Struggling to master the E21 NC press brake system? Learn how to operate and optimize your machine with ease in this comprehensive user guide.

This guide will walk you through the essential steps for setting up, operating, and maintaining your E21 NC press brake system. From configuration to practical usage tips, you’ll gain the knowledge to maximize machine efficiency. Ready to dive into the specifics of operating the E21 NC Press Brake system? Let’s explore the detailed setup steps next.

Introduction of E21 System User Guide

In modern metalworking, the press brake is an essential piece of equipment for bending sheet metal. This article provides a detailed NC press brake operation tutorial, specifically for machines equipped with the E21 system. Whether you’re new to press brakes or need a refresher, this guide will help you understand how to set up, operate, and calibrate your machine for optimal performance.

Part 1 Fill The Oil and Cable Connections

Filling the Oil Tank Properly

To ensure the smooth operation of the E21 NC Press Brake, it is essential to fill the oil tank with anti-wear hydraulic oil. This type of oil enhances the machine’s performance by reducing friction and preventing wear on hydraulic components. When filling the tank, use the designated oil filling port, ensuring the oil level is within the recommended range. Avoid overfilling or using low-quality oil, as this may lead to system inefficiencies or damage. Regularly check the oil level and replace it as needed to maintain optimal press brake functionality.

Connecting the NC Press Brake to Power

Before operating the NC press brake, ensure it is properly connected to a three-phase power source. This is essential for stable performance and prevents electrical failures. Verify that the power supply voltage matches the machine’s specifications. Use a qualified electrician to make the connections, ensuring all wiring is secure and follows safety regulations. After connection, check for proper grounding to prevent electrical hazards. Turn on the main power switch and inspect the control panel for any error messages. If everything is correct, the system is ready for operation. Always follow the manufacturer’s guidelines for safe and efficient use.

Switch on the power source

Before operating the E21 NC Press Brake, ensure that the machine is properly connected to a stable power source. Check that the voltage matches the machine’s requirements to prevent electrical issues. Locate the main power switch, usually positioned on the side or back of the machine, and turn it to the “ON” position. Wait a few seconds for the system to initialize. The control panel should display startup information, indicating that the system is ready for operation. If any error codes appear, refer to the user manual for troubleshooting. Always follow safety protocols before proceeding with bending operations.

Turn On the Machine Power Switch

Before operating the E21 NC Press Brake, ensure that the power supply is stable and meets the required voltage. Locate the main power switch on the machine’s control panel or electrical cabinet. Turn the switch to the “ON” position, and wait for the system to initialize. Check if the controller screen lights up and displays the startup interface. Listen for any unusual sounds from the machine, which could indicate electrical issues. If the system does not start properly, inspect the power source and emergency stop button. Always follow safety protocols and wear appropriate protective gear before proceeding with machine operation.

Connecting the Pedal Switch

To ensure proper operation of the E21 NC Press Brake, the pedal switch must be securely connected to the machine. Begin by locating the designated pedal connection port on the machine’s control panel or base. Align the pedal switch connector with the port and insert it firmly until it clicks into place. Ensure the connection is tight to prevent any accidental disconnection during operation. Once connected, test the pedal by pressing it lightly to confirm responsiveness. If the machine does not react, check for loose connections or power issues. A properly connected pedal enhances safety and control during bending operations.

Powering On the E21 Press Brake

To begin operating the E21 NC Press Brake, first, locate the main power switch on the machine’s control panel. Ensure that the machine is properly connected to a stable power source. Next, turn the switch to the “ON” position. You should see indicator lights or a display screen activate, confirming that the machine is powered up. Allow the system a few seconds to initialize before proceeding with any operations. If the machine does not turn on, check the power supply, emergency stop button, and circuit breakers to ensure everything is functioning properly. Always follow safety guidelines when handling electrical components.

