What is excavator controller?

Excavator ECU controller (also named main board or control unit and computer) are generally referred to in the industry as the Electronic Control Unit (ECU), Electronic Computer or Controller. Depending on the manufacturer, it also seems like Electronic Control Module (ECM) OR Machine Control Unit (MCU). The controller acts as the central brain or main control part for the entire machine. It is a rugged computer board that manages the engine and hydraulic systems to optimized performance, fuel efficiency, and safety.

What is the controller ECU category?

Excavator control unit is mainly include: cab main controller, hydraulic controller (ECU), engine controller (ECM）, throttle motor controller, drive motor controller, AC controller, wipe controller.

What is key control responsibilities?

1. Engine & Pump Management: It executes programs to control the engine's fuel injection and the hydraulic pump's discharge rate, ensuring they work together efficiently
2. Work Equipment Control: It translates operator joystick movements into precise control signals for the main control valve, which then directs hydraulic fluid to the cylinders for digging, lifting, and swinging.
3. System Integration: It collects operation data, performs diagnostics, and can support advanced features like machine guidance or semi-automatic control modes

What controllers we have?

1. ISUZU engine controller: 4JJ1 controller, 4HK1 controller, 6HK1 controller, 6UZ1 controller, 6WG1 controller, etc.
2. Main controller (hydraulic controller or ECU): KHR3314 KHR2680 KHR2692 for Case CX A models, KHR10036 for Sumitomo SH A5 or Case CX B models, KHR51022 (A) KHR51072 (B) for Case CX C models or Sumitomo SH A6 models, KHR57010 KHR54910 for Case CX D models or Sumitomo SH A7 models.
3. Throttle motor controller: KHR1346 KHR1713 for Sumitomo SH200, KHR13890 KHR13900 for Sumitomo SH75 or Case CX75SR
4. Wipe controller: KHN3392 176180-0070 176810-0021 widely used for Sumitomo SH A3/A5/A6 excavators or Case CX A/B/C excavators
5. AC controller: KHR27840 for Sumitomo SH A5/A6 excavators or Case CX B/C excavators