| Parameter | Specification |
|---|---|
| Product Name | Sumitomo Excavator Control Panel / Controller |
| Part Number (OEM) | KHR2680 |
| Cross-Reference Part Number | KHR2679 |
| Brand | COGENG (High-Quality Aftermarket Replacement) |
| Condition | Brand New, Fully Tested |
| Compatible Machine Models | Sumitomo SH200A3, SH120-3, SH200-3, SH300-3; Case CX210, CX350 |
| Core Function | Hydraulic Pump & Engine Control Management |
| Material | Industrial-Grade Composite Housing, FR-4 PCB |
| Voltage | 24V DC (Standard Heavy Equipment System) |
| Connector Type | OEM Standard Multi-pin Rectangular Connector (Waterproof Locking) |
| Operating Temperature | -40°C to +85°C |
| Ingress Protection | Sealed against Dust and Moisture (Equivalent to IP65) |
| Quality Assurance | 100% Function Tested & Burn-in Tested Before Shipment |
| Warranty | Guaranteed Not Dead on Arrival (DOA) |
| Shipping Weight | Approx. 0.85 kg (Gross weight with protective packing) |
| Package Dimensions | 25 x 20 x 10 cm |
| Return Policy | Not Returnable or Exchangeable (Strict QC ensures functionality) |
The Sumitomo Control Panel, Part Number KHR2680 (and its interchangeable cross-reference KHR2679), is a critical electronic component engineered to serve as the operational brain for specific Sumitomo and Case hydraulic excavator models. This high-quality aftermarket controller is manufactured by COGENG to exacting standards, ensuring it matches or exceeds the performance and durability of the original OEM part. It governs the complex interaction between the machine's engine, hydraulic pumps, and operator inputs to deliver seamless, efficient, and responsive control.
This unit is not merely a circuit board; it is a sophisticated microcomputer sealed within a ruggedized housing designed to withstand the extreme shock, vibration, temperature swings, and electromagnetic interference characteristic of heavy construction and earthmoving job sites. The firmware and hardware configuration are specifically calibrated for the machine's electromechanical hydraulic system, translating the operator's joystick commands into precise adjustments of the variable displacement pumps and engine throttle. A malfunctioning control panel can lead to a catastrophic loss of productivity, manifesting as a dead machine, sluggish hydraulics, erratic movements, or total failure to start. Therefore, selecting a reliable, rigorously tested replacement like the COGENG KHR2680 is paramount for minimizing downtime and maintaining project profitability. Our product provides a direct plug-and-play replacement, eliminating the need for complex reprogramming or wiring harness modifications, thus getting your excavator back online rapidly.
Included in the Package (Single Unit Box):
Main Controller Assembly (P/N: KHR2680/KHR2679) x 1: The core electronic control unit sealed in its durable, black composite housing. This contains the main processor board, Input/Output (I/O) interface, and power regulation circuitry.
Sealed Multi-pin Connector Interface: An integrated, high-density receptacle on the unit's face ensures a positive lock with the machine's wiring harness, preventing disconnection from vibration.
Protective Foam Set: A custom-cut, anti-static foam set encasing the controller within its shipping carton, providing 360-degree impact absorption during transit.
Note: The following is a textual representation of a visual breakdown. Actual photos would accompany a real product listing.
Image 1: External Housing - Front View
This image shows the complete controller assembly. The dominant feature is the large, central rectangular multi-pin connector port. The connector is surrounded by a grooved, waterproof seal track. Metal threaded inserts on either side of the port are for the wiring harness connector's locking bolts, ensuring a vibration-proof connection. The housing is a matte-black, injection-molded, glass-filled nylon composite for high strength and thermal stability. A product identification label is prominently affixed to the top face, clearly displaying the part number KHR2680 / KHR2679, serial number, and a 2D data matrix barcode for traceability.
Image 2: External Housing - Rear View
The rear view reveals the unit's heat-dissipating fin array, cast directly into the aluminum backplate. These fins are passive cooling elements designed to draw heat away from the internal power transistors and microprocessor, maintaining optimal operating temperatures even when the engine bay is heat-soaked. The mounting bosses with metal threaded inserts are visible at each corner, designed to bolt the unit securely to the excavator's chassis or an isolation mount inside the cab or electrical cabinet.
