Chamberlain LA412 User Manual
Force and Timer to Close
FORCE ADJUSTMENT
The operator is equipped a with an obstruction sensing
feature. If the gate encounters an obstruction the operator
will automatically reverse direction and stop. Based on the
length and weight of the gate it may be necessary to make
force adjustments. The force adjustment should be high
enough that small objects such as branches or wind will
not cause nuisance interruptions but low enough to prevent
serious injury to a person or a vehicle.
The operator is equipped a with an obstruction sensing
feature. If the gate encounters an obstruction the operator
will automatically reverse direction and stop. Based on the
length and weight of the gate it may be necessary to make
force adjustments. The force adjustment should be high
enough that small objects such as branches or wind will
not cause nuisance interruptions but low enough to prevent
serious injury to a person or a vehicle.
To adjust the force:
Using the 3-button remote or the Single Button Control
(SBC) button on the control board, open and then close
the gate. If the gate stops or reverses before reaching the
fully open or closed position increase the force by turning
the force control slightly. Run operator through a complete
cycle.
Using the 3-button remote or the Single Button Control
(SBC) button on the control board, open and then close
the gate. If the gate stops or reverses before reaching the
fully open or closed position increase the force by turning
the force control slightly. Run operator through a complete
cycle.
NOTE: Weather conditions can affect the gate movement,
so seasonal adjustment may be required. The force
control is factory set to the mid position.
so seasonal adjustment may be required. The force
control is factory set to the mid position.
TIMER-TO-CLOSE (TTC)
The TIMER TO CLOSE feature can be set to
automatically close the gate after a specifi ed time period.
The TTC is factory set to OFF.
If the TTC is set to the OFF position, then the gate
will remain open until the operator receives another
command from a remote control or SBC.
The TIMER TO CLOSE feature can be set to
automatically close the gate after a specifi ed time period.
The TTC is factory set to OFF.
If the TTC is set to the OFF position, then the gate
will remain open until the operator receives another
command from a remote control or SBC.
To set the TIMER TO CLOSE:
Rotate the TIMER TO CLOSE dial to the desired setting.
The range is 0 to 180 seconds, 0 seconds is OFF.
Rotate the TIMER TO CLOSE dial to the desired setting.
The range is 0 to 180 seconds, 0 seconds is OFF.
NOTE: Any radio command, SBC, or CLOSE command
on the control board prior to the TTC expiring will close the
gate. The TTC is reset by any signals from the loops, close
edges, and close safety sensors (IR’s).
on the control board prior to the TTC expiring will close the
gate. The TTC is reset by any signals from the loops, close
edges, and close safety sensors (IR’s).
Without a properly installed safety reversal system, persons
(particularly small children) could be SERIOUSLY INJURED or
KILLED by a closing gate.
• Too much force on gate will interfere with proper operation
(particularly small children) could be SERIOUSLY INJURED or
KILLED by a closing gate.
• Too much force on gate will interfere with proper operation
of safety reversal system.
• NEVER increase force beyond minimum amount required to
close gate.
• NEVER use force adjustments to compensate for a binding
or sticking gate.
• If one control (force or travel limits) is adjusted, the other
control may also need adjustment.
• After ANY adjustments are made, the safety reversal system
MUST be tested. Gate MUST reverse on contact with a rigid
object.
object.
Z22
R91
CLOSE
EDGE
EDGE
R94
R92
R93
L1
R1
R2
Z1
K5
K6
K2
F3
10A 32V
D1Ø
OPEN EDGE/
PHOTO
OPEN
PHOTO
PHOTO
CLOSE
PHOTO
PHOTO
R227
R2Ø7
Z2Ø
R223
P1
Z9
Z8
F2
F6
D4
R9
R224
U4
CONTROL
INPUTS
FORCE
TIMER TO
CLOSE
OFF
MAX
OPEN
SINGLE BUTTON
RESET
STOP
SHADOW
INTERRUPT
CHGR
OVLD
OVLD
COM
COM
COM
LOOP
INPUTS
POWER
BATT 1
BATT 2
F1 20A 32V
R35
D9
Z3
Z4
U3
D1
C11
C13
C12
D15
C2
R4
R1Ø1
R1ØØ
R9Ø
Q9
K1
R196
Q22
D8
K3
D22
C4
ACCESSORY
OVLD
MOV1
MOV2
Z12
24 VAC/
SOLAR
SOLAR
INPUT
GATE 2
ACCESSORY
POWER
MAGLOCK
ALARM
GATE 1
C
C
NC
NO
NO
GRN
WHT
YEL
BLU
BLU
RED
BRN
GRN
WHT
YEL
RED
BRN
GRN
WHT
YEL
BLU
RED
BRN
F4
10A 32V
F7
24V
COM
OVLD
OVLD
GATE 2
DIAGNOSTIC
GATE 1
GATE 2
J4
LEARN
XMITTER
ON
D4
D2
Z9
Z8
FORCE
TIMER TO
CLOSE
OFF MAX
FORCE
Minimum Force
Maximum Force
TIMER TO
CLOSE
OFF
MAX
35
Programming