1. Introduction
This manual provides essential information for the safe and efficient use of the Danfoss VLT Control Panel LCP 21, model 132B0254. It covers product overview, installation, operation, maintenance, and troubleshooting. Please read this manual thoroughly before installing or operating the control panel.
2. Safety Information
Always observe general safety precautions when working with electrical equipment. Improper installation or operation can result in serious injury or equipment damage.
- Ensure power is disconnected before installation or maintenance.
- Only qualified personnel should perform installation and service.
- Protect the control panel from moisture, dust, and extreme temperatures.
- Do not attempt to modify the control panel.
3. Product Overview
The Danfoss VLT Control Panel LCP 21 is designed for intuitive control and monitoring of VLT drives. It features a clear display and a user-friendly interface for quick access to drive parameters and status information.

Figure 1: Danfoss VLT Control Panel LCP 21. The image displays the front of the Danfoss VLT Control Panel LCP 21. It features a rectangular LCD screen at the top, below which is the 'Danfoss' logo. The control interface includes three main menu options: 'Status', 'Quick Menu', and 'Main Menu', accessible via a 'Menu' button on the left. A central circular navigation pad with an 'OK' button is surrounded by directional arrows (up, down, left, right) and a 'Back' button. To the left of the navigation pad are status indicators for 'On', 'Warn.', and 'Alarm'. At the bottom, there are three operational mode buttons: 'Hand On', 'Off Reset', and 'Auto On'.
Key Components:
- LCD Display: Shows operational data, menus, and status messages.
- Menu Button: Accesses the main menu structure.
- Navigation Pad (Up, Down, Left, Right, OK, Back): Used for navigating menus, adjusting parameters, and confirming selections.
- Status Indicators (On, Warn., Alarm): LEDs that provide visual feedback on the drive's operational state.
- Operational Mode Buttons (Hand On, Off Reset, Auto On): Control the drive's operating mode.
4. Setup
Follow these general steps for installing the LCP 21 control panel. Refer to your specific VLT drive manual for detailed installation instructions.
- Mounting: Securely mount the LCP 21 onto the VLT drive or a suitable panel using the designated mounting points.
- Connection: Connect the LCP 21 to the VLT drive's control panel port. Ensure the connection is firm and correct.
- Power On: Once securely mounted and connected, power on the VLT drive. The LCP 21 display should illuminate.
- Initial Configuration: The LCP 21 may prompt for initial language or basic settings. Follow the on-screen instructions.
5. Operating Instructions
The LCP 21 provides an intuitive interface for controlling and monitoring your VLT drive.
5.1. Navigating Menus
- Press the Menu button to access the main menu.
- Use the Up and Down arrow buttons to scroll through menu options.
- Press OK to select a menu item or confirm a parameter change.
- Use the Left and Right arrow buttons to navigate between sub-menus or adjust values.
- Press the Back button to return to the previous menu level.
5.2. Status Indicators
- On (Green LED): Indicates the drive is powered and operational.
- Warn. (Yellow LED): Indicates a warning condition that may require attention but does not stop the drive.
- Alarm (Red LED): Indicates a critical fault that has stopped the drive. Refer to the drive's manual for alarm codes.
5.3. Operational Modes
- Hand On: Activates manual control of the drive.
- Off Reset: Stops the drive and resets any active alarms.
- Auto On: Activates automatic control of the drive, typically via external signals.
6. Maintenance
The Danfoss VLT Control Panel LCP 21 requires minimal maintenance to ensure long-term reliability.
- Cleaning: Periodically clean the display and buttons with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Inspection: Regularly inspect the panel for any signs of physical damage or loose connections.
- Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges to prevent damage.
7. Troubleshooting
If you encounter issues with your LCP 21, consider the following common troubleshooting steps:
- Display is blank: Check power supply to the VLT drive and ensure the LCP 21 is securely connected.
- Buttons unresponsive: Ensure the panel is not in a locked state. Try cycling power to the drive.
- Alarm LED is on: Note the alarm code displayed on the VLT drive (if applicable) and consult the VLT drive's manual for specific alarm definitions and corrective actions. Press 'Off Reset' to clear non-critical alarms.
- Incorrect readings: Verify parameter settings in the VLT drive and ensure sensors are correctly calibrated and connected.
For persistent issues, contact Danfoss technical support.
8. Specifications
The following specifications apply to the Danfoss VLT Control Panel LCP 21 (Model 132B0254):
| Feature | Specification |
|---|---|
| Model Number | 132B0254 |
| Brand | Danfoss |
| Manufacturer | Danfoss Drives |
| Package Dimensions | 4.13 x 2.95 x 1.18 inches |
| Item Weight | 1.92 ounces |
| Special Feature | Ergonomic |
| Max Number of Supported Devices | 1 |
| Connectivity Technology | Infrared |
| Number of Buttons | 2 |
9. Warranty and Support
The Danfoss VLT Control Panel LCP 21 is covered by a manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation provided with your product or visit the official Danfoss website.
For technical assistance, troubleshooting beyond this manual, or to inquire about service, please contact Danfoss customer support through their official channels. Ensure you have your product model number (132B0254) and any relevant serial numbers ready when contacting support.







