The Siemens C98043-A7014-L2 is a field excitation board designed for the SIMOREG DC drive family — a compact, high-power printed circuit board that supplies and regulates current to the field winding of a separately-excited DC motor .
As part of the broader C98043 series of converter components, this board handles the controlled DC voltage supply to the motor's field winding. In a separately-excited DC motor, the field winding creates the magnetic flux required for torque production. If this board fails, the motor cannot be magnetized, and the drive will report a field loss fault before any armature operation is attempted.
Item No :
C98043-A7014-L2Order(MOQ) :
1Payment :
EXW/CIFProduct Origin :
RomaniaShipping Port :
Wuhan, Hubei, ChinaLead Time :
3-5 daysWeight :
0.239kgSpecifications
Siemens C98043-A7014-L2 SIMOREG Field Excitation Board
High-Performance Field Supply Module for Siemens SIMOREG DC Drives
SIMOREG DC Drive Field Supply: Provides regulated DC power to the field winding of separately-excited DC motors in SIMOREG converter systems
Integrated Field-Weakening Control: Performs both full-field retention at and below base speed, and controlled field reduction above base speed — critical for achieving higher rotational speeds
High-Power Capability: Designed for SIMOREG converter configurations with substantial armature currents, making it suitable for heavy-duty industrial applications
German Engineering & Construction: Manufactured by Siemens AG in Germany, adhering to stringent European quality and industrial standards
CE & RoHS Certified: Meets international safety and environmental compliance standards
Compact PCB Design: Single-board solution that simplifies field supply management within the drive cabinet
| Category | Specification |
|---|---|
| Manufacturer | Siemens AG |
| Model Number | C98043-A7014-L2 |
| Product Type | Field Excitation / Field Supply Board |
| Product Family | SIMOREG DC Drive Series |
| Function | Controlled DC supply to motor field winding; field current regulation + field weakening |
| Product Status | Discontinued by manufacturer (spare/replacement part) |
| Country of Origin | Germany |
| Certifications | CE, RoHS |
| Compatibility | SIMOREG DC converter configurations |
A separately-excited DC motor has two electrically independent windings: the armature winding (rotating part) and the field winding (stationary frame). The field winding is relatively low-current but highly inductive — it takes several seconds for field current to build to full strength after power is applied .
The C98043-A7014-L2 manages the field current through two distinct operating modes:
| Mode | Description | Benefit |
|---|---|---|
| Full-Field Control | Maintains nominal field current at and below base speed | Enables full rated torque output |
| Field-Weakening Control | Gradually reduces field current above base speed | Allows motor to reach higher rotational speeds (at reduced torque) |
The C98043-A7014-L2 is deployed in industrial sectors requiring reliable DC motor field control:
| Industry | Application |
|---|---|
| Metals & Steel | Rolling mill main drives — field control for reversing and non-reversing mills |
| Mining | Mine hoists and conveyor drives — requires precise field weakening for speed ranges |
| Marine | Ship propulsion and thruster DC drives |
| Cement & Mining | Large kiln and crusher drive systems |
| General Industrial | Heavy-duty DC motor controls in demanding environments |
Spare Part Status: This product has been discontinued by Siemens and should be considered a spare/replacement part for maintaining existing SIMOREG DC drive installations .
Configuration Not Included: The C98043-A7014-L2 is a hardware component. Replacement must be performed by qualified personnel with access to the drive's original parameter backup.
Wiring Verification: Before installing a replacement board, verify terminal assignments match the original configuration to prevent short circuits.
Field Supply Timing: Due to the inductive nature of the field winding, the board requires proper pre-charging timing; consult the drive's commissioning manual for power-up sequence.
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