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RA – 122 RACK MOUNT ARCHITECTURAL DIMMER
Revision 0.93 OWNERS MANUAL 09/26/2011
www.lightronics.com
Lightronics Inc. 509 Central Drive Virginia Beach, VA 23454 Tel 757 486 3588
MAINTENANCE AND REPAIR
TROUBLESHOOTING
To simplify troubleshooting - reset the unit or
provide a known simple set of conditions.
Check that the console is powered and that
console channels are correctly patched or set.
Check the control cable between the dimmer(s)
and console.
Verify the loads and their connections.
OWNER MAINTENANCE
FRONT PANEL FUSES:
The RA-122 has two fuses.
The left fuse is 1 Amp. The right fuse is 1/4 Amp.
Both are 250V, 1.25 x .25 inch, fast acting fuses.
These fuses provide protection for the internal
electronic control circuitry and the fan. They may be
replaced ONLY by fuses of identical type and size.
There are no user serviceable parts inside the unit.
The best way to prolong the life of your unit is to keep
is cool, clean, and dry. It is important that the cooling
intake and exit vent holes are clean and unobstructed.
Service by other than Lightronics authorized agents
may void your warranty.
OPERATING AND MAINTENANCE ASSISTANCE
If service is required, contact the dealer from whom
you purchased the equipment or contact Lightronics,
Service Department, 509 Central Drive, Virginia
Beach, VA 23454 TEL 757 486 3588.
Lightronics recommends that you record the serial
number of your unit for future reference.
SERIAL NUMBER
___________________
RA-122 UNIT SPECIFICATIONS
CHANNELS/CAPACITY: 12 @ 2400 Watts each
POWER REQUIREMENTS:
120/208VAC three phase,80 Amps each line
OR
120/240VAC single phase, 120 Amps each line
POWER DEVICES: Dual 65 Amp SCRs
POWER CONNECTOR:
Terminal strip
CHANNEL OUTPUT: Edison Plug
External Terminal Strip
Patch Panel
Socapex
CIRCUIT BREAKERS: 20 Amp fast acting
MINIMUM LOAD: 15 Watts
CURVE: Modified square law
FILTER RISE TIME: 600 usec. minimum
OUTPUT FUNCTION: DIMMER or RELAY
selectable
CONTROL INPUT: DMX-512 U.S.I.T.T. standard
FRONT PANEL: 8 char. x 2 line LCD display
REMOTE NETWORK: RS-485, 62.5 Kbaud,
bidirectional 9 bit network
LOCAL PRESETS: 100 scenes standard,
expandable to 255 scenes
CLOSURE INPUT: 8 inputs for single, dual
button, or combine stations
REMOTE STATIONS: Total of 32 remote stations
with unique system
addresses
SLAVE UNITS: Up to 31 additional units may
be added
SIZE : 3.5"H x 19"W x 16"D
WEIGHT: 40 pounds
ARNING
MAKE CERTAIN POWER IS REMOVED
FROM THE FEED CIRCUITS
BEFORE HANDLING THE UNIT.
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