Powering On the E21 Press Brake

To begin operating the E21 NC Press Brake, first locate the power switch on the machine’s control panel. Turn the switch to the “ON” position, and the indicator light will illuminate, confirming that the system is receiving power. This step ensures that all electrical components are properly activated and ready for operation. If the indicator light does not turn on, check the power supply and connections to ensure everything is functioning correctly. Once powered on, the press brake is ready for further setup, including selecting bending parameters and adjusting tooling for precise metal bending operations. Always follow safety procedures before proceeding.

Turn on the Pump Switch Properly

Before operating the E21 NC Press Brake, ensure that the machine is properly connected to the power supply. Locate the pump switch on the control panel and turn it on to activate the hydraulic system. You should hear a steady hum, indicating that the pump is running smoothly. Check the hydraulic oil level and confirm that there are no leaks or abnormal noises. If the system does not start properly, inspect the power connections and emergency stop button. A properly activated pump ensures stable pressure and smooth bending operations, preventing errors in the bending process. Always follow safety guidelines when handling the machine.

Releasing the E-Stop on Pedal

To resume normal operation of the E21 NC Press Brake, you must first release the emergency stop (E-stop) on the step pedal. The E-stop is a crucial safety feature that immediately halts machine functions to prevent accidents. To release it, press down firmly on the E-stop button or twist it counterclockwise (depending on the model) until it pops back to its original position. Once released, check the control panel to confirm that the system is reset. Always ensure the pedal is in a stable position before proceeding with machine operation. Properly handling the E-stop enhances safety and ensures smooth bending operations.

Press ENTER to Start the Machine

Pressing the ENTER key is the final step to initiate the E21 NC Press Brake and begin the bending operation. Once all parameters, such as bending angle, material thickness, and backgauge position, are correctly set, simply press ENTER to confirm and execute the program. The system will then guide the ram to perform precise bending according to the preset values. Always ensure that the workpiece is properly positioned and that all safety precautions are in place before activating the machine. This simple yet crucial action ensures efficient, accurate metal bending, optimizing both productivity and quality in sheet metal fabrication.

Check tVerify the Main Motor Rotation

Before operating the E21 NC Press Brake, it is crucial to verify the main motor’s rotating direction to ensure proper machine functionality. Incorrect rotation can lead to operational inefficiencies or even potential damage to the system. To check, turn on the power and observe the motor’s movement. If the rotation is incorrect, swap any two power lines to adjust the phase sequence. Always confirm the motor runs smoothly before proceeding with machine operations. Regularly inspecting motor direction helps prevent unnecessary wear and ensures consistent bending accuracy and machine longevity.

Clockwise Rotation Indicates Accuracy

When operating the E21 NC Press Brake system, it is crucial to ensure that the rotation direction of the adjustment knob or motor is correct. If it rotates clockwise, this generally indicates that the movement is functioning properly, ensuring precise positioning and consistent bending accuracy. A counterclockwise rotation may signal an incorrect setting, potentially leading to errors in bending angles or misalignment. Always verify the rotation direction before proceeding with any bending operations to prevent issues. Proper machine setup and calibration help maintain efficiency, prolong tool life, and enhance overall production quality in metal fabrication.

Rotating Anti-Clockwise Explained

If it is rotating anti-clockwise, the motion follows a direction opposite to that of a clock’s hands. In mechanical systems, anti-clockwise rotation often indicates a reverse movement or a specific functional requirement, such as loosening a fastener or engaging a particular gear mechanism. In press brakes and other industrial machines, motor or axis rotation direction affects performance, precision, and safety. Ensuring correct rotation prevents mechanical failures and optimizes efficiency. Operators should verify rotational direction during setup to avoid operational issues. If unexpected anti-clockwise rotation occurs, checking the motor wiring and system settings is crucial.

Press the emergency stop

In case of any malfunction or safety risk while operating the E21 NC Press Brake, immediately press the emergency stop button. This action will instantly cut off power to the machine, preventing further movement and ensuring operator safety. Always ensure the emergency stop is easily accessible before starting any bending operation. Regularly inspect the button to ensure it is functional and free from obstructions. After activating the emergency stop, identify and resolve the issue before restarting the machine. Proper use of this safety feature minimizes risks and enhances workplace safety.

