1. Producte acabatview
The VEMER AST2 VE343000 is an advanced digital astronomical timer designed for precise control of lighting systems. It automatically manages switching operations between sunset and sunrise, adapting to your specific geographical location. This makes it an ideal solution for shop window lighting, illuminated signs, and other applications requiring automatic twilight-dependent control.

Figura 1: Frontal view of the VEMER AST2 VE343000 Digital Astronomical Timer.
Característiques principals:
- Astronomical time switch with night programming capabilities.
- Automatic programming: Switches 'On' at sunset and 'Off' at sunrise.
- Flexible programming options: Manual configuration via keypad or automatic setup using the NFC interface.
- Integrated backup battery ensures settings are retained during power outages.
- Free dedicated app available for smartphones and tablets for convenient programming.
- Backlit LCD screen displays current date, time, and relay status for easy monitoring.
- Alimentació: 230V.
2. Instal·lació i configuració inicial
2.1 Muntatge
The VEMER AST2 VE343000 is designed for DIN rail mounting. Ensure the device is securely clipped onto a standard DIN rail within an electrical enclosure. Proper ventilation should be maintained around the device.
2.2 Connexió d'alimentació
Connect the timer to a 230V power supply using the screw terminals provided. Ensure all connections are secure and comply with local electrical safety regulations. It is recommended that installation be performed by a qualified electrician.
2.3 Configuració inicial
Upon initial power-up, the device may require basic time and location settings. These can be configured manually using the device's keypad or more conveniently via the NFC app on a smartphone or tablet. Refer to the 'Operation and Programming' section for detailed instructions.
3. Funcionament i programació
3.1 Astronomical Function
The primary function of the AST2 VE343000 is its astronomical programming. Once your geographical location is set, the timer automatically calculates sunset and sunrise times daily, adjusting for seasonal changes. This allows for precise 'On at sunset - Off at sunrise' control without manual adjustments.
3.2 Programació manual
The device can be programmed directly using the buttons on its front panel. The backlit LCD screen guides you through setting the date, time, and specific switching programs. Consult the detailed German instruction manual for step-by-step manual programming procedures.

Figura 2: Examples of programming diagrams for the timer, illustrating various ON/OFF cycles relative to sunset and sunrise.
3.3 NFC App Programming
For ease of use, download the free VEMER memo app to your smartphone or tablet. The device's NFC interface allows you to create, transfer, and acquire programs directly from your mobile device. This method simplifies complex programming tasks and allows for quick adjustments.

Figure 3: The VEMER memo app interface on a smartphone, showing options for program creation and settings.
3.4 Funció de bloqueig de tecles
The timer includes a password-protected 'key lock' function. This feature is particularly useful in public installations to prevent unauthorized personnel from making changes to the programmed settings. Activate this function through the device menu or the NFC app.
4. Manteniment
4.1 Substitució de la bateria de reserva
The VEMER AST2 VE343000 is equipped with a backup battery to preserve settings during power interruptions. If the display shows a low battery indicator or settings are lost after a power outage, the backup battery may need replacement. The battery compartment is accessible by removing the device cover.

Figura 4: posterior view of the timer, highlighting the accessible backup battery compartment.
Per substituir la bateria:
- Ensure the device is disconnected from the main power supply.
- Carefully remove the device cover to access the battery compartment.
- Replace the old battery with a new, compatible backup battery (e.g., CR2032, as indicated on the battery itself).
- Securely reattach the device cover.
- Torneu a connectar el dispositiu a la font d'alimentació.
5. Solució De Problemes
If you encounter issues with your VEMER AST2 VE343000, consider the following general troubleshooting steps:
- Sense pantalla/alimentació: Check the main power supply to the device. Ensure all wiring connections are secure.
- Incorrect Switching Times: Verify that the geographical location and current time are correctly set. Ensure the astronomical function is enabled if desired.
- Settings Not Retained: The backup battery may be depleted. Refer to Section 4.1 for replacement instructions.
- Problemes de connectivitat de l'aplicació: Ensure NFC is enabled on your smartphone/tablet and that the device is placed correctly for NFC communication.
- Canvis no autoritzats: If settings are being altered without permission, ensure the 'key lock' function is activated and secured with a strong password.
For more detailed troubleshooting or specific error codes, please refer to the comprehensive instruction manual provided with the product, which is available in German.
6. Especificacions tècniques
| Especificació | Valor |
|---|---|
| Marca | VEMER |
| Número de model | VE343000 |
| Product Type Name | Digital Timer with Astronomical Programming, DIN Rail Mount, Two Channels |
| Mode de funcionament | Automàtic |
| Font d'alimentació | 230 V |
| Tipus de circuit | 2 vies |
| Tipus de muntatge | Muntatge sobre carril DIN |
| Mètode de control | Via App / Manual |
| Protocol de comunicació | NFC |
| Mostra | LCD retroil·luminat |
| Tipus de connexió | Normalment obert |
| Tipus de connector | Clamp |
| Tipus de canvi | TRIAC |
| Terminal | Cargol |
| Material | Kunststof (Plastic) |
| Material de contacte | coure |
| Color | Blanc |
| Dimensions de l'article (LxWxH) | 36 x 65 x 90 mm |
| Pes de l'article | 150 grams |
| Compliment | CE, RoHS |
| GTIN | 08007951121312 |
7. Garantia i Suport
For warranty information, technical support, or service inquiries, please contact VEMER customer service or your authorized dealer. Detailed contact information can typically be found on the manufacturer's official weblloc web o dins de l'embalatge del producte.
Please note that the comprehensive instruction manual is available in German. It contains detailed information on installation, programming, and advanced features not covered in this summary. Always refer to the official manual for complete and up-to-date information.