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NEB Extender

This document will show you how to connect your NEB Extender the best way.

So, what can it do for me?
The NEB Extender (Neets Expansion Bus Extender) is a universal extension for the newest generation of Neets control systems.
By adding an NEB Extender to the NEB bus, you can extend the cable length from 20 cm up-to 40
meters.
The flexibility of the room design is increased, because the NEB keyboard can be placed at the
entrance/door and the control system can be placed below the screen.

Requirement

  • You must use a Neets Control system that can has an NEB bus.
  • 1-3 NEB Extenders (310-0005) Sold in pairs.
  • Shielded twisted pair cable with minimum of 3 pairs. (See recommendations below) 

 

Limitations

  • Locations with high level of Electro Magnetic Interference (EMI) can cause the NEB bus to be
    unusable and reduce the max cable length.

How-to use NEB Extenders
This section will take you through the steps on how to install the NEB extenders and make the best cabling.

Connecting the NEB Extenders.
The NEB Bus normally has a cable length of up-to 20 cm, so if you need longer distance then you need an NEB Extender at each end of the cable that is longer than 20 cm.
Any cable between NEB extenders in a single setup may not exceed a combined length of 40 meters.
NB: Some of the Neets Control systems has a build in NEB extender (ex. DelTa). Please check the
technical specification on the control system you are using.

Below is different ways you can connect NEB extender.

 

Control unit without build in NEB extender, E.g. SieRRa and EcHo 

Above is how to extend one NEB panel.


Above is great for two NEB panels that is on opposite sides of the control system.

 

Above is great for two NEB panels where one is even further away than the other is.

 

Above is great for two NEB panels placed side-by-side, but far from the control panel.

 

Above is great for two NEB panels where one is side-by-side the control panel, and the other is far away.

Control unit with build in NEB extender, e.g. TanGo, AlFa II and Delta

 


Above is how to extend one NEB panel.


Above is great for 2 NEB panels that is on opposite sides of the control system.


Above is great for 2 NEB panels where one is even further away than the other.


Above is great for two NEB panels placed side-by-side, but far from the control panel.

 

 

Selecting the right cable
We recommend that you use a good quality Cat5/Cat5e cable, of the type SF/UTP with a minimum core size of 24 AWG (Lower number is better, so use 20-24 AWG).

  • AWG: American wire gauge indicates the size of the conductor.
  • UTP: Unshielded Twisted Pair indicates that each pair is unshielded.
  • SF: Indicates that the cable has both a Braid and Foil screen. The braid is easier to fit in to the plug used for the NEB Extender, than using a cable with only foil (F/UTP).

Is there an alternative to CAT cable?
If you do not like working with CAT cable there are other options.
You can use other twisted pair cables with similar qualities as Cat5. However, avoid FTP cable, where single pairs are shielded, as this will increase the capacitance of the cable.
Example of cable: Alpha Wire, part number 6374

How to connect the cable to the NEB extender
The picture below show the right way to connect 2 NEB extender. Connecting the NEB extender in
another configuration will make the installation more sensitive to external noise.

Colors:

  • PWR: Brown and Brown/white
  • NDA: Green/white
  • NCL: Orange/white
  • GND: Green and Orange (Shield only connected at the control unit side)

NEB Extender connections:

  

 

Facing issues?

  • You can try a few things:Always use a Neets power supply to power the Neets control system.
  • Use a higher quality cable.
  • Shorten the cable if possible. Maybe test with a shorter cable.
  • Ask the customer if they have any other equipment that powers on/off, transmits/receives, or does other things that could cause Electro Magnetic Interference (EMI).
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