Swap the Two Wire Connections

When operating the E21 NC press brake, incorrect wiring can cause malfunctions in movement direction or system responses. If the machine’s backgauge or ram is moving in the wrong direction, a simple solution is to exchange the two wire connections on the motor or control panel. This adjustment reverses the motor’s phase sequence, ensuring proper operation. Before making any changes, turn off the power and verify the wiring diagram to avoid potential electrical hazards. After swapping the wires, restart the machine and test movement to confirm correct operation. This quick fix helps maintain efficiency and prevents unnecessary downtime.

Part 2 Machine Start-up

Powering On the E21 NC Press Brake

Before operating the E21 NC Press Brake, ensure that the machine is properly connected to a stable power source. Locate the main power switch on the electrical panel, usually positioned on the side or rear of the machine. Turn the switch to the “ON” position and wait for the system to initialize. The control panel should display startup information, indicating that the system is ready for use. Check for any error messages or warnings on the screen. If everything appears normal, proceed with selecting your bending parameters. Always follow safety guidelines when handling electrical components to prevent potential hazards.

Powering On the E21 Press Brake

To begin operating the E21 NC Press Brake, first locate the main power switch on the control panel. Turn the switch to the “ON” position, and you will see the indicator light illuminate, signaling that the machine is receiving power. Ensure that the voltage supply is stable and correctly configured to prevent system errors. Once powered on, allow the system a few seconds to initialize. Check the E21 controller screen to confirm that it is displaying the default home screen. If any warning messages appear, troubleshoot accordingly before proceeding. Proper power activation is essential for safe and efficient operation.

Starting the Oil Pump Properly

To begin operating the E21 NC Press Brake, the first step is to start the oil pump. Ensure that the power supply is stable and that the machine is properly connected. Press the oil pump start button on the control panel to activate the hydraulic system. You should hear a steady hum, indicating that the pump is running smoothly. Check for any unusual noises or vibrations. Allow the pump to circulate oil evenly before proceeding with machine operation. Properly starting the oil pump ensures stable pressure, smooth bending performance, and long-term machine reliability.

Releasing the Emergency Stop Switch

Before operating the E21 NC Press Brake, ensure the emergency stop switch is properly released. This switch is a critical safety feature designed to halt the machine immediately in case of an emergency. To release it, turn the switch clockwise until it pops out, indicating the system is reactivated. After releasing the switch, check the control panel for any error messages and reset the system if necessary. Always verify that the machine is in a safe and ready state before proceeding with operations. Proper handling of the emergency stop switch ensures safety and prevents unnecessary downtime.

Releasing the E-Stop on Step Pedal

To resume operation of the E21 NC Press Brake, you need to release the emergency stop (E-stop) on the step pedal. First, check if the E-stop button is engaged—if so, turn it clockwise to reset it. Then, ensure the foot pedal is in the correct position and free from obstructions. Press the pedal lightly to confirm that the system responds correctly. If the machine does not start, verify all safety interlocks and reset the controller. Releasing the E-stop properly ensures smooth operation and prevents unnecessary downtime during metal bending processes.

Press Brake Operation: ENTER Key

Pressing the ENTER key activates the E21 NC Press Brake, initiating the bending process. Before pressing ENTER, ensure that all parameters, such as bending angle, back gauge position, and pressure settings, are correctly programmed. Once confirmed, pressing ENTER signals the machine to execute the bending sequence. Operators should monitor the process to ensure smooth operation and maintain precision. Safety measures, such as keeping hands clear of moving parts and wearing protective gear, are essential. Proper use of the ENTER function improves efficiency, reduces errors, and ensures consistent bending accuracy in metal fabrication.

