KNX CHROMOFLEX Pro User manual

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®
Pro KNX V2
ENGLISH
Instruction manual
CHROMOFLEX
®
Pro
KNX V2
Item no. 66000374 CV – 4-channel
Please read this manual carefully and keep it in a safe place!
1. Introduction:
The CHROMOFLEX
®
Pro KNX has been developed to control voltage controlled LEDs for up to 4 output
channels via KNX. The number of output channels, the type of dimming curve and many other settings can be easily
set using ETS-software.
2. Usage:
The modules were designed for indoor use in dry places. The LEDs might also be used in wet environments or
outdoors, if suited for that purpose. For outdoor use, be sure to use the right protection methods (IP67).
The modules must be operated with a power supply that is matched to the used LEDs! Non-LED loads (especially
inductive loads like motors, transformers, coils, etc.) might damage or destroy the module.
If any of the before mentioned points is not observed short circuit or electric shock might occur.
The CHROMOFLEX
®
Pro KNX was developed according to KNX Guidelines. KNX is a standardized digital
communications interface in the field of building automation.
3. Technical Data version CV (excerpt):
Operating voltage: 10V to 48V DC
Protection class: III
Output current 4 channels: max. 2.2A / channel
Dimensions (L/W/H): 180 / 52 / 22 mm
Current consumption of one unit (without LED): about 5 - 20mA
Ambient temperature: 0°C - max. +50°C
(in dry conditions only with sufficient air circulation for heat dissipation, non-condensing)
IP Protection: IP20
Manufacturer: Josef Barthelme GmbH & Co. KG
4. Safety Instructions
The modules might produce some heat. Care must be taken to provide unrestricted air ventilation. The device
should not be warmer than 80°C in standard operation at max. load.
The unit is equipped with a limited protection against reverse polarity. Connecting the power in reverse polarity can
destroy the module, even if connected for a short time only.
When not used as directed, reversed polarity, modification of the device, for property damage or personal injury
caused by improper use or failure to observe the safety instructions, we assume no liability and the warranty
becomes void completely.
If the LEDs are provided in wet areas (e.g. swimming pools, sauna, ...) pay particular attention to the rules regarding
the power supply.
The installation of the product must be performed by a qualified electrician who is familiar with the applicable
regulations (e.g. DIN, VDE, EN).
This product is not a toy, keep away from children! LEDs can get quite hot. We strongly recommend ensuring
maximum operating temperature is not exceeded, because this might reduce the expected life time of the LEDs
significantly.
WARNING 1: LED light may have very high intensity even when dimmed. Particularly in connection with optics also
weak LEDs may be very dangerous. Staring into LEDs may cause irreparable damage to the eye's retina. Use
diffusers to spread the intensity!
WARNING 2: Please be aware that LED light may cause side effects. This light changes intensity very fast!
Changing light may affect the perception and is also known to trigger epileptic seizures in persons who are
photosensitive.
5. Installation
The electrical connection must only be carried out by a qualified electrician who is familiar with the
applicable regulations!
Caution: Turn off the power supply or the connection lead before doing any works
Assembly site
Make sure that the unit is mounted on a stable, plain, non-tilting base. In operation the unit might produce heat.
Care must be taken to provide unrestricted air ventilation.

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®
Pro KNX V2
Dimensions/Mounting holes
6. Connection
Please note that the LEDs have to be connected in a de-energised state of the dimmer!
Notes on the selection of the power supply:
Important: The power supply must have appropriate pulse load. Unstabilized or too weak power supplies may lead
to unwanted flickering effects in the color changes.
Important: The module must be operated with a power supply, that is suitable for the used LEDs! Improper power
supplies may lead to malfunctions, unwanted flickering effects, destruction of LEDs, destruction of electronics or in
worst case to overheating. We strongly recommend using high-quality (stabilized) switching power supplies!
We strongly advise against the use of unstabilized cheap power supplies! Also special "LED" power supplies are
usually unsuitable as they may already contain control electronics for constant current, which may not be compatible
with control devices as the CHROMOFLEX
®
Pro .
We always recommend switching power supplies in power supply technology! Suitable power supplies are available
from us.
One power supply can be used for several units in parallel, if the maximum output power of the supply is observed.
For wiring cables with a cross section of max. 2.5mm² can be used.
The modules should be provided with min. 10 Volts; the maximum voltage of the CHROMOFLEX
®
Pro KNX
is 48 Volts.
Fig. 2
6.1
CHROMOFLEX
®
Pro KNX CV
„CV“ is an abbreviation for constant voltage.
This model does not have any internal current regulator. Supply voltage is passed through and the voltage of the
power supply must match the voltage of the LED stripe. So if the LED strip requires 12 volts, this must also be the
output voltage of the power supply.
Note: LED stripes of 10 Volts, 12 Volts and 24 Volts are offered on the market. Depending on the cable length the
used LEDs might need very high currents.
Notes / additions
At the output channels please
- avoid reverse polarity
- note correct voltage
- ensure that the power per output channel
is not exceeded
- never connect current-controlled LEDs (CC)

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®
Pro KNX V2
Note: We deliver flexible stripes on reels in length of max. 6 metres, with a power consumption of about 1 Amperes
at 24 Volts per color. The „ CHROMOFLEX
®
Pro KNX CV“ 4-channel version is able to control up to 2.2 amperes
per channel (Fig. 3). It is possible to use 1-channel with 8.8 amperes, but it is very important to bridge all channel
outputs (Fig. 4).
For the use of "Channel 1 Tunable White" the channels 1 and 2 are bundled together for a color
temperature, as well as the channels 3 and 4 for the second color temperature.
Fig. 3
Fig. 4
7. Operation
Please operate this unit only, when it is working properly. In case of an error, switch off the unit immediately. Do not
operate the unit, until the unit was verified electronically by a qualified electrician.
A case of error is:
- visible signs of damage on the unit
- the unit is not working properly
- fume rising or crackling sounds from the unit
- visible signs of overheating
Maintenance and service which require access to live components inside the unit must be carried out by an
authorized electrician.
Warning: Danger of life! Risk of electric shock!
How to avoid malfunctions or fire risk:
- Do not affect air circulation by covering the unit.
- Do not attach anything to the unit e.g. decoration items etc.
Do not let your children play unattended with electrical equipment. Children cannot always perceive possible
dangers correctly.
7.1 Start-up
Connect LEDs and power supply as shown in fig. 2 and 3. Make sure that LED-stripes and correct power supply are
connected to CHROMOFLEX
®
Pro KNX CV.
For programming you need the newest version of ETS software. Needed files for the ETS
software can be found at our webpage “www.barthelme.eu”. Additionally you can find the
explanation of all parameters and group objects on this webpage.

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®
Pro KNX V2
8. Contents and accessories
Every CHROMOFLEX
®
Pro DALI unit is shipped with this manual. The instructions are an integral part of the
equipment to which they relate and must be handed to the user.
Important note: Complete manuals for any CHROMOFLEX
®
can be downloaded at www.barthelme.eu . Please
look for updates before installation.
9. Contact
Josef Barthelme GmbH & Co. KG
Oedenberger Str. 149
D-90491 Nürnberg, Germany
Tel: [phone]
Mail [e-mail]
Subject to technical changes and errors