Dimmax 420SLR Instructions Download Page 3

Dimmax 420SLR – Instructions

Prerequisites : 

Please thoroughly read this manual before installation and start-up. This manual has to

be provided to the user .

The installation of this item must be properly done by a competent person in accordance to all
existing norms.

Description: 

The

 

Dimmax 420SLR is a 420W solid state & silent electronic light dimmer for resistive (0

to 420W), capacitive (0 to 200VA) and inductive (0 to 380VA) lighting systems. It features an optimized
mode to handle LEDs (up to 200W). It has been designed to be installed on DIN rails, inside an
electrical cabinet.
It is operated with : 

- 1 red indicator to report status or errors
- 1 operation mode manual selector
- 1 minimum start level manual selector
- 1 (or more) external pushbuttons to start, stop and adjust dimming effect

Nominal conditions : 230V AC +/- 15%, 50 Hz, T ambiant : from -10°C to 40°C

Foreword:

Today's new lighting systems include a lot of embedded electronics in LED lamps, e-transformers for
12V halogens or e-converters for LEDs. The DimMax 380SLX is designed to offer maximum flexibility
for all. Inductive loads are automatically recognized and "leading edge" (mode 2) operated. For the
others, the user can select between 4 classical or proprietary optimized dimming modes, to allow
permanent compatibility with the constantly improving lighting systems. For resistive and capacitive
loads, the user can try all of them at NO RISK, the unit will always remain protected:

- if selected mode generates too much losses, the unit enables its overtemperature protection
- if selected mode generates too high current pulses, the unit enables its overcurrent

protection

- best option will be the one not enabling any protection: a 10 minutes test at a 70% dimming rate will insure that the right
  mode is selected.

The Dimmax 420SLR is designed for lighting systems. Other loads (e.a. electrical engines) are forbidden. Consult us BEFORE such
use. Among lighting systems you may have :

Resistive (R)

: 230V classical light bulbs or halogens. These are ALWAYS DIMMABLE

Inductive (L)

: 230V ferromagnetic transformers for 12V halogens. These are ALWAYS DIMMABLE. Always select a 

good quality transformer with safety fuses on BOTH primary and secondary sides. Halogen load must be at
least of 80% of the nominal power of the transformer. NEVER let the secondary winding open.

Capacitive(C)

: 230V electronic modules (such as e-transformers for 12V halogens, or e-converters included in a LED 

lighting system). These are not always dimmable, CHECK FIRST, ONLY DIMMABLE ones are ALLOWED

Capacitive(C)

:

 

230V Leds. These are not always dimmable, TEST BEFORE INSTALLING.

 

       We strongly recommend to read the "Important note about maximum LED power" on next page

ALL Leds or electronic modules connected to the same DimMax MUST be of the exact same type, model and power, with a total 
input power not exceeding 200VA, and a total number of devices not exceeding 30.
Also, some lighting systems will only start at dimming levels much higher than 0%. Therefore, following the best 

operation mode

 

selection, user can adjust the minimum start level by rotating the 

minimum start level

 control.

Default ex-factory settings : mode = 1  and minimum start level = 3% (controls are fully counterclockwisely set as on the photo).

Wiring

:

Proceed to wiring according to diagram (230V disconnected).

                Note :  - the 2 "L" Line contacts are internally connected

- connection of "N" contact to Neutral is mandatory
- several pushbuttons can be connected
- NEVER use one pushbutton with several dimmers
- NEVER use pushbuttons with light indicators
- max pushbutton distance 25 m

 

- max wire size per contact 2.5 mm²

Mode selector and red indicator display

:

At reconnection of 230V, Dimmax 420SLR will wake up and 
light its 

red indicator

 for 0.5 second.

From start position (fully counterclockwisely set) of 

mode 

selector

, smoothly turn it clockwisely. The first 1/4 of its span 

will select mode 1, second selects mode 2, and so on up to 
mode 4.

The chosen mode is displayed with a visual code on the red indicator:

1 short red flash for mode 1, permanently repeated

Mode 1 = trailing edge dimming

, output power 0 - 420W, to be used with :

230V classical light bulbs and halogens (BEST mode at cold startup)

230V dimmable electronic converters designed for trailing edge, power 0 – up to 200VA

2 short red flashes for mode 2, permanently repeated

Mode 2 = leading edge dimming

 (also called "triac mode"), output power 0 - 420W, to be used with:

L

 

L

N
N

Mode selector

1

2

3

Red indicator

M

in

i

L

 

L

N
N

D

im

m

ax

 

42

0S

L

R

M

o

d

e

R

,L

,C

230 V   50 Hz

N

Lighting 
system

L

 Normally OFF 
Push button

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