LiftMaster LA500 Residential / Light Commercial Swing Gate Operator - Manual (Page 35)

33
ADDITIONAL FEATURES
A Single Button Control,
SBC (2 terminals)
Gate command sequence - Open, Stop, Close, Stop, ...
Soft open (maintained switch does not override
external safeties and does not reset alarm condition)
B Fire Dept Open Input
(2 terminals)
Acts as hard open.
Maintained input overrides (ignores) external safeties
(photoelectric sensor and edge), pauses Timer-to-Close
momentary input logic as single button control and
safeties remain active, re-enables Timer-to-Close.
C Exit Loop Input
(2 terminals)
Open command - opens a closed gate.
Soft open (maintained switch does not override
external safeties and does not reset alarm condition)
If maintained, pauses Timer-to-Close at OPEN limit.
Opens a closing gate and holds open an open gate.
D Shadow Loop Input
(2 terminals)
Loop detector connection when loop is positioned
under gate.
- Holds open gate at open limit
- Disregarded during gate motion
- Pauses Timer-to-Close at OPEN limit
E CLOSE EYES/Interrupt
Loop Input
(2 terminals)
CLOSE EYES/Interrupt Loop detector connection when
loop is along the side 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
Close Direction Photoelectric Sensors, IR, or Infra-red
detector wired to CLOSE EYES Input, disregarded
during gate opening.
Pulsed Photoelectric Sensors = monitored device
putting out a pulse train when unblocked.
Photoelectric Sensors, IR, Infra-red detector, normally
open contact, contact opens fully with obstruction.
F Close Edge
(2 terminals)
Close Direction Edge Sensor to Close Safety Input,
disregarded during gate opening
G Open Eyes/Edge
(2 terminals)
Open Direction Photoelectric Sensors, IR, Infra-red
detector wired or Edge Sensor to Close Entrapments
Input, disregarded during gate closing,
Pulsed Photoelectric Sensors = monitored device
putting out a pulse train when unblocked.
Photoelectric Sensors, IR, Infra-red detector, edge
sensor = normally open contact, contact reverses for
2 seconds with obstruction.
H Lock Outputs:
Maglock
(2 terminals, N.C. and
COM)
Relay contact output, Normally - closed (N.C.) output
for maglocks
Relay activates prior to motor activation and during
motor run. Relay is off when motor is off.
I Solenoid Lock &
Common
(2 terminals, N.O.
and COM)
Normally - open (N.O.) output for solenoid locks
Relay activates prior to motor activation and during
motor run. Relay is off when motor is off.
J Accessory Power Out
Switched, (2
terminals)
Switched ON with gate motion (stays on 5 seconds
after motion)
K Accessory Power Out
Un-switched, (2
terminals)
24 Vdc voltage out to power accessories, always ON
WIRING ACCESSORIES TO THE CONTROL BOARD
WIRING ACCESSORIES TO THE CONTROL BOARD
Refer to the chart below and the corresponding image for a description of the control
board inputs.
X
OPEN
CLOSE
ST
OP
DIAGNOSTIC
CODES
SBC
“FIRE
DEPT.”
OPEN
EXIT
SHADOW
CLOSE
EYES/
INTERRUPT
LOCK
N.O
.
COM
N.C
.
+ -
+ -
A
CCESSOR
Y
PO
WER
ON SW
.
EXP
.
BO
ARD
K
CLASS 2 SUPPLY 24 VOLTS
- +
+ -
ID RESET ALARM
GROUND
SBC
Com
Com
Com
Com
Com
Fire Dept
Exit
Shadow
Interrupt
Close (+)
Close (-)
Lock N.C. (Maglock)
Com
Lock N.O. (Solenoid)
Com (-)
AccPower +24 Vdc
Com (-)
AccPower +24 Vdc
Single Button
Control Station
Fire Dept.
Exit Loop
Shadow Loop
Interrupt Loop
Open Direction
Safety
Close Direction
Safety
Mag and Solenoid
Lock
A
B
C
D
E
F
G
H
I
J
K
Acc. Power
Open (+)
Open (-)
(right side of control board)