Lightronics AT402 - Manual

Page 1 of 8
AT SERIES ARCHITECTURAL DIMMER
Revision 0.1 OWNERS MANUAL 08/29/2003
www.lightronics.com
Lightronics Inc. 509 Central Drive Virginia Beach, VA 23454 tel 757 486 3588
DESCRIPTION OF UNIT
The AT Series Dimmer is a unit specifically optimized for architecural applications. It can be supplied with up to
four 2400 Watt lighting circuits (channels) and be remotely controlled by a DMX lighting console. Some models
are provided with a fast acting 20 Amp magnetic circuit breaker for each channel. A table at the end of this
manual gives a description of the different model numbers. Additional models can be supplied for 220 VAC
operation.
The unit is intended for wall mounting. AT Series dimmers are for INDOOR USE ONLY.
POWER REQUIREMENTS
The AT Series dimmer requires a 120VAC hot power feed line for each lighting circuit (channel), a common
neutral, and an earth ground. Each of these feeds must powered by a circuit providing a minimum of 20 Amps
and supplies only one of the AT Series dimmer lighting circuits. The power feed for channel 1 also powers the
unit's internal electronic circuitry. The internal circuitry is protected by a replacable 1/2 Amp, 250 Volt, fast acting
fuse. The AT dimmer may be operated from either single phase or three phase power and may be switched
between these power types by the user.
INSTALLATION
1
2
3
4
1
2
3
4
120VAC
POWER IN
LIGHTING
LOADS
1/2AMP FUSE
AND SPARE
1
2
3
4
CIRCUIT
BREAKERS
NEUTRALS
GROUNDS
PROGRAMMING
CONTROLS
AND DISPLAY
CIRCUIT
BOARD
AT-402 FRONT VIEW (Cover Removed)
CONTROL
TERMINAL STRIP