Theben Dimming Actuator - MIX2
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Product Information
Full details
This Theben DME 2 T KNX dimming actuator is for users of KNX bus systems looking to efficiently control lighting. Its key benefit is providing versatile dimming for various lamp types and the ability to expand up to 6 channels. A potential caveat is that advanced setup requires KNX bus system knowledge.
All features
| Series | MIX2 |
|---|---|
| Model Part Number | 4930275 |
| Brand | Theben |
Extended Product Information
FAQs
What types of loads can this dimmer control?
It supports dimmable LED lamps, incandescent lamps, low-voltage halogen lamps (with compatible transformers), high-voltage halogen lamps, and dimmable energy-saving lamps. It is also suitable for R, L, and C loads.
Can I increase the number of dimming channels beyond two?
Yes, you can connect up to two extension modules (MIX or MIX2) to the base module to expand the system to a maximum of 6 channels.
How do I perform manual operation?
Manual operation can be performed directly on the device using the integrated buttons, even without a KNX bus connection, provided the unit is powered.
What is the maximum power output per channel?
The dimming output is 400W/VA per channel. For higher power requirements, you can use parallel operation (up to 800W/VA) or add dimmboosters for even greater capacity.
Is it possible to replace the actuator without reprogramming the entire KNX system?
Yes, the KNX bus module is removable. You can swap the device and replace the KNX bus module independently of each other, allowing for device replacement without reprogramming the bus.
What is the IP rating of this device?
The International Protection (IP) rating is IP20, meaning it is protected against solid objects larger than 12.5mm and dripping water when tilted up to 15 degrees from the vertical.
Does the device require a specific frequency for AC input?
The device operates with an AC input voltage of 230V and an input frequency of 50 Hz.
Troubleshooting
Actuator not responding to KNX commands
Verify KNX bus voltage is present and the bus module is correctly connected. Check the programming and group addresses in the ETS software. Ensure the device is powered on.
Lights flicker or do not dim smoothly
Confirm the connected lamps are dimmable and compatible with the actuator. Try disabling automatic load detection and setting the load type manually. Check if the load is within the specified wattage range. Consider using a dimmbooster for higher power loads.
Device shows no power indication
Check the mains voltage supply to the actuator. Ensure all wiring connections are secure and correct. Verify the circuit breaker or fuse protecting the circuit is active.
Manual operation is not working
Ensure the device is powered and the KNX bus module is correctly seated (if local control depends on it). Verify that manual operation hasn't been disabled via KNX programming.
Pros and Cons
Pros
- Highly versatile with support for a wide range of lighting types.
- Scalable design allows for future expansion of lighting control channels.
- Local manual control simplifies initial setup and basic operation.
- Energy-efficient operation contributes to reduced power consumption.
- Modular design with a removable bus module for easy maintenance and upgrades.
Cons
- Requires a KNX bus system for full functionality.
- Initial setup and programming can be complex for users unfamiliar with KNX.
- Expansion modules and dimmboosters are sold separately.
- Standby power consumption of 0.6W, while low, is a consideration for energy-critical applications.
Setup, Compatibility & Care
Setup:
- Mounting: Securely mount the actuator on a DIN rail within an electrical enclosure using its 4-module width.
- Connections: Connect the mains voltage (230V AC, 50Hz) and the load wiring to the respective terminals.
- KNX Bus Connection: Connect the removable KNX bus module to the actuator and then to the KNX bus.
- Programming: Program the device using the KNX engineering software to define its functions, group addresses, and operating parameters.
Compatibility:
- System: Designed exclusively for KNX bus systems.
- Loads: Compatible with dimmable LED, incandescent, low-voltage halogen (with electronic or toroidal transformers), high-voltage halogen, and energy-saving lamps.
- Extension Modules: Supports up to two MIX or MIX2 extension modules for increased channel count.
- Dimmboosters: Compatible with Theben dimmboosters (e.g., "DMB 1 T KNX") for increased output power.
Care:
- Ensure the device is de-energized before performing any maintenance.
- Clean the exterior with a dry or slightly damp cloth. Avoid using solvents or abrasive cleaners.
- Periodically check wiring connections for tightness and integrity.
- Ensure adequate ventilation around the device within the enclosure to prevent overheating.