Page 2 of 5
AS40L COMPACT DIMMER
Version 1.0
OWNERS MANUAL
10/08/2021
www.lightronics.com
Lightronics Inc.
509 Central Drive, Virginia Beach, VA 23454
tel 757 486 3588
DESCRIPTION
The AS40L is a compact 4 channel light dimmer. It
has a maximum capacity of 600 Watts per channel
and a maximum TOTAL load capacity of 2400
Watts. It is supplied with an input power cord which
may be connected to a 120 VAC, 20 Amp power
circuit. The AS40L is intended for INDOOR USE
ONLY. The AS40L is compatible with the industry
standard 3 wire multiplex control signal protocol
(LMX). The AS40L may be operated in a relay (non-
dim) mode. The unit will also function as a stand-
alone chaser and has eight preset chase patterns
which may be used.
INSTALLATION
LOCATION: Locate the unit vertically with control
signal connectors on the bottom in a well ventilated
area away from moisture and heat. Two ½” holes
are provided on one end of the dimmer to install a
lighting bar pipe clamp and suitable safety cables.
POWER CONNECTIONS: Extending from the
chassis is a 20 amp line cord for connection to a 120
VAC, 20 Amp, grounded service. Total capacity of
the AS40L is 2400 watts.
LOAD CONNECTIONS: There is one Edison Plug
connector provided for each AS40L output channel.
They are located along the left and right edges of
the unit. The markings on the cover indicate the
channel numbers for each connection. The
maximum capacity of each channel is 600 watts.
CONTROL SIGNAL CONNECTIONS: The male
three pin "XLR" connector on the end of the unit
connects to your lighting console. The female "XLR"
connector is used to connect to other dimmers.
CONTROL CABLE WIRING: The XLR multiplex
connector pins are wired as follows:
OPERATION
NORMAL MODE (non-chaser)
A green LED in the end panel will indicate that a
valid control signal (LMX) is applied to the unit. A
DIP switch block on the end panel selects the
starting channel number of the dimmer. The 7 right
hand switches (numbered 4 -10) control this
function. For example, if all switch positions are
down - the dimmer will respond to console channels
1-4. Moving the switch position on the far right to up
will set the dimmer to respond to channels 5-8. A
complete table of channel assignments is provided
at the end of this manual.
RELAY MODE: Pairs of channels (1/2 and/or 3/4)
may be switched into the relay mode. In this mode
the output of these channels will be either off or full
on depending on the control console channel
setting. The trip point for turn on is aprox. 50%. The
2 left hand switches on the DIP switch block control
relay mode channel selection.
NORMAL MODE SWITCH FUNCTIONS
CHASER MODE
When operating in the chaser mode the AS40L
becomes independent of the control console and
other dimmers. The green LED indicator is OUT
when in the chaser mode. Chaser mode is turned
on and off by one of the DIP switches on the end of
the unit. A diagram on the unit cover shows the
switch settings for controlling chaser operation.
Eight different chaser patterns are available. A
ADDRESS
NORMAL/CHASER
(DOWN FOR NORMAL)
1/2 DIM/RELAY
3/4 DIM/RELAY
(DOWN = DIM,
UP = RELAY)
Pin #
Signal
1
Common
2
Console Power (+15vdc)
3
LMX (multiplex) signal
CHASSIS END VIEW
