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The GE DS2020FECNRX010A Field Exciter Module is a specific printed circuit board (PCB) designed by General Electric (GE) for use in their industrial drive control systems.1
It is a critical component for regulating the field current of a motor or generator, ensuring stable and precise control over the machine’s speed, torque, or output voltage.2
⚙️ Key Specifications and Function
| Feature | Specification/Description |
| Product Type | Field Exciter Module / Field Supply Amplifier Board |
| Series/Family | GE Mark V and DC2000 Digital Adjustable Drive Systems |
| Primary Function | Provides regulated excitation current to the field windings of a motor or generator. It acts as a voltage regulator for the excited machine. |
| Shunt Rating (Key Identifier) | 10 Amps (10A). This indicates the current monitoring capacity of the board’s internal shunt. |
| Maximum Output Current | 24 Amps (Max) to the motor field. |
| Plugging Type | Non-Plugging (NRX), meaning it is designed for applications that do not require regenerative or ‘plugging’ braking. |
| Power Input | Typically requires a +5 V DC power supply (for logic circuits) and a 28 V DC supply for primary power/relay functions. |
| Compatibility | Used with C, M, and G frame DC2000 drives. |
| Documentation | Referenced in GE manuals such as GEH-6330. |
Part Number Breakdown
The unique code provides insight into the board’s design:
- DS2020: Indicates the design family (Mark V / DC2000 series).3
- FECN: Stands for Field Exciter Control Non-Reversing.
- RX: Designates the type of PCB coating/protection.4
- 010A: Specifies the 10 Amp shunt rating and the revision level (A).
The 10A shunt rating is the main factor differentiating the DS2020FECNRX010A from similar modules like the DS2020FECNRX001A (1A shunt) or DS2020FECNRX005A (5A shunt). When replacing this board, the shunt rating must correctly match the requirements of the connected field winding.