Part 3 Modes Demonstration

Understanding Single Mode on E21

The single mode in the E21 NC press brake allows operators to process individual bending steps manually. This mode is ideal for small-batch production and custom bending tasks, providing flexibility and precise control over each operation. Users can set bending angles, back gauge positions, and stroke limits before executing each step separately. The system ensures accurate performance while allowing real-time adjustments. Single mode is particularly useful for prototype development and one-time projects, ensuring high precision without complex programming. Mastering this mode can enhance efficiency and minimize errors in sheet metal bending operations.

Understanding Jog Mode in E21

The Jog Mode in the E21 NC Press Brake allows operators to manually control the ram’s movement for precise positioning. This mode is useful for setting up tooling, testing bend angles, and ensuring accuracy before full operation. By pressing the jog button, the ram moves incrementally, giving operators full control over bending depth and alignment. It is particularly beneficial for fine adjustments, reducing errors and improving work efficiency. Operators should use jog mode carefully to prevent over-adjustment. Mastering this function enhances machine accuracy and ensures consistent bending results, making it an essential feature for setup and calibration.

Understanding Continuous Mode

The continuous mode in the E21 NC press brake allows for uninterrupted bending operations, increasing efficiency in mass production. When activated, the machine automatically cycles through bending sequences without requiring the operator to restart each time. This mode is ideal for high-volume sheet metal processing, reducing downtime and improving productivity. Operators should ensure proper tool alignment and material positioning before enabling continuous mode to maintain accuracy and consistency. Additionally, regular monitoring is essential to prevent misalignment or errors. By utilizing continuous mode effectively, manufacturers can achieve faster production cycles and consistent bending quality, optimizing overall operational performance.

Part 4 System Operation

E21 NC Press Brake Programming Guide

The E21 NC Press Brake offers a simple yet powerful programming interface for efficient metal bending. Users can set bending angles, back gauge positions, and step sequences via the digital control panel. The system supports multi-step programming, allowing operators to store multiple bending steps for complex projects. To optimize performance, ensure accurate material input, proper tool selection, and regular system calibration. The E21 controller provides a user-friendly experience, making it ideal for small to medium-scale metal fabrication. By mastering E21 NC programming, users can increase productivity and bending precision, reducing errors and material waste.

Set YP to 93, XP to 50 for Bending

To achieve precise bending results with the E21 NC Press Brake, it is essential to adjust the YP and XP values correctly. Set the YP value to 93 to ensure accurate positioning of the ram, which directly affects bending depth and consistency. Adjust the XP value to 50 to optimize the back gauge position for precise material alignment. Proper calibration of these parameters enhances bending accuracy, reduces material waste, and improves overall efficiency. Regularly checking and fine-tuning these settings can significantly enhance the machine’s performance, ensuring high-quality bends with minimal errors in metal sheet fabrication.

Correcting a 93-Degree Bend

If the bending angle is 93 degrees instead of the expected 90 degrees, adjustments are needed to improve accuracy. This issue often arises due to material springback, incorrect punch and die selection, or insufficient pressure settings. To correct it, you can increase the tonnage, use a tighter V-die opening, or apply over-bending techniques to compensate for springback. Additionally, checking the backgauge positioning and press brake calibration can help achieve the precise 90-degree angle. Regularly inspecting the material thickness and bending parameters ensures consistency and minimizes errors in production. Proper adjustments will enhance bending accuracy and overall efficiency.

Adjusting Bending Length Accuracy

The current bending length is 55 mm, but the desired value should be 50 mm. To achieve precise bending, check the E21 NC controller settings and ensure the backgauge position is correctly calibrated. Adjust the bending parameters in the control system and verify the punch and die alignment to minimize deviations. If necessary, fine-tune the material positioning and perform test bends to confirm accuracy. Regular maintenance of the backgauge and hydraulic system also helps maintain consistent results. Proper adjustment ensures precision bending, reducing material waste and improving production efficiency.

