E T C I n s t a l l a t i o n G u i d e
Automatic Load Control Relay
Automatic Load Control Relay
Page 8 of 8
Electronic Theatre Controls, Inc.
Examples of Use
Normal Light Fixture
Emergency Light Fixture
ALCR
Dimmer Neutral (White)
Dimmer Hot Feed
Emergency Load
Emergency Hot
Emergency Neutral (Gray)
Dimmer Control with D20FB
• When normal power is present, normal fixture(s) dim
and emergency fixture(s) remain off
• When normal power is lost or dimmer circuit
breaker trips, emergency fixture(s) turns on
0-10V Fixture Control (ALCR-DIN only)
• When normal power is present and switch is
closed, both 0-10V controlled fixture(s) dim.
• When normal power is present and switch is open,
both 0-10V controlled fixture(s) turn off.
• When normal power is lost or fire alarm connection
is broken, all fixture(s) turn on to full - 0-10V
connection is opened.
Dimmed Circuit
ETC D20FB
module in
Sensor or
Unison Dimmer
Rack
Emergency Light Fixture
ALCR
Normal Neutral (White)
Normal Hot (Black)
Emergency Load
Emergency Hot
Emergency Neutral (Gray)
Backup Arrangement
• When normal power is present, the emergency
load is turned off
• When normal power is lost, the emergency load
turns on
* Cap end with wire nut or other suitable method to
prevent contact with bare wire.
Emergency Light Fixture
Normal Neutral (White)
Normal Hot (Black)
Normal Switch
(Red)
Emergency Load
Emergency Hot
Emergency Neutral (Gray)
ALCR
Normal Light Fixture
Switch Control Arrangement
• When normal power is present, switch controls both
the normal and emergency light fixtures
• When normal power is lost, the emergency light
fixture(s) turn on regardless of the switch state
Normal Switch
(Red)
*
WIRE
NUT
A
UTOMATED
L
OAD
C
ONTROL
R
ELAY
(ALCR-DIN)
Status
LED
Option
Button
Remote
LED
Emergency Load
Normal
Neutral (White)
Normal Hot (Black)
Emergency Neutral (White)
Emergency Hot
0-10V signal
0-10V signal
0-10V common
0-10V
controller
0-10V Non-Emergency Fixture
0-10V Emergency Fixture
0-10V /
FLO
Remote
Loop
Emergency
Out
Neutral
In
Normal
Switch
Sense
Neutral
