AUTOMATIC GATE OPENER
• Installation Manual
8
Additional Safety Devices
The Zareba Automatic Gate Opener features built-in
obstruction sensitivity. The opener is designed to stop
and reverse the gate within two seconds of contact with
an obstruction. However, the gate opener’s built-in
obstruction settings, even when properly adjusted, may
not be sensitive enough to prevent injury in some cir-
cumstances. See
page 26
for more information.
Safety devices, such as contact (safety edge) sensors or
non-contact (photoelectric) sensors, that stop and
reverse gate direction upon sensing an obstruction are
suggested for additional protection.
Zareba Systems recommends using additional safety
devices. Be sure to use products that are certified and
that comply with applicable UL standards and national
and regional safety codes. Call Zareba Systems at 1-800-
272-9877 for information on compatible products for
your application.
Important: In all cases, review the safety-device manu-
facturer’s instructions for information on installing
these devices on a vehicular gate.
Contact Sensors (safety edges)
Contact sensors are also referred to as “safety edges.”
Activating a properly installed contact sensor while the
gate is moving causes the gate to stop and reverse with-
in two seconds.
Contact sensors must be mounted in compliance with
UL 325, the Underwriters Laboratories safety standard
for gate openers (see
fig. 6
).
Turn off the power switch to the openers
(actuators) before connecting safety device
wiring to the terminal blocks. Unplugging
the transformer
does not
turn off power to
the openers.
Contact Sensor Input Connection (
fig. 7
)
Connect one of the
OPEN EDGE
contact sensor wires to
the
COMMON (COM)
terminal and the other to the
OPEN EDGE terminal on the gate opener control board.
Connect one of the
CLOSE EDGE
contact sensor wires
to the
COMMON (COM)
terminal and the other to the
CLOSE EDGE
terminal on the gate opener control
board.
wire from contact
sensor (close edge)
wire from contact
sensor (open edge)
Figure 7
Figure 6
Contact Sensor (not included)
!
