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AT SERIES ARCHITECTURAL DIMMER   

 

 

 Revision 0.3   

 

 

 

 

 

 

OWNERS MANUAL

 

 

 

 

 

 

03/16/2020 

www.lightronics.com 

Lightronics Inc. 

 

 

 

 

 

509 Central Drive Virginia Beach, VA  23454 

 

 

 

 

    Tel 757 486 3588 

 
MAINTENANCE 

 
WARNING!   RISK OF ELECTRICAL SHOCK 

There are lethal voltages present in this product when power is applied to its feed circuits. 
The cabinet should be opened only by a qualified electrician.  

 

The only user servicable part in the AT Series dimmer is the Type ABC, ½ Amp, 250 Volt, fast acting fuse  The fuse 
may be replaced ONLY with an identical fuse. 

 
WARNING! 

Make sure that all power is removed from feed circuits before changing the fuse. 

 

Service by other than the manufacturers authorized agents may void your warranty. 

 

The best way to prolong the life of your unit is to keep it cool, clean, and dry.  It is important that the cooling intake 
and exit vent holes are clean and unobstructed. 

 

MODEL NUMBERS AND CONFIGURATION 

 

The table below shows the number of channels and circuit breaker information for each model number. 

 
 
 
 
 
 

 

An additional suffix may also appear in the model number.  This suffix 

is “/2” and indicated that the unit is for 230VAC 

applications.   

 

For  one  and  two  channel  versions,  only  the  components,  indicators,  and  connection  points  for  the  applicable 
channels will be present in the unit. 

 

MODEL 
NUMBER 

DESCRIPTION 

AT-402 

4 Channels 

AT-202 

2 Channels 

AT-102 

1 Channel 

Summary of Contents for AT SERIES

Page 1: ...applications It can be supplied with up to four 2400 Watt lighting circuits channels and be remotely controlled by a DMX lighting console The AT series dimmers are provided with a fast acting 20 Amp...

Page 2: ...Standard sized knockout holes are provided in the top bottom and right side of the chassis for wiring Be sure that the vent holes in the chassis and cover are not obstructed since they are needed for...

Page 3: ...up of the AT Series dimmer is done using the 2 LED indicators and the 3 push buttons located at the bottom left of the low voltage section of the circuit board inside of the unit Use these controls t...

Page 4: ...abeled on the unit If a circuit breaker will not remain closed then there is an overload at the lamps for that channel which MUST be corrected before operation can continue INDICATORS There is an LED...

Page 5: ...hting is controlled by external momentary switch closures either manually or by automated equipment The AT 402 dimmer is designed to activate preset lighting conditions in response to these controls A...

Page 6: ...tched channel controls and DMX input It sets all channels to maximum intensity and remains in effect until the button is pushed again At that time the unit will Resume normal operation return to the i...

Page 7: ...n the SYMBOL channel preset level and preset fade and its VALUE intensity and fade time There are 2 digits and 3 buttons to control everything Press the NEXT button to advance through each SYMBOL Pres...

Page 8: ...nnel 2 Preset D up fade time 1 99 seconds d2 Channel 2 Preset D down fade time 1 99 seconds A3 Channel 3 Preset A up fade time 1 99 seconds A3 Channel 3 Preset A down fade time 1 99 seconds b3 Channel...

Page 9: ...from feed circuits before changing the fuse Service by other than the manufacturers authorized agents may void your warranty The best way to prolong the life of your unit is to keep it cool clean and...

Page 10: ...rves the right to make any changes modifications or updates as deemed appropriate by Lightronics to products returned for service Such changes may be made without prior notification to the user and wi...

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