Lightronics AR1202 - Manual (Page 3)

Page 3 of 22
AR – 1202 RTC ARCHITECTURAL DIMMER
Revision 1.93 OWNERS MANUAL 06/03/2008
www.lightronics.com
Lightronics Inc. 509 Central Drive Virginia Beach, VA 23454 Tel 757 486 3588
AR-1202 UNIT DESCRIPTION
The AR-1202 consists of an embedded micro
processor and 12 dimmer channels of 2.4KW each.
Each dimmer channel is protected by a 20 Amp circuit
breaker. Heavy duty filtering chokes are used to
reduce noise. Dimmer channel semiconductors
exceed a 200% load carrying capacity overhead
allowance. All components and sub systems are UL
recognized components. All internal wiring conforms
to UL standards as they apply to industrial controls.
Dimensions and weight information is given at the
end of this manual.
EXTERNAL CONTROLS
The AR-1202 can communicate with remotely located
control equipment in several ways.
A USITT DMX-512 protocol bus is provided so the
unit may be used with any DMX lighting console.
The AR-1202 is fully patchable with respect to the
DMX bus.
The AR-1202 may also be controlled by several types
of wall mounted smart remote stations. Smart remotes
communicate with the AR-1202 by way of a low
voltage RS-485 bus. This bus is completely separate
from the DMX bus. Smart remotes are used to
activate preset scenes which have been stored in the
AR-1202. There are several types of smart remote
stations. Multiple smart remotes of the same or
different types may be chained together on the RS-485
bus. The same RS-485 bus may be chained to
multiple AR-1202 dimmer packs.
The AR-1202 may additionally be controlled by an
arrangement of one or more momentary switches
(simple remotes). The switches may be used to
control a specific set of scenes stored in the AR-1202.
REAL TIME CLOCK EVENT SYSTEM
The AR-1202 contains an internal clock and timer sub
system. This subsystem may be used to create events
which activate and switch between preset lighting
scenes based upon times, days, and dates. A total of
128 events may be programmed.
POWER REQUIREMENTS
The AR-1202 may be operated from 50/60 Hz,
120/208 VAC, three phase power or from 50/60 Hz,
120/240 VAC, single phase power. Input power to the
unit must be capable of delivering 80 Amps per line if
using three phase or 120 Amps per line if using single
phase power.
The AR-1202 can operate using only 2 phases of a 3
phase power source. This is NOT RECOMMENDED
since it causes an unbalanced load at the power feed
source.
The AR-1202 is must be used with a WYE connected
power source. A NEUTRAL line is required.
INSTALLATION
PHYSICAL LOCATION
The unit is intended for INDOOR OPERATION
ONLY and should not be subjected to excessive
moisture or heat. The unit should be installed where a
supply of circulating air is available. The AR-1202 is
designed to be wall mounted in a equipment room or
electrical distrubution area. The ambient air in the
installation area should be below 86 deg F.
The AR-1202 is convection cooled by heatsinks on
the left and right sides of the unit. Provide spacing
between the unit and other equipment to allow air
flow around the unit (particularly around the finned
heat sinks). See “Dimensions and Locations” in this
manual for more information concerning mounting of
the unit.
POWER INPUT CONNECTIONS
Consult applicable electrical codes to determine the
proper wire type and methods.
The AR-1202 operates using either 3 phase 120/208
VAC or single phase 120/240 VAC power. The unit
is shipped from the factory as a THREE PHASE unit.
It can be field converted to single phase unit.
WARNING
MAKE CERTAIN POWER IS REMOVED
FROM THE FEED CIRCUITS
BEFORE YOU BEGIN INSTALLATION.