Fixing Lenze 9400 Fault Codes


Fault codes in the Lenze 9400 series can be a significant source of frustration in industrial automation. As an industrial automation product specialist, understanding these codes and knowing how to troubleshoot them is crucial. We'll explore what Lenze 9400 fault codes are, common issues that trigger them, and effective strategies for preventing and resolving them. Whether you're an operator or a technician, these insights will help keep your system running smoothly.

Exploring the Lenze 9400

The Lenze 9400 series is a sophisticated range of industrial drives and automation solutions designed to meet the needs of a diverse array of industries. As an industrial automation product specialist, it's important to grasp the key features and benefits that set this series apart.

At its core, the Lenze 9400 series is built for flexibility, reliability, and ease of integration. It's designed to seamlessly connect with various industrial systems and offers comprehensive control over machinery. The modular design allows for customization, meaning you can tailor the drive to specific applications, from simple conveyor belts to complex robotic systems.

One of the standout features of the Lenze 9400 series is its wide compatibility with multiple communication protocols. This adaptability ensures smooth integration into existing setups, reducing the need for extensive reconfigurations. Whether you're dealing with fieldbuses like CANopen or Ethernet-based systems like PROFINET, the Lenze 9400 can fit right in.

The drives in this series are also renowned for their robust build quality. They're designed to withstand the harsh conditions often found in industrial environments, including high temperatures, dust, and vibration. This durability contributes to their longevity and reliability, making them a trusted choice for automation engineers and plant operators.

Another key aspect of the Lenze 9400 series is its user-friendly interface and diagnostics. The intuitive design makes it easy to configure and operate, reducing the learning curve for operators. The built-in diagnostic fault codes, including fault code displays, provide valuable insights into system health, enabling quick identification and resolution of issues.

Resolving Lenze 9400 error codes

In industrial automation, fault codes serve as critical indicators that something within a system isn't operating as expected. In the case of the Lenze 9400 series, these fault codes are designed to help operators and technicians quickly identify issues and take corrective action. They are part of the drive's diagnostic system, which continuously monitors the internal components and external conditions to ensure optimal performance.

Fault codes in the 9400 lenze series generally consist of a combination of letters and numbers that represent specific types of errors. These codes are displayed on the drive's interface or control panel, alerting users to potential problems. The key to effectively dealing with these fault codes is understanding their meaning and knowing how to troubleshoot them.

Common Lenze 9400 Fault Codes

The Lenze 9400 series has a variety of fault codes list , each pointing to a unique issue. Here's a list of some of the most common fault codes and what they represent

Lenze 9400 Fault Codes Table

Fault CodeCauseRemedy

- Check motor load, ensure it does not exceed the rated value.
- Check cables and connections for damage.
- Check drive current settings.


- Check mains voltage.
- Check cables and connections for damage.
- Check drive voltage settings.

E03Sensor Error

- Check sensor and its cables for damage.
- Check sensor connection to the drive.
- Check sensor settings in the drive.

E04Control Error

- Check drive software.
- Contact Lenze for support.

E05System Error

- Check drive software.
- Contact Lenze for support.


- Check drive ventilation.
- Ensure there is enough free space around the drive.
- Reduce motor load.

E07Communication Error

- Check communication cables.
- Check communication settings.

E08Backup Error

- Check backup battery.
- Check backup memory.

E09Parameter ErrorCheck drive parameters.
E11Rotor Position Sensor Error

- Check rotor position sensor and its cables for damage.
- Check sensor connection to the drive.
- Check sensor settings in the drive.

E12Speed Sensor Error

- Check speed sensor and its cables for damage.
- Check sensor connection to the drive.
- Check sensor settings in the drive.

E13Braking Error

- Check braking system.
- Check braking settings in the drive.

E14Winding Switching Error

- Check motor cables.
- Check motor winding switch.

E21Power Part Error- Contact Lenze for support.
E22Fan Control Error

- Check fan.
- Check fan settings in the drive.

E23Software Error

- Check drive software.
- Contact a qualified professional

E24Memory ErrorContact a qualified professional

Understanding these common fault codes is crucial for anyone working with the Lenze 9400 series. By identifying the code and following appropriate troubleshooting steps, you can minimize downtime and ensure the safety and efficiency of your automation systems.


Rebooting the Lenze 9400 drive after a fault code

The method for rebooting a drive lenze after a fault code can vary depending on the drive model and software version.
Here are the two most common methods.

1. Reset using the reset button

  • Locate the reset button on the drive. It is usually located on the front of the drive.
  • Press and hold the reset button for 2-3 seconds.
  • Release the reset button.
  • The drive will reboot.

2. Reboot using the software

  • Connect your computer to the drive using a USB or Ethernet cable.
  • Open the Lenze Drive Configurator software.
  • Connect to the drive.
  • Click the "Tools" tab.
  • Locate the Restart button.
  • Click the Restart button.
  • The drive reboots.


  • Before rebooting the drive, make sure that the cause of the fault code is resolved.
  • Rebooting the drive may result in the loss of unsaved data.

Preventing the Lenze 9400 from generating error codes

To prevent Lenze 9400 fault codes from occurring, it is important to follow proper maintenance and operating procedures.

1. Perform regular maintenance

  • Follow the maintenance schedule recommended by Lenze. This may include checking cables, connections, components, and software.
  • Use only genuine Lenze replacement parts.
  • Clean the drive regularly to remove dust and dirt.

2. Operate the drive lenze properly

  • Do not overload the drive. Make sure that the load on the motor does not exceed the rated value.
  • Do not use the drive in unfavorable conditions. Protect the drive from extreme temperatures, humidity, and vibrations.
  • Follow the operating instructions in the Lenze 9400 User's Guide.

3. Use the correct cable

  • Use the cables recommended by Lenze.
  • Ensure that the cables are the correct size and current rating.
  • Check the cables regularly for damage.

4. Use the correct power supply

  • Make sure the mains voltage matches the rated voltage of the drive.
  • Use a voltage regulator if necessary.
  • Ground the drive.

5. Keep the software up to date

  • Regularly update the drive software to the latest version. This can help fix bugs and improve drive performance.
  • Contact Lenze for software updates.

6. Use monitoring

  • Use a monitoring system to track the status of the drive. This can help you identify potential issues before they result in fault codes.
  • Contact Lenze for monitoring solutions.

7. Staff training

  • Ensure that your staff is trained to properly operate and maintain the Lenze 9400 drive.
  • Lenze offers training courses and materials.

By following these tips, you can help prevent Lenze 9400 fault codes and keep your drive running smoothly.

Understanding and managing Lenze 9400 fault codes is vital for ensuring the smooth operation of industrial automation systems. By proactively maintaining equipment, training operators, and controlling the operating environment, you can minimize the risk of encountering fault codes. Address issues promptly and refer to the Lenze 9400 manual for guidance. With these strategies, you can keep your automation systems running efficiently, reducing downtime and improving overall productivity.