Legrand 412654 Digital Programmable Timer Switch for Outdoor Lighting

1. Introduction

This manual provides comprehensive instructions for the installation, operation, and programming of the Legrand 412654 AlphaRex³ D21 Digital Programmable Timer Switch. This modular device is designed for precise control of electrical loads, particularly outdoor lighting, with advanced features such as astronomical function and PC programming capabilities. Please read this manual carefully before installation and use to ensure safe and correct operation.

Figure 1: Front view of the Legrand 412654 Digital Programmable Timer Switch, showing the display and control buttons.

2. Safety Information

Always observe the following safety precautions to prevent personal injury or damage to the device:

• Installation and maintenance must be performed by a qualified electrician in accordance with national wiring regulations and local electrical codes.
• Ensure the main power supply is disconnected before commencing any installation or wiring work.
• Do not operate the device if it appears damaged.
• The device is designed for indoor installation within an electrical distribution board.
• The product conforms to VDE 0631 part 1 and part 2-7, EN 60730-1, and EN 60730-2-7 standards.

3. Setup and Installation

The Legrand 412654 timer switch is designed for quick and easy installation within a standard electrical distribution board.

3.1 Mounting

The device is a 2-module wide unit designed for DIN rail mounting. Securely clip it onto the DIN rail within your electrical panel.

3.2 Wiring

Follow the wiring diagram provided on the device and ensure correct connections for line (L), neutral (N), and the switched output. It is recommended to protect the timer with a 2A circuit breaker and the controlled appliance with a 16A circuit breaker.

• Input Voltage: 230 V AC, 50/60 Hz
• Output: 1 changeover contact, 16A, 250V~

Figure 2: Side view illustrating wiring terminals and product identification label.

3.3 Initial Power-Up

Upon initial power-up or after a prolonged power outage, the display may show "NO MAINS" or require initial time and date setting. The device has a 5-year power reserve for maintaining settings during power interruptions.

Figure 3: Display indicating "NO MAINS" when power is not supplied or during initial setup.

4. Operating Instructions

The Legrand 412654 offers various operating modes and programming options for flexible control.

4.1 Basic Navigation and Settings

Use the buttons below the display to navigate menus and adjust settings:

• Menu/Escape Button: Typically represented by a symbol (e.g., square or 'M'). Used to enter menus or go back.
• Minus (-) Button: Decreases values or navigates backward.
• Plus (+) Button: Increases values or navigates forward.
• OK Button: Confirms selections or enters sub-menus.

The display is backlit for improved visibility.

4.2 Programming Modes

The device supports up to 56 switching programs and various advanced functions:

• Weekly Timer: Program specific ON/OFF times for each day of the week.
• Astronomical Function: Automatically adjusts ON/OFF times based on sunrise and sunset, combinable with weekly programs. This feature eliminates the need for a separate light sensor.
• Holiday Program: Set specific periods during which normal programming is suspended.
• Random Program: Introduces slight variations to switching times for security purposes.
• Manual Override: Temporary or permanent manual ON/OFF control.
• 1-Hour Test: Activates the output for a 1-hour test period.

4.3 Advanced Features

• PIN Code Lock: Protects programming from unauthorized changes.
• Operating Hours Counter: Tracks the total operating time of the connected load.
• Automatic Summer/Winter Time Change: The device automatically adjusts for daylight saving time.
• PC Programming: Programs can be created on a PC using AlphaSoft software and transferred to the device via a PC adapter (Legrand 412873) and data key (Legrand 412872).
• Shortest Switching Time: 1 second.
• Zero-Crossing Switching: Extends the life of the relay contacts and connected loads.

5. Maintenance

The Legrand 412654 timer switch is designed for long-term, maintenance-free operation.

• Cleaning: To clean the device, gently wipe the exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Power Reserve: The integrated battery provides a 5-year power reserve for settings and timekeeping during power outages. No user intervention is required for this feature.
• Component Replacement: There are no user-serviceable parts inside the device. In case of malfunction, contact qualified personnel.

6. Troubleshooting

If you encounter issues with your Legrand 412654 timer switch, refer to the following common problems and solutions:

• Device Display is Blank:
  • Check if the main power supply to the distribution board is active.
  • Verify the circuit breaker protecting the timer (recommended 2A) is ON.
  • Ensure wiring connections (L and N) are secure and correct.
• Programs Not Executing:
  • Check the current operating mode (e.g., ensure it's not in manual override or holiday mode).
  • Verify the time and date settings are correct.
  • Ensure the program steps are correctly entered and activated.
  • Check for any active PIN code lock preventing changes.
• Output Not Switching:
  • Confirm the connected load is functioning correctly.
  • Check the circuit breaker protecting the load (recommended 16A).
  • Ensure the timer's output terminals are correctly wired to the load.
• "NO MAINS" Message on Display:
  • This indicates no main power supply. Check the power to the device as described above. The internal power reserve will maintain settings.

If the problem persists after following these steps, contact a qualified electrician or Legrand technical support.

7. Specifications

8. Warranty and Support

Legrand products are manufactured to high-quality standards. This product comes with a warranty as per local regulations. Spare parts availability is guaranteed for 5 years.

For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact your local Legrand distributor or visit the official Legrand website for support contact information.

Always provide the model number (412654) and a detailed description of the issue when seeking support.