Part 5 Calibration

Y-Axis Calibration for E21   

Y-axis calibration on the E21 NC Press Brake ensures accurate bending depth and consistency in metal fabrication. Proper calibration aligns the ram’s movement with the programmed bending parameters, preventing deviations and material waste. To calibrate, access the E21 controller, navigate to the Y-axis settings, and input the correct reference values based on the tooling and material thickness. Perform test bends and measure the results to fine-tune the settings. Regular calibration maintains precision and extends tool life, ensuring high-quality bends. Always follow the manufacturer’s guidelines to achieve optimal performance and prevent misalignment issues in press brake operations.

Adjusting YP for Precise Bending

Setting the YP value to 93.2 determines the slider’s depth during bending. A higher YP value allows the slider to press deeper, resulting in a smaller bending angle. Conversely, reducing the YP value limits the slider’s movement, producing a larger bending angle. Proper adjustment ensures accurate and consistent bending results, minimizing material waste and enhancing efficiency. Operators should fine-tune the YP setting based on material thickness and desired angle to achieve optimal precision. Regular calibration of the YP value is essential for maintaining high-quality bends in sheet metal fabrication.

X-Axis Calibration Guide

Proper X-axis calibration is crucial for ensuring accurate backgauge positioning in the E21 NC press brake. To calibrate, access the parameter settings on the E21 controller and enter the actual backgauge position. Use a precise measuring tool to verify the distance between the backgauge and the bending line. Adjust as needed and save the settings. Regular calibration prevents dimensional errors and enhances bending consistency. Always recheck after tooling changes or maintenance. A well-calibrated X-axis improves efficiency, reduces rework, and ensures high-precision metal bending operations.

Double-Click the “P” for Setup

When operating the E21 NC Press Brake, double-clicking the “P” key is a crucial step to enter the programming mode. This action allows users to set bending angles, back gauge positions, and stroke parameters efficiently. Once inside the programming mode, operators can input numerical values and confirm settings to ensure precise bending operations. This function enhances workflow efficiency, reducing setup time and minimizing errors. Always ensure that all settings are correctly entered before proceeding with the bending process to achieve optimal results. Mastering this step simplifies the E21 NC controller operation, making metal bending more accurate and efficient.

Enter Password 1212 on CONST Page

To access the advanced settings of the E21 NC Press Brake, navigate to the CONST page on the controller interface. When prompted, enter the password 1212 to unlock restricted configuration options. This allows users to adjust system parameters, optimize bending precision, and modify operational settings as needed. Ensuring accurate input of the password is crucial to prevent access issues. Once unlocked, carefully review and configure the settings according to your metal bending requirements. If unsure about specific adjustments, refer to the user manual or contact HARSLE’s support team for assistance.

Choose the Right X-Tea on TEACH

On the TEACH page, selecting the right X-Tea ensures you get the best learning experience tailored to your needs. Each X-Tea option is designed to provide comprehensive insights, making it easier for users to understand key concepts. Whether you’re looking for a beginner-friendly guide or an advanced technical deep dive, the TEACH page offers structured choices. Simply navigate through the available X-Tea selections, compare their features, and choose the one that best fits your learning goals. With clear instructions and well-organized content, you can quickly grasp essential knowledge and apply it effectively in real-world scenarios.

Enter the Exact Bending Length

When setting up the E21 NC Press Brake, the actual bending length must be accurately entered to ensure precise bending results. If the required bending length is 55mm, input 55 into the control system. This ensures that the backgauge and bending parameters align correctly with the workpiece dimensions, preventing errors in the final bend. Accurate input minimizes material waste and enhances productivity. Always verify the entered values before starting the operation to avoid misalignment. Proper data entry in the E21 system is crucial for achieving consistent bending accuracy and optimizing the overall efficiency of the press brake.

Double-Click P to Resume Bending

When operating the E21 NC Press Brake, you can quickly resume the bending process by double-clicking the “P” button on the controller. This function is especially useful when you need to reposition the workpiece or make adjustments before continuing the bending sequence. Once you double-click “P,” the machine will return to the previous bending position, allowing for a smooth and efficient workflow. This feature helps improve operational speed and accuracy, reducing downtime between bends. Mastering this function ensures higher productivity and precision in sheet metal forming. Always check the positioning before proceeding to avoid misalignment.

