Expansion Board; Expansion Board Overview - Chamberlain LA500 Installation Manual

To AVOID damaging the circuit board, relays or accessories, DO NOT connect more than 42 Vdc (32 Vac) to the AUX relay contact terminal blocks.

EXPANSION BOARD OVERVIEW

1 QUICK CLOSE Switch:
OFF: No change to the gate's normal operation.
ON: When CLOSE EYES/Interrupt loop is deactivated it causes an
opening or a stopped gate to close (ignores the Timer-to-Close).
2 AC FAIL Switch:
OPEN: Loss of AC power will cause the gate to open approximately
15 seconds after AC power fail and remain OPEN until AC power is
restored (enabling the Timer-to-Close).
BATT: With loss of AC power, gate will remain in present position and
operator is powered from batteries.
3 EXIT LOOP FAIL Switch:
• When set to OPEN, if the EXIT plug-in loop detector detects a fault,
then the gate will open and remain open until fault is cleared. When
set to CLOSE, then plug-in EXIT loop detector faults are ignored
(EXIT loop is faulted and inoperative).
4 ANTI-TAIL Switch:
OFF: When CLOSE EYES/Interrupt loop is activated it causes a closing
gate to stop and reverse.
ON: When CLOSE EYES/Interrupt loop is activated it causes a closing
gate to pause. Once the vehicle is clear the gate will continue to close.
5 AUX RELAY Switches: Set the AUX RELAY switches as needed to
obtain the desired function as shown on the following page.

EXPANSION BOARD

10
SHADOW INTERUPT EXIT
1 2
6 EYE/EDGE Switches: Set the EYE/EDGE switches as needed to obtain
the desired OPEN or CLOSE functionality.
7 1, 2, and 3 LEDs: LEDs indicating the status of the EYE/EDGE inputs.
Also used to check the firmware version of the expansion board:
1. Locate the 1, 2, and 3 LEDs on the expansion board.
2. Disconnect AC/DC power to the main control board for 15
seconds.
3. Connect power. The 1, 2, and 3 LEDs will flash in sequence until
the main control board firmware revision is displayed. When the
green POWER LED glows solid the LED 1 will flash the version
number, then stop, then the LED 2 will flash the revision number
(for example: For version 5.1 when the green POWER LED is solid
the LED 1 will flash 5 times, then stop, then the LED 2 will flash
once).
8 MAIN BOARD Input: Input Connection for the main board connector.
9 Input LEDs: LEDs indicating the status of the SBC, OPN, CLS, and STP
inputs.
10 Loop Detector Inputs: Inputs for the Plug-In Loop Detectors (Model
LOOPDETLM)
5
3 4
33
POWER
8
6
7
EYE
1
ONLY
EYE/
2
EDGE
EYE/
3
EDGE
COM
9
SBC
OPN
CLS
STP
COM