Wiring Essentials

Good wiring decides whether a Loxone project runs reliably for years. Here you will find the basics of planning and the limits to keep in mind.

Proven recommendations from our Loxone experts, planned with Loxone products only. Not the only way, but a safe starting point.

01The right cable

The green Tree Cable is the standard and connects all Loxone products to the Miniserver. Only a few cases need a different or additional cable.

02Colour to colour

Coloured terminals show where each core goes: the green pair into the green terminal, the orange pair into the orange one, the coloured core on the left, the white one on the right. The Tree Cable has two twisted pairs with 0.8 mm (0.5 mm²): green/white for the data line, orange/white for 24 V to push-buttons, sensors and devices with low power consumption. In addition, there are two 1.5 mm² cores in orange/white for devices with higher power consumption such as LED Spots or dimmers.

The rule: colour to colour, coloured on the left, white on the right, on every Loxone product. That makes it easy to hand the installation over to colleagues or subcontractors.

03One Tree Cable per room

Rule of thumb: one Tree Cable per room, back to the distribution board. All Loxone products in the room connect to that cable.

• Combine small rooms. A WC or storage room shares a cable with another room.
• Split large rooms. An open-plan living area gets two or more cables.
• Treat the heating manifold as a room of its own, with its own Tree Cable.
• Do not fill to the limit. Leave a reserve for later extensions.

The 500 m apply to the data line. For high-power loads such as Tree lights or dimmers, the length is often much shorter because of voltage drop.

04Audio Cable

The purple Loxone Audio Cable follows the same colour logic, but with only two pairs: green/white (0.8 mm) for data and orange/white (1.5 mm²) for the 24 V supply. Speakers need more power, so there is no thin supply pair.

• One Audio Cable per room or audio zone.
• No more than three speakers per Audio Cable.
• Plan the audio zones first, then speakers and cables.
• Master/Client logic: one Master speaker per zone, plus Client speakers where needed.

More on this: in the audio documentation and our audio training courses.

05Topology: anything goes, except a ring

Tree allows line, star, bus with branches or tree, also mixed. The only thing you must never do is close a ring: it causes communication errors and can stop Tree devices from being found. We recommend the tree topology.

Tree

recommended

Line

allowed

Star

allowed

Bus with branches

allowed

Ring

never

06Example: one floor, step by step

All cables start at the distribution board with the Miniserver in the utility room. Larger projects may have several distribution boards or Miniservers.

Step 1: Tree Cables

Roughly one Tree Cable per room. Bathroom and WC share one, the heating manifold gets its own.

Step 2: Audio zones

One audio zone for kitchen and living room, one for bathroom and WC, one per bedroom. Each zone has a Master speaker (M), plus Client speakers (C) where needed.

07Why Loxone cables and products

With Loxone products and cables, you get to a smart home in the safest and easiest way.

• Less cabling. One cable per room instead of one per device.
• Flexible. Later changes are easy, even after years.
• Easy to install. The colour logic makes it easy to hand over to colleagues or subcontractors.

Before installationChecklist

• ☐  Right cable planned for every product?
• ☐  No ring anywhere in the Tree?
• ☐  Common ground (GND) connected, also with several power supplies?
• ☐  Cable limits and voltage drop respected, reserve planned?
• ☐  Power supply and backup planned?
• ☐  Different voltages properly separated?

A few minutes of planning save hours later, because most “software problems” turn out to be wiring problems.