1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Graigar Smartgen HGM4010N Generator Controller. The HGM4010N is a single unit genset controller designed for automatic start and remote monitoring applications. It features a 132x64 LCD with backlight, multi-language support, RS485 communication for remote functions, and a CANBUS port for J1939 genset communication.
2. Safety Information
Please read all safety instructions carefully before installation or operation. Failure to follow these instructions may result in personal injury, equipment damage, or property loss.
- Installation and maintenance should only be performed by qualified personnel.
- Ensure all power sources are disconnected before performing any wiring or maintenance.
- Verify correct voltage and current ratings for all connections to prevent damage.
- Protect the controller from moisture, extreme temperatures, and corrosive environments.
3. Package Contents
Upon opening the package, verify that all items listed below are present and undamaged:
- Graigar Smartgen HGM4010N Generator Controller
- User Manual
- Mounting Hardware (clips and screws)

Image: Contents of the Graigar Smartgen HGM4010N package, including the controller, manual, and mounting clips.
Video: An unboxing demonstration of the Smartgen HGM4010N Generator Controller, showing the packaging, controller unit, and included accessories.
4. Product Overview
4.1 Front Panel
The front panel features a 132x64 LCD display for status and parameter viewing, along with push-buttons for operation and navigation. Key buttons include Stop, Auto, C/O (Close/Open), Manual, Start, and navigation arrows (Up, Down, Settings).

Image: Front view of the HGM4010N controller, showing the LCD screen, alarm/status indicators, and control buttons.
4.2 Rear Panel and Connections
The rear panel provides various terminal blocks for electrical connections, including auxiliary inputs/outputs, sensor inputs, AC voltage inputs, current transformer inputs, and communication ports (USB, RS485, CANBUS).

Image: Rear view of the HGM4010N controller, detailing the various terminal blocks for wiring connections.
5. Installation and Setup
Proper installation is crucial for the controller's performance and safety. Refer to the detailed wiring diagrams and instructions in the included physical manual for specific connections.
5.1 Mounting
The controller is designed for panel mounting. Use the provided mounting hardware to secure the unit firmly into a prepared cutout. Ensure adequate ventilation around the unit.
5.2 Wiring Connections
Connect the controller to the generator, mains, sensors, and other auxiliary devices according to the wiring diagrams. Pay close attention to:
- Power Supply: Connect to a stable DC power source.
- AC Voltage Inputs: For 3-phase 4-wire, 3-phase 3-wire, single phase 2-wire, or 2-phase 3-wire systems (120/240V, 50/60Hz).
- Current Transformer (CT) Inputs: Ensure correct polarity and rating.
- Sensor Inputs: Connect engine temperature, oil pressure, and other relevant sensors.
- Communication Ports: Connect RS485 for remote monitoring/control (MODBUS protocol) and CANBUS for J1939 genset communication if applicable.
Always double-check all connections before applying power.
6. Operation
The HGM4010N controller offers various operating modes to manage your generator set.
6.1 Operating Modes
- Stop Mode: The generator is off and will not start automatically. Press the Stop button to enter this mode.
- Auto Mode: The generator will start and stop automatically based on configured conditions (e.g., mains failure, scheduled run times). Press the Auto button.
- Manual Mode: Allows for manual starting and stopping of the generator. Press the Manual button, then the Start button to initiate.
6.2 Basic Control
- Start: Press the Start button to manually start the generator (in Manual mode).
- Stop: Press the Stop button to stop the generator.
- Navigation: Use the Up and Down arrow buttons to scroll through display screens and menu options.
- Settings: Press the Settings button to enter the parameter setting menu.
7. Configuration
The controller's parameters can be configured directly via the front panel buttons or through PC software using the USB or RS485 interface (MODBUS protocol).
- Parameter Settings: Access the parameter menu by pressing the Settings button. Navigate using the arrow keys and confirm selections. A password may be required to modify certain parameters.
- Language Selection: The controller supports multiple languages including Chinese, English, Spanish, Russian, Turkish, French, Portuguese, and Polish. This can be changed in the settings menu.
- Remote Communication: Utilize the RS485 interface for remote control, measuring, and communication functions, adhering to the MODBUS protocol.
- CANBUS Integration: If connected to a J1939 genset, the CANBUS port allows monitoring of ECU data (e.g., water temperature, oil pressure, speed, fuel consumption) and control of start-up, shutdown, and speed adjustments.
Refer to the comprehensive parameter list in your physical user manual for detailed configuration options and values.
8. Maintenance
Regular maintenance ensures the longevity and reliable operation of your HGM4010N controller.
- Cleaning: Keep the controller's front panel clean using a soft, dry cloth. Avoid abrasive cleaners or solvents. The hard-screen acrylic material is designed for wear and scratch resistance.
- Environmental Protection: Ensure the installation environment is free from excessive dust, moisture, and extreme temperatures. The silicone panel and pushbuttons are designed for use in various temperature conditions.
- Connection Checks: Periodically inspect all wiring connections for tightness and signs of corrosion.
9. Troubleshooting
If you encounter issues with your HGM4010N controller, consider the following basic troubleshooting steps. For complex problems or error codes, consult the detailed troubleshooting section in your complete user manual.
- No Power/Display: Check the DC power supply connections and ensure the voltage is within the specified range.
- Generator Fails to Start: Verify the operating mode (Auto/Manual), check fuel levels, battery voltage, and engine fault indicators.
- Communication Issues: Ensure RS485/CANBUS wiring is correct, check baud rates, and verify MODBUS/J1939 protocol settings.
- Sensor Readings Incorrect: Inspect sensor wiring and ensure sensors are correctly calibrated and functioning.
10. Specifications
| Feature | Specification |
|---|---|
| Model Name | HGM4010N |
| Brand | Graigar |
| Product Dimensions | 5.31"L x 4.33"W x 1.73"H |
| Item Weight | 0.7 Pounds (approx. 11.2 ounces) |
| Material | Plastic |
| Color | Black |
| Power Source | DC power supply |
| Voltage Compatibility | 120/240 Volts |
| Frequency Compatibility | 50/60Hz |
| System Compatibility | 3-phase 4-wire, 3-phase 3-wire, single phase 2-wire, 2-phase 3-wire |
| Output Wattage | 6 Kilowatts |
| Special Feature | Automatic Start |
| Display | 132x64 LCD with backlight |
| Communication Interfaces | RS485 (MODBUS), CANBUS (J1939), USB |
| Recommended Use | Commercial |
11. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact your authorized Graigar dealer or customer service. Keep your purchase receipt as proof of purchase.

