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CONTENTS

Technical data sheet: S000094312EN-1 

Updated: 

Created: 20/09/2017

Cat. No(s): 0 026 54

KNX modular dimmer 2 x 300 W

  1. USE

The KNX modular dimmer Cat No. 0 026 54 is used for controlling 

dimming on two circuits up to 300 W per channel.

It is compatible with incandescent bulbs, high and low voltage halogen 

lamps and dimmable LEDs.

The associated load (R, L or C type) is identified automatically, or 

manually by the user.

To check that the wiring is correct, each channel can be controlled 

locally on the controller by means of push-buttons and LEDs on the 

front panel.

The device operating parameters can be configured with ETS and 

modified using NFC technology via the Legrand Close Up app.
The main application program functions are as follows:

• Configuration of dimming speed

• Definition of min./max. dimming thresholds to ensure consistent 

dimming

• Configuration of the scene control function (8 scenes max. per 

channel)

• Definition of a hold threshold and a time delay

• Selection of the load state after a power failure

• Configuration of error message objects

• Configuration of time delay indicator objects

  2. TECHNICAL CHARACTERISTICS

2.1 Electrical characteristics 

• Voltage: 240V~

• Frequency: 50/60 Hz 

• Terminal type: screw 

• Terminal capacity: 1 x 2.5 mm2 or 2 x 1.5 mm2

• BUS consumption: 3 mA

• Table of loads which can be controlled (per channel)

R

(trailing or 

leading mode)

L

(leading mode)

Dimmable

Dimmable

Dimmable 

LED

 12 VAC

240 V~

Max.

300 W

200 VA 

or 30 

200 VA 

or 15 

300 VA

100 W 

or 8 

Min.

1 W

1 VA

1 VA

1 VA

1 W

T

(trailing mode)

L

(leading mode)

Dimmable

Dimmable

 Dimmable LED

 12 VAC

240 V~

Max. 200 VA or 30 

200 VA or 10 

75 W or 8 

Min.

1 VA

1 VA

1 W

1 - Halogen lamp

2 - ELV halogen lamp and LED lamp with separate electronic or 

ferromagnetic ballast

3 - Fluorescent tubes with dimmable separate electronic ballast

4 - Compact fluorescent bulbs with dimmable built-in electronic ballast

5 - ELV halogen lamp and LED lamp with dimmable separate electronic 

ballast

6 - LED bulb with dimmable built-in electronic ballast

(*)

  Only use transformers designed to operate with electronic switches.

(**)

  Only use dimmable LEDs with this logo 

 on the packaging.

   2.  TECHNICAL CHARACTERISTICS

 

(continued)

2.2 Mechanical characteristics

• IP 20 

• Number of modules: 4

• Weight: 170 g

2.3 Climate characteristics

• Operating temperature: -5°C to +45°C

2.4 NFC characteristics

• 13.56 MHz - ≤ 20 dBμA

Important:

Take the transformer losses into account when calculating the 

power. The transformers must be loaded at more than 60% of their 

power.

  3. DIMENSIONS

71.5 mm

67 mm

83 mm

90 mm

  4. CONNECTION

4.1 Single-phase wiring

300 W 

max.

300 W 

max.

29 V

 

=

Important:

Install a common circuit breaker for both channels since the neutrals 

are interconnected in the device.

/

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(*)

(**)

1

5

6

2

3

4

Summary of Contents for 0 026 54

Page 1: ...he device 3 5 1 1 Description of push buttons 3 5 1 2 Description of LED flashing 3 5 2 Load teach phase 3 5 3 Manual mode 4 5 4 NFC settings 4 5 4 1 Channel configuration 5 5 4 2 Load settings 5 5 4...

Page 2: ...m2 or 2 x 1 5 mm2 BUS consumption 3 mA Table of loads which can be controlled per channel R trailing or leading mode L leading mode Dimmable Dimmable Dimmable LED 12 VAC 240 V Max 300W 200VA or 30 200...

Page 3: ...ntinued 5 1 2 Description of LED flashing Each push button press is associated with a flash and an LED colour The various flashing types and LEDs are detailed in the table below LED Colour Behaviour I...

Page 4: ...1 and 2 can then be switched ON OFF with a short press on the up and down buttons of each channel A long press on these buttons will brighten or dim the light 2 s 2 s 2 s ON OFF 2 s 2 1 To exit manua...

Page 5: ...300 VA max Compact fluorescent 100 W max LED 75 W max LED with noise reduction 40 W max Maximum level 20 to 100 Minimum level 2 to 85 5 4 3 Scene settings This is used to configure the different scene...

Page 6: ...trol unit receives a dimming command OFF time 2 s 1 s 1 H Time taken to go from 100 to 0 when the control unit receives an OFF command Level time 1 s 1 s 1 H Time taken to go from 0 to 100 when the co...

Page 7: ...Automatic by default automatic load recognition Forced if forced mode is chosen it opens the possibility of choosing other options Load commutation Load switching Trailing Edge by default Leading Edge...

Page 8: ...de leading or trailing mode etc 1 Check whether the load is dimmable 2 Check that there is not a mixture of load types The load does not react correctly to the dimming request Inappropriate setting 1...

Page 9: ...EDbulb MV 10W 806lm 2015 1 to 4 Leading mode LED with noise reduction 40 W OK Set the minimum light level if necessary The Dimmer without memory function is not recommended due to the lamp technology...

Page 10: ...5 1 to 8 Leading or trailing mode Transformer LED Not OK 1 to 5 bulbs Leading mode LED with noise reduction 40 W Set the minimum light level if necessary 6 to 8 bulbs Leading mode LED 75 W Set the min...

Page 11: ...and 100 If the transformer makes a buzzing noise switch to trailing mode 1 to 4 max LEGRAND TMDO 50 45 W FERRO Leading mode Transformer OK Set the minimum light level if necessary Dimming range can b...

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