quadrant Field Exciter.
ABB DCF804-0050 DCS880 Four-Quadrant Field Exciter Manuals,Datasheets,Link
Important Notice: No qualified exact-model English PDF is attached. Use the complete product model in every document request.
  • Controlled bridges: thyristor firing governs field-current magnitude.
  • Antiparallel paths: the topology supports reversal of field-current direction.
  • Four quadrants: excitation and de-excitation behaviour extends across both current directions.
  • Control coordination: parameters and drive commands must match the motor field design.
  • Supply evidence: voltage, transformer, and connection method require confirmation.
  • Built-in chokes: the documented magnetics belong to the exact assembly.
  • Protection chain: fuses, contactors, discharge, and insulation remain external design boundaries.
  • Polarity control: incorrect field orientation can reverse intended motor behaviour.
  • Before energization: inspect wiring, torque, insulation, cooling, and protective devices.
  • Current limits: verify magnitude and direction against motor and drive records.
  • Dynamic test: prove excitation, de-excitation, and reversal under controlled conditions.
  • Trip proof: confirm protective responses and stable motor operation before release.
  • DCS880 DC-drive systems: regulate the field circuit of an approved motor installation.
  • Field reversal duty: support controlled changes in excitation direction.
  • Fast de-excitation: manage dynamic field reduction within the engineered drive sequence.
  • Planned field-converter service: replace the exact assembly while retaining commissioning evidence.
Description
Fast field build-up, decay, and reversal are the main reasons to select DCF804-0050 within an approved DCS880 DC-drive design. ABB documents fully controlled antiparallel thyristor bridges and integrated line chokes, allowing the exciter to manage four-quadrant field current without treating the field circuit as a simple fixed rectifier.

The installed motor and supply define the real boundary for DCF804-0050. Field voltage and current, transformer or mains connection, contactors, fuses, discharge path, insulation, cooling, control links, polarity, and commissioning parameters must all agree with ABB hardware documentation before energy is applied.

Current ABB DCS880 hardware documentation supports the active OEM path for DCF804-0050, but availability does not remove commissioning risk. A planned exchange should retain parameter and waveform evidence, verify field-current direction and limits, prove de-excitation and reversal under controlled conditions, and document the motor response before production release.
Alternative Names
ABB DCF804 0050 ABB DCF 804-0050 ABB DCF8040050 DCS880 DCF804-0050 DCF804 field exciter ABB four quadrant field exciter DCF804-0050 thyristor bridge DCS880 field reversal module ABB DCF804 field converter
Technical notes
For DCF804-0050 service, preserve the DCS880 drive identity, field supply and motor data, bridge and choke connections, contactors, fuses, discharge path, polarity, insulation, cooling, parameters, and control wiring. Isolate all energy, verify field-current direction and limits, and prove excitation, de-excitation, reversal, and protective trips under controlled conditions before production release.
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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.
What function does DCF804-0050 perform in a DCS880 system?
It is a four-quadrant field exciter using fully controlled antiparallel thyristor bridges to regulate and reverse the approved DC motor field current.
Does DCF804-0050 include line chokes?
Yes. ABB hardware documentation identifies built-in line chokes, but upstream supply, protection, contactors, discharge, and installation wiring still require project review.
What should stop energization of DCF804-0050?
Stop if supply or motor field data, wiring, polarity, insulation, fuses, contactors, discharge path, cooling, parameters, or control links conflict with the approved design.
How should field reversal be tested on DCF804-0050?
Use the ABB commissioning procedure and controlled motor conditions, monitor field magnitude and direction, prove transitions and protective trips, and document the resulting motor response.
Can DCF804-0050 be accepted from model and dimensions alone?
No. The complete label, bridge and connector arrangement, field rating, control context, condition, documentation, and test evidence must agree before installation.
What information belongs in a request for DCF804-0050?
Provide the exact model, DCS880 drive identity, field supply and motor data, photos, required condition, quantity, destination, current diagnostics, and outage date.

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