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.