Accessory Wiring; External Control Devices; Vehicle Detection Devices - Chamberlain LA500 Installation Manual

EXTERNAL CONTROL DEVICES

EXIT
(2 Terminals)
This input is a soft open command (maintained switch does not override
external safeties and does not reset alarm condition). Used for exit probe,
telephone entry, external exit loop detector, or any device that would
command the gate to open.
• Opens a closing gate and holds open an open gate, if maintained,
pauses Timer-to-Close at OPEN limit.
SHADOW
(2 Terminals)
This input is used for external shadow loop detector when loop is
positioned under the swing of the gate.
• Holds open gate at open limit
• Only active when the gate is at the OPEN limit, disregarded at all other
times
• Pauses Timer-to-Close at OPEN limit
INTERRUPT
(2 Terminals)
This input is used for photoelectric sensors and external interrupt loop
detector when loop is on the outside of the gate.
• Holds open gate at open limit
• Stops and reverses a closing gate to open limit
• Pauses Timer-to-Close at OPEN limit, activates quick close and
anti-tailgate features when enabled on the expansion board

VEHICLE DETECTION DEVICES

The same accessory inputs used for vehicle detection devices are also
used for entrapment protection devices (refer to step 7 of Installation).
The vehicle detection devices may be monitored or non-monitored, but
only ONE monitored device may be connected to each input, inclusive of
entrapment protection devices. Multiple non-monitored devices can be
wired to the same input. A monitored device sends a pulsed signal to the
operator so the operator is aware of the device. If the operator does not
receive the signal from the device indicating it is working properly, it will
not run in that direction.
CLOSE EYES/INTERRUPT
The CLOSE EYES/INTERRUPT input is for photoelectric sensor vehicle
detection for the close direction. When an obstruction is sensed during
gate closing the gate will open to the full open position. This input will be
disregarded during gate opening and resets the Timer-to-Close.
CLOSE EDGE (2 Terminals)
The CLOSE EDGE input is for edge sensor vehicle detection for the close
direction. When an obstruction is sensed during gate closing the gate will
reverse for 4 seconds then stop, disengaging the Timer-to-Close. This
input will be disregarded during gate opening.
OPEN EYES/EDGE
(2 Terminals)
The OPEN EYES/EDGE input is for photoelectric sensor or edge sensor
vehicle detection for the open direction. When an obstruction is sensed
during gate opening the gate will reverse for 4 seconds then stop. This
input will be disregarded during gate closing.

ACCESSORY WIRING

(2 Terminals)
31
(control board)
Exit
Com
Shadow
Com
Interrupt
Com
Interrupt Loop
Shadow Loop
Exit Loop
Close Photoelectric Sensors
Close Edge
Open Photoelectric Sensors OR Open Edge