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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Value |
| Manufacturer | General Electric (GE) |
| Part Number | DS3800HXRA1F1F |
| System Compatibility | Speedtronic Mark IV Control Systems |
| Input Voltage | 24 VDC (Nominal) |
| Operating Temperature | 0 to 60°C (32 to 140°F) |
| Mounting Style | Card Cage / Rack Mount |
| Number of Channels | Multiple Logic Inputs/Outputs |
| Connector Type | Edge Connectors and Header Pins |
| Firmware Requirement | Compatible with standard Mark IV logic |
| Dimensions | 8.5 x 4.5 inches (Approx.) |
Product Introduction & Supply Chain Strategy
The GE DS3800HXRA1F1F is a core interface board within the Speedtronic Mark IV turbine control system, responsible for processing critical logic signals between the central processor and field devices. It ensures precise timing and signal integrity for heavy-duty gas and steam turbine operations.
Securing this module as New Surplus is a vital risk-mitigation strategy. Since the Mark IV series is now legacy hardware, relying on refurbished boards introduces significant Total Cost of Ownership (TCO) risks, including capacitor aging and trace degradation. Purchasing New Surplus inventory guarantees original OEM reliability and extends the operational life of your control system without the prohibitive costs of a full-scale DCS migration.
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
Ensure the turbine is in a safe state and perform a full lock-out/tag-out on the control cabinet power. Put on a grounded ESD wrist strap to prevent static discharge. Before removal, take clear photos of the existing module, specifically noting the positions of any jumpers or DIP switches to ensure the new board is configured identically.
Stage 2: Removal
Loosen the retaining screws on the card cage. Firmly grasp the edges of the board and pull straight out of the backplane. Avoid any rocking motions that could bend or snap the delicate backplane pins. Place the old board into an anti-static bag immediately.
Stage 3: Installation (Clone & Seat)
Mirror the jumper and DIP switch settings from the old board onto the new DS3800HXRA1F1F. Align the board with the card cage guides and slide it in until the edge connector is firmly seated against the backplane. Secure the retaining screws.
Stage 4: Power-On & Testing
Restore power to the cabinet and monitor the 24 VDC supply for any dips. Observe the diagnostic LEDs on the board faceplate; a green “RUN” or status LED should indicate successful initialization. Verify that the Mark IV control logic recognizes the board and that no I/O faults are present in the operator interface.
- DS3800HXRA1F1F
- DS3800HXRA1F1F
Firmware/Software Versions & Upgrade Notes
- Recommended Version: This board typically ships with factory-default logic settings compatible with most Mark IV revisions.
- Compatibility: Ensure the revision suffix (1F1F) matches your existing system requirements. While some GE boards are backward compatible, jumping between major hardware revisions without checking the PROM chips can cause communication handshake failures.
- Warning: Do not attempt to swap PROM chips from a failed board to the new board unless you have verified that the chip pins are free from corrosion and the firmware version is supported by the new hardware revision.
Frequently Asked Questions (FAQ)
Is this board actually new? It’s an older series.
Yes. This is New Surplus inventory. It has never been installed in a machine or used in a plant. It has been kept in climate-controlled storage and has undergone a full inspection to verify it meets original factory standards.
Why should I pay more for this than a repaired unit?
A repaired board has already endured thousands of thermal cycles. Components like electrolytic capacitors and relays have a finite lifespan. By buying New Surplus, you are avoiding the “hidden failure” trap where a 500 savings on a refurb leads to 50,000 in lost production due to a sudden failure.
Can I hot-swap the DS3800HXRA1F1F while the system is running?
No. The Mark IV backplane architecture is not designed for hot-swapping this specific module. Removing or inserting the board while the rack is energized can cause electrical arcs that damage the backplane or the processor.
Does this board come with the PROM chips installed?
Standard New Surplus modules typically include the factory firmware. However, if your turbine uses site-specific logic, you may need to transfer your existing PROMs or contact us for programming assistance.
What is the warranty on a legacy part like this?
Despite being a surplus item, we provide a 1-year functional warranty. We are confident in the “New Surplus” status and the reliability of original GE manufacturing.
