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6RY1803-0CA03

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Siemens 6RY1803-0CA03 is the C98043-A7115-L11 field supply board that generates, senses and synchronizes the SINAMICS DCM field circuit.
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Technical specifications for 6RY1803-0CA03

  • Manufacturer:
    Siemens
  • Part Number:
    6RY1803-0CA03
  • Product Family:
    Siemens SIMOREG DC-MASTER
  • Product Type:
    SINAMICS DCM Field Supply Board
  • Stock:
    1
  • Internal Board:
    C98043-A7115-L11
  • Converter Arrangement:
    2Q/4Q
  • Field Infeed:
    3U1/3W1
  • Field Output:
    3C/3D
  • Firing Pulse Isolation:
    Pulse transformers
  • Current Feedback:
    Shunt-resistor sensing
  • Line-Voltage Sensing:
    Isolated field-supply infeed
  • Synchronization Source:
    Field-supply line voltage
  • Phase Relationship:
    Independent of armature and electronics infeed
  • RoHS Compliance:
    Since 21 August 2013
  • Actual Value Signal:
    Field current
  • Weight:
    0.34 lbs (0.153 kg)
  • Tariff Code:
    85049090
  • Country of origin:
    Romania
  • 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 Supply Route Pulse Isolation Current Feedback Phase Sync

Features:

  • Maps the order number to internal field module C98043-A7115-L11.
  • Connects the field infeed, isolated firing path and measured field output.
  • Derives the gating reference directly from the field-supply voltage.
6RY1803-0CA03 combines command isolation and feedback acquisition on one field-supply board.

Its terminal arrangement separates the incoming line at 3U1/3W1 from the controlled field circuit at 3C/3D.

Direct field-side synchronization allows the armature and electronics infeeds to use a different phase relationship.

The Siemens 6RY1803-0CA03 SINAMICS DCM Field Supply Board may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6RY1803-0CA03 SINAMICS DCM Field Supply Board Manuals,Datasheets,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.

Field-current path

  • Line entry: 3U1 and 3W1 bring the field-supply infeed onto the module.
  • Controlled section: The field thyristors regulate the current between the infeed and output.
  • Load connection: 3C and 3D carry the controlled output to the external field circuit.
  • Board boundary: The C98043-A7115-L11 module contains this complete infeed-to-output relationship.

Gate-command transfer

  • Command source: The control system generates the required field firing sequence.
  • Isolation stage: Pulse transformers separate the control path from the field power circuit.
  • Thyristor drive: The isolated pulses reach the field-supply semiconductor gates.
  • Arrangement scope: The module variant supports the documented two- or four-quadrant converter structure.

Actual field-current acquisition

  • Sensing element: Shunt resistors convert field current into a measurable value.
  • Signal role: The resulting actual value returns to the field-control functions.
  • Measurement location: Sensing is integrated with the field-supply module rather than an armature-current channel.
  • Diagnostic distinction: The feedback path is checked separately from the firing-pulse path.

Field-side synchronization

  • Voltage source: The module measures line voltage at the field-supply infeed.
  • Isolation: The measured field voltage is transferred through an isolated sensing path.
  • Gating reference: That measurement supplies synchronization for the field gating unit.
  • Phase freedom: The field reference is independent of the armature-power and electronics infeeds.
Description
Siemens 6RY1803-0CA03 is the SINAMICS DCM field supply board identified internally as C98043-A7115-L11. It forms the field-circuit interface between the incoming supply, the thyristor firing path and the external field connection.

At terminals 3U1 and 3W1, 6RY1803-0CA03 receives the field-supply infeed and passes the controlled field output to 3C and 3D. Shunt resistors on the board provide the actual field-current value used by the control system.

Electrical isolation in 6RY1803-0CA03 is provided by pulse transformers that carry the firing commands to the field thyristors. The same module measures the field-supply line voltage through an isolated path and derives synchronization for the field gating unit.

Because voltage sensing occurs directly at the field infeed, 6RY1803-0CA03 does not require its phase angle to follow the armature-power or electronics infeed. This keeps the field-gating reference tied to the field supply itself.
Alternative Names
6RY18030CA03 6RY1803 0CA03 Siemens 6RY1803-0CA03 Siemens 6RY1803 0CA03 SINAMICS DCM 6RY1803-0CA03 6RY1803-0CA03 Field Supply 6RYI803-0CA03 6RY1803-OCA03
Technical notes
The Siemens 6RY1803-0CA03 field module links the 3U1/3W1 infeed to 3C/3D while isolating field firing pulses and current feedback.
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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.
Which internal board number must agree with Siemens 6RY1803-0CA03?
The exact Siemens 6RY1803-0CA03 record maps to C98043-A7115-L11; another C98043 board number should not be substituted during identification.
How are the input and output sides separated on 6RY1803-0CA03?
Siemens 6RY1803-0CA03 uses 3U1/3W1 for the field-supply infeed and 3C/3D for the controlled field output.
Why do the field firing pulses on Siemens 6RY1803-0CA03 pass through transformers?
Pulse transformers give Siemens 6RY1803-0CA03 electrical isolation between the control command and the field thyristor gate circuit.
What produces the actual-current signal in 6RY1803-0CA03?
Shunt resistors integrated with Siemens 6RY1803-0CA03 sense the field current and provide its actual value to the control functions.
Does Siemens 6RY1803-0CA03 require the field supply to share the armature phase angle?
No. Siemens 6RY1803-0CA03 derives gating synchronization directly from the isolated field-infeed voltage, so that phase relationship is independent.