Part 6 Production Demonstration

Bending at a 90-Degree Angle

A 90-degree bending angle is a common requirement in metal fabrication, ensuring precise and consistent results. Achieving this angle depends on factors such as material thickness, die selection, and press brake settings. The correct V-die width and punch radius play a crucial role in maintaining accuracy. Additionally, adjusting bending force and back gauge positioning ensures repeatability. Operators should also consider springback compensation to prevent deviations. Using a CNC or NC-controlled press brake helps maintain consistency across multiple bends, reducing errors and improving efficiency. Proper calibration and tooling selection are essential for achieving a perfect 90-degree bend every time.

Understanding Bending Length in E21

The bending length in the E21 NC Press Brake system refers to the maximum sheet metal length that can be bent in a single operation. It is determined by the machine’s working table size and tooling configuration. Properly setting the bending length ensures accurate bending results, minimizes material waste, and prevents tool overloading. Users should always check machine specifications, choose appropriate punches and dies, and adjust backgauge positioning for precise results. Understanding bending length is essential for optimizing productivity and achieving consistent bending accuracy in sheet metal fabrication.

Part 7 Switch Off

Pump Stop Switch Operation

The pump stop switch is a crucial component in the E21 NC Press Brake system, allowing operators to safely turn off the hydraulic pump when the machine is not in use. Pressing the switch immediately stops the pump, preventing unnecessary energy consumption and reducing wear on the hydraulic system. It is essential to always turn off the pump after operation to enhance machine lifespan and ensure workplace safety. Before restarting, check that the pump is properly engaged to avoid system errors. Regular maintenance and proper shutdown procedures help maintain optimal press brake performance.

Press the E-Stop for Safety

The E-stop (Emergency Stop) button is a crucial safety feature on the E21 NC Press Brake. Pressing this button immediately halts all machine operations, preventing potential hazards in emergency situations. Operators should use the E-stop in cases of sudden malfunctions, unexpected material movement, or potential safety risks. After activation, the machine must be reset before resuming operation. Regularly check the E-stop functionality to ensure reliability. Proper use of this feature enhances workplace safety and protects both the operator and the equipment. Always follow safety guidelines when operating the E21 NC Press Brake.

Power Off the E21 NC Press Brake Properly

Before performing any maintenance or shutting down the E21 NC Press Brake, it is crucial to turn off the power switch. Locate the main power switch on the control panel and switch it to the “OFF” position. This ensures electrical safety, preventing accidental startups or malfunctions. Always verify that the machine is fully powered down before performing any adjustments or inspections. Proper shutdown procedures help extend the machine’s lifespan and ensure operator safety. Additionally, disconnecting the power during long periods of inactivity reduces energy consumption and protects electronic components from potential power surges.

Conclusion

By following this E21 system user guide, you should now have a solid understanding of how to operate an NC press brake with the E21 system. Mastering the essential steps such as hydraulic oil filling, electrical connections, system calibration, and bending demonstrations will allow you to maximize the efficiency and precision of your press brake. Proper setup and calibration are critical for ensuring consistent, accurate bends and optimizing the performance of your machine in a production environment. This knowledge will not only help you achieve high-quality results but also extend the lifespan of your equipment and reduce downtime due to operational errors.

If you encounter any issues or need further clarification on any steps, our expert technical support team is always ready to assist you. E21 system user guide We are committed to ensuring you get the best performance from your NC press brake, and we provide comprehensive after-sales service to ensure smooth operations.

Should you require more information about the E21 system user guide, or if you’re interested in learning more about our range of press brakes and other industrial machinery, we invite you to visit HARSLE. Our website offers additional resources, including product manuals, video tutorials, and detailed specifications to help you get the most out of your equipment. For any inquiries, feel free to reach out to us directly through the contact details provided on our website.

For more information on our press brakes and other machinery, visit HARSLE.