Image 3: Internal Board - Component Side
With the rear heatsink removed, the main Printed Circuit Board (PCB) is visible. This high-resolution image focuses on the densely packed electronic components. Key items include a central 32-bit Renesas or equivalent microcontroller unit (MCU), several Application-Specific Integrated Circuits (ASICs) dedicated to Pulse Width Modulation (PWM) for valve control, and rows of MOSFETs and capacitors forming the high-current driver stages. Conformal coating is visible as a glossy, translucent layer over all components and solder joints, protecting against humidity, dust, and chemical vapors.
Image 4: Internal Board - Solder Side
This image depicts the reverse side of the PCB, showcasing the high-quality, lead-free HASL (Hot Air Solder Leveling) finish. The multi-layer board architecture is evident from the via holes and internal ground/power planes. The large, gold-plated edge connector fingers that interface with the external harness connector are shown in sharp focus, highlighting their corrosion-resistant properties and ability to carry multiple signals and high currents reliably.
This control panel is precision-engineered for direct fit and function with the following machine models. Cross-compatibility between the Sumitomo and Case models is due to their shared design and manufacturing lineage.
| Brand | Model |
|---|---|
| Sumitomo | SH200A3 |
| Sumitomo | SH120-3 |
| Sumitomo | SH200-3 |
| Sumitomo | SH300-3 |
| Case | CX210 (Specific series, verify model year) |
| Case | CX350 (Specific series, verify model year) |
Dual Part Number Validity: Part numbers KHR2680 and KHR2679 are functionally identical and fully interchangeable. The difference often relates to a minor manufacturer revision, production date, or a specific machine's bill of materials. You can install KHR2680 in a machine that originally had KHR2679, and vice-versa, with full confidence.
Model Year Verification is Critical: While designed for the listed base models (SH200-3, CX210, etc.), there can be serial number breaks or mid-production changes. It is imperative to compare your failed unit's physical connector pin-count and shape with our product image and verify your machine's serial number with our sales team before ordering. Providing a photo of your original controller's label is the fastest way to ensure 100% compatibility.
Case Model Nuances: This controller is compatible with specific early-generation Tier 2/3 engine configuration Case CX210 and CX350 excavators. It is not compatible with the newer Case C Series (e.g., CX210C) or models with Selective Catalytic Reduction (SCR) exhaust aftertreatment. Always confirm visually.
Not for Other Series: This unit is specifically for A3 and -3 series Sumitomo machines. It will not work on earlier dash-2 series or later -5, -6, or -7 series Sumitomo excavators, which utilize entirely different electronic architectures.
Note: The following is a textual walkthrough of an exploded installation diagram. A visual guide with numbered steps would be included in the official product documentation.
The installation diagram is a step-by-step, exploded-view visual guide for replacing an old controller with a new KHR2680 unit.
Step 1: Safety & Access
The diagram begins with a large red "X" over a battery symbol, indicating "Disconnect Batteries First." An arrow points to the excavator cab, with a highlighted cover panel beneath the seat or behind a side console, indicating "Remove Access Panel per OEM Service Manual."
Step 2: Old Unit Removal
The sub-diagram focuses on the failed controller in situ. A magnified call-out circle shows the two threaded locking bolts on the harness connector. Step-by-step arrows illustrate:
A) Completely loosen but do not force the two locking bolts.
B) Grasp the connector body firmly and pull it straight out without twisting or using a screwdriver as a pry bar.
C) Remove the four mounting bolts securing the controller's housing to the chassis bracket.
Step 3: New Unit Inspection
A drawing of the new KHR2680 unit is shown with a bright green "PASS" stamp. Leader lines check for:
Bent pins inside the connector interface (compare to old unit).
Clean mounting surface and intact o-ring/gasket.
Step 4: Installation
The diagram reverses the removal process:
A) Position the new controller into the chassis bracket and hand-tighten the four mounting bolts first to prevent cross-threading.
B) Torque mounting bolts to OEM specification (typically 8-10 Nm).
C) Apply a thin film of dielectric grease to the harness connector seal (optional but recommended).
D) Push the harness connector firmly into the new unit until fully seated, then tighten the two locking bolts evenly.
