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FAQ - Frequently Asked Questions


Q. Can I operate more than one control simultaneously?
A. The Velbus domotics system only sends a command when a pushbutton is being pressed or released. Example: The bus is empty when a lighting point is being dimmed so simultaneous commands will not pose any problem.
Q. Dimming with Velbus
A. An overview of the most common options for dimming with Velbus. Read more ... (PDF)
Q. How does Velbus handle daylight saving time?
A. Only if you have a VMBHIS Home Center server in your installation will daylight saving time be automatically adjusted.
In case no VMBHIS is present in the installation, the time has to be adjusted manually. This can be done on one of the modules with a display (eg. the VMBGPOD), or by using the clock sync function in Velbuslink.
Q. Where can I view a demo of the Velbus system?
A. Please consult the Points of Sale page, those who have a demonstration panel are marked with an icon.
Q. The LEDs on my module(s) are flashing, what does this mean?
A. When the LEDs on a module are blinking, this can be for the following reasons:
- continuous, regular blinking (slow or fast) means a timer is running
- when the LEDs flash a few times, than pause, then flash again a few times, this means an error has occurred:
• 2 times flashing, pause, 2 times flashing, etc: communication error
• 3 times flashing, pause, 3 times flashing, etc: power supply voltage too low
• 4 times flashing, pause, 4 times flashing, etc: power supply voltage too high
• 5 times flashing, pause, 5 times flashing, etc: temperature alarm (only on certain modules, eg. dimmers)
Q. Switches instead of push buttons
A. Velbus is designed to be used with push buttons. Switches can be used, but this involves some extra programming, and comes with a few limitations. Eg. dimming with switches is not possible (apart from setting to a fixed value). We advise strongly to use push buttons. However, if this is impossible, switches can be used as explained here: Read more ... (PDF)
Q. What happens to the date and time after a power blackout?
A. The programs that are written in the modules, are not affected by a power blackout. The date and time can be recovered automatically using the VMBHIS Home Center server or a VMBLCDWB pushbutton and timer module. Read more ... (PDF)
Q. Controlling your Velbus installation via Ipod Touch, iPad, iPhone or Windows
A. The VMBHIS Home Center server is thé solution for controlling Velbus by means of iPhone, iPad, iPod Touch, smartphone, tablet and pc. The VMBHIS is fully plug-and-play en adds also other extras to your Velbus installation. For more information see the VMBHIS product page and homecenter.be, for prices see Velbus price list. Included in the price are the module, the software and one year free updates, after which the VMBHIS remains fully functional. Updates are only needed in case you want to incorporate newly developed functionalities, and can be bought at any time. The purchase will include again updates for a year and all previous updates.
Q. Which cable type do I use with my Velbus installation?
A. A UTP cable will be more than suitable for a regular home automation. Extensive installations (covering large distances >100m) will need EIB cables. This cable type has a larger wire gauge so the loss over larger distances will be negligible. We also recommend using a power voltage of minimum 14V, which is perfectly feasible when using a Velbus power supply.

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