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3. Key Technical Specifications
| Parameter | Value |
| Manufacturer | GE (General Electric) |
| Part Number | DS200DCFBG1BLC |
| Board Acronym | DCFB |
| Compatibility | Mark V Speedtronic / DC2000 Drives |
| Functionality | SCR Gating Interface & Feedback Scaling |
| Input Feedback | Armature Voltage & Current Sensing |
| Protection | Instantaneous Overcurrent (IOC) Monitoring |
| Connectors | Multi-pin headers and terminal strip screws |
| Revision Level | G1BLC (Specific scaling and hardware rev) |
4. Product Introduction & Supply Chain Strategy
The GE DS200DCFBG1BLC is a fundamental component of the DCFB (DC Feedback) system used in GE Mark V and DC2000 drive lineups. This board serves as the critical sensory link between the high-power SCR bridge and the low-voltage control electronics, handling armature voltage feedback, current sensing, and motor field control signals. Without a functioning DCFB board, the drive cannot maintain precise speed or torque regulation.
Strategically, maintaining this specific “BLC” revision as New Surplus is a priority for facility managers. Because this board is directly involved in power scaling, using a refurbished unit with aged or drifted resistors can lead to inaccurate feedback and catastrophic motor over-speed conditions. Our New Surplus inventory ensures that the precision-matched components are at factory-spec, eliminating the stability risks associated with second-hand hardware.
5. Installation & Configuration Guide
- Stage 1: Pre-Installation (Prep & Safety): Perform a complete lockout of both the AC main supply and the 125 VDC control power. Use an ESD-safe workstation. Carefully document the position of every wire on the terminal strip; using a camera for reference is highly recommended.
- Stage 2: Removal: Loosen the terminal screws and remove the wiring harness. Disconnect all ribbon cables from the J-ports. Unscrew the board from the nylon standoffs, ensuring you do not drop any hardware into the drive chassis.
- Stage 3: Installation (Clone & Seat): Check the jumpers on the new DS200DCFBG1BLC. These jumpers define the scaling for voltage and current feedback; they MUST match the old board’s configuration exactly to prevent drive damage. Secure the board and reconnect all wiring.
- Stage 4: Power-On & Testing: Restore control power first. Verify that the “Power OK” LEDs are lit. Once the drive is energized, perform a low-speed test run while monitoring armature feedback on the HMI to ensure the scaling matches the motor’s actual performance.
6. Firmware/Software Versions & Upgrade Notes
The DS200DCFBG1BLC is a hardware-configured board, meaning its “programming” is done primarily through physical jumpers and DIP switches. However, it must be compatible with the “LCC” (LAN Control Card) firmware version in your drive. If you are replacing an older revision (e.g., G1AAA) with this G1BLC, verify the scaling resistors match. A mismatch in the “BLC” specific hardware revision can result in feedback errors that prevent the drive from clearing “Ground Fault” or “Overcurrent” alarms.
- DS200DCFBG1BLC
- DS200DCFBG1BLC
7. Frequently Asked Questions (FAQ)
What does the “BLC” suffix signify?
The “BLC” suffix indicates a specific hardware revision level and group configuration. In the GE numbering system, these letters often denote specific resistor values for voltage scaling or hardware updates. Always replace like-for-like to ensure your drive calibration remains valid.
Is this board hot-swappable?
No. Replacing the DCFB board while the system is under power will likely result in a catastrophic failure of both the board and the connected drive control cards. Always de-energize the entire cabinet.
Can I use a refurbished board for a lower price?
We advise against it for feedback modules. Refurbished DCFB boards often have “ghost” issues where aged capacitors cause intermittent signal noise. In a high-speed DC drive, noise on the feedback loop can cause erratic motor behavior. New Surplus is the only way to guarantee signal integrity.
How is the board protected during shipping?
We ship all DS200DCFBG1BLC units in professional-grade ESD shielding bags inside double-walled, heavy-duty boxes. Every unit includes a QC report verifying that the board has passed physical inspection and continuity testing.
Does this board include the mounting standoffs?
No, it is designed to mount onto the existing standoffs within your GE drive cabinet. If your current standoffs are damaged, please contact us for compatible hardware.