Step 5: Re-connection and Verification
The final panel shows the battery being reconnected. A graphic of an instrument cluster shows all warning lights illuminating and then extinguishing during the self-test, with the engine symbol glowing to indicate "Ready to Crank." A large green checkmark concludes the guide.
| Detail | Description |
|---|---|
| Shipping Methods | By Air, By Sea, By Express (FedEx, UPS, DHL, TNT, etc.). The specific arrangement will be based on the cargo situation and destination. We select the fastest, most economical, and safest route for your order. |
| Estimated Delivery Time | Based on the shipping time of the logistics company. The arrival time shown by the carrier's official tracking system shall prevail. For critical downtime, express shipping (3-7 days) is always recommended over economy sea freight. |
| Packing | Inner: Anti-static shielded bag or PP bag. Outer: Heavy-duty, export-grade corrugated carton box with custom-cut, high-density protective foam. This double-layer protection system ensures your electronic component survives the rigors of global transport without concealed damage. |
| Payment Terms | We offer flexible terms to suit your business: T/T (Telegraphic Transfer), L/C (Letter of Credit), Western Union, MoneyGram, D/A (Documents against Acceptance), and D/P (Documents against Payment). A 30% deposit with a 70% balance before shipment is standard for new customers. |
| Policy Point | Terms |
|---|---|
| Merchant Return Policy | Products shipped are not returnable or exchangeable. Due to the sensitive electronic nature of these parts, we cannot accept returns once an item has left our facility, as we cannot verify proper handling, installation, or packaging for return. All sales are final. |
| Quality Guarantee | Every single board is subjected to a rigorous dual-stage testing protocol: 1. Function Test: Simulated load and full signal I/O check on a custom test bench. 2. Burn-in Test: Powered on for an extended duration at elevated temperature. This guarantees the unit you receive is not Dead on Arrival (DOA) and performs to specification. |
| Pre-Shipment Confirmation | We understand the importance of trust. Before shipment, we will, upon your request, provide clear, high-resolution photos and a real-time video of your specific unit undergoing a live function test on our bench, confirming both the correct part number and perfect operational condition. We only ship with your approval. |
Q1: What is the difference between KHR2680 and KHR2679?
A: There is no functional difference. These are interchangeable part numbers for the same controller. You can safely replace one with the other.
Q2: Can I just plug this in, or do I need a dealer to program it?
A: This is a true plug-and-play controller. No dealer software, laptop, or programming is required. Simply install it, connect the battery, and start the machine. The controller contains its own pre-loaded operating firmware.
Q3: How can I be 100% sure this is the right part for my machine?
A: The most reliable method is to compare the physical connector and label on your failed unit with the photos we provide. Contact our sales team with your machine's exact model and, most importantly, a photo of your old controller's label. We will verify compatibility before you purchase.
Q4: My old unit looks physically different. Will this still work?
A: Sumitomo often had multiple approved suppliers for a single part. The KHR2680/KHR2679 is the standardized replacement that supersedes many earlier, visually distinct part numbers. As long as the connector plug is an exact match, the controller will be compatible.
Q5: What is your quality process to prevent a Dead-on-Arrival (DOA) unit?
A: Our quality process is 100% and not based on batch sampling. Every unit is powered up, monitored for correct voltage and current draw, and tested with a bank of relays and potentiometers that simulate real sensors (pressure, angle, temperature) and actuators (solenoid valves). It must pass every test point before it is sealed in its protective packaging.
For pricing, bulk orders, or technical support, contact your COGENG supplier today.
✅ Direct OEM Replacement — No programming required.
✅ Durable — Epoxy-sealed PCB and ruggedized housing built for harsh job site conditions.
✅ In Stock — Ready for immediate dispatch. Fast shipping worldwide from our centralized distribution center.
*shipping Details Return Sales*
Please provide your machine model and serial number for a final compatibility verification. This ensures zero delays and gets your excavator back to work without a hitch.
Sales Price: Please contact COGENG sales customer service for specific and most up-to-date pricing, as well as dealer discount structures.
Shipping Method: The specific arrangement will be based on the cargo situation, weight, and your preferred balance of speed versus cost.
Estimated Delivery Time: It is based on the shipping time of the logistics company, and the arrival time shown by the carrier's tracking system shall be the final authority.
Contact Details: Bottom line of all communication. Reach out to us via the platform's messaging system or directly to the sales representative's email and WhatsApp shown below.
Merchant Return Policy: The products shipped are not returnable or exchangeable. Please ensure full compatibility confirmation before purchase.
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