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VMBDMI - Single channel triac dimmer for resistive and inductive loads

1-channel 400W dimmer. Create an atmosphere which suits you best or let your lights dim slowly to avoid unexpected surprises. It is also possible to simulate a sunrise which makes waking up a lot more pleasant!

  • leading edge phase control
  • suitable for:
    • incandescent lamps
    • mains voltage halogen lighting
    • low voltage halogen lighting in combination with a conventional (wire wound) transformer
    • some types of 230V dimmable led lamps
  • soft on or off will prolong the lamp's life
  • thermal protection
  • protection at too inductive load (can be disabled for dimmable led lamps)
  • configuration: via PC
    • addressing: 250 possible addresses
    • operation modes: dimming - slow on/off - timer - multistep dimmer - moods ...
    • timer: 1s ... 3 days
    • dimspeed: 2s ... 23 hours
  • LED indicators for:
    • operation modes
    • error status
    • power voltage
    • data reception and forwarding through VELBUS
  • required mains voltage: 220-240V/50Hz
  • maximum load: 400W
  • dimming from 0 to 100% in 4 seconds
  • built-in non-resettable fuse
  • thermal protection:
    • > 80°C to 25% intensity
    • > 90°C to 0% intensity
  • power supply: 12...18Vdc
  • consumption: 30mA
  • dimensions: 90x36x58mm / 3.5x1.4x2.3"
  • width: 2 DIN modules


PDF-File short user manual for VMBDMI
Basic manual explaining the basic functions of the Velbus dimmer for inductive/resistive loads.
PDF-File extended user manual for VMBDMI
Extended manual that explain how to use all possibilities of the dimmer for inductive/resistive load


PDF-File Dimming with Velbus
Overview of the possibilities of dimming various types of lighting with Velbus
PDF-File Velbus Installation Guide, Part 1: Hardware and Cabling
Everything you need to know about the VELBUS hardware
PDF-File Velbus Installation Guide, Part 2: Programmation
How to program and configure VELBUS modules using the free software VELBUSLINK

Info Sheets

PDF-File VMBDMI protocol
Protocol information describing how to develop software that can communicate with this module
PDF-File Catalog
PDF-File Velbus Pricelist
Q. Light switched at 100% during the day and 25% at night
A. A light needs to be switched at full intensity during the day (07:00 - 23:00), but at night (23:00 - 07:00) at a dimvalue of 25%. How to program this in Velbuslink? Read more ... (PDF)
Q. How can I make a motion detector set a light to a certain dim value during a certain time?
A. A Velbus motion sensor needs to turn a light on at a certain dim value (eg. 50%) during a certain time (eg. 1 minute).
This can be done as follows:
- in the configuration of the Velbus motion sensor module, set the timeout of the motion output to 1s
- create an action "Set to percentage" with the motion output channel as initiator and the dimmer channel as subject. Set the dim percentage parameter (in our example 50%). This action has also a "duration" parameter. Set this to the desired on time (in our example 1 minute)