Optional Accessory Wiring - Chamberlain LiftMaster SL930 User Manual

OPTIONAL ACCESSORY WIRING

LIGHT DELAY TIMER
If it is desired that the driveway illuminate when the gate is
activated, a light delay timer may be installed. The light delay
timer will switch power on to the light for two minutes, then shut
power back off. The timer relay is capable of switching up to 10
Amps which will handle most flood or spot lights available. A
general hook-up diagram for the light and timer is shown
(Figure 8).
EXTENDED AUTO CLOSE TIMER
The standard auto close timer built into the cir cuit board can be adjusted to between
0 and 45 seconds. Some installations may require that the gate
must stay open for more than 45 seconds before it automatically
closes. The extended auto close timer may be hooked up as
shown (Figure 9). This optional timer can be adjusted to
automatically close the gate after the gate has been open between
1 and 100 minutes. The extended timer will add time onto the
auto close timer already on the board. For more control, reduce
the timer adjustment on the main control board to zero seconds
and make all adjustments with the extended auto close timer
knob.
WARNING ALARM
For added safety, a warning alarm may be installed in the gate
operator to give audible warning that the gate is in motion. This
will in some cases give extra time to get out of the way of the
moving gate. The warning alarm is an ear piercing 120 decibel,
dual tone, piezo siren that operates on 12 Volt DC. To install the
alarm, mount the siren next to the circuit board and connect the
positive wire to terminal 12 (12VDC) (Figure 10). Connect the
negative wire to limit switch 1 NC or limit switch 2 NC for the
alarm to sound in the open or closed directions. Contact the
manufacturer for connecting the alarm to sound in both
directions. If the alarm is too loud, the sound may be partially
muffled by applying tape over the two holes where the sound
comes out.
W I R I N G
Figure 8
Figure 9
Figure 10
Limit Switch 1 Limit Switch 2
ALTERNATE
19
Light
Light Delay
Timer
Light
Power
Extended Auto-Close
Timer
OPEN LIMIT
ALTERNATE
Warning Alarm