28
Connecting Additional Safety Devices
The Mighty Mule® 350 is equipped with built-in obstruction sensitivity. The opener is designed to stop and reverse the gate
for 2 seconds when it comes in contact with an obstruction. However, obstruction sensitivity, although functioning properly,
may not be sensitive enough
to prevent bodily injury in some circumstances
. To increase your protection against entrap-
ment,
GTO
recommends
using some form of additional safety device.
When installed, contact sensors must be mounted in
compliance with UL 325, Underwriters Laboratories safety standard for gate openers. Review page 5 for information about
mounting requirements for safety edges ("contact sensors").
Refer to the sensor manufacturer’s instructions for information about installing these devices on a vehicular gate.
PLEASE NOTE:
Contact sensors are not
included with
the Mighty Mule® 350.
The Mighty Mule® 350 will ONLY accept accessory devices with normally open contact output.
Make sure the power switch to the opener is
turned off before connecting safety device
wiring to the terminal blocks. Unplugging the
transformer does not turn power to the opener
OFF.
Contact Sensor Input Connection:
Connect one of the EDGE contact sensor wires to the
COMMON (COM)
terminal and the other to the
EDGE
terminal on the Mighty Mule® 350 control board.
Activation of a contact sensor while the gate is in motion
will cause the gate to stop and reverse for two (2)
seconds.
Contact Sensors (safety edges)
If not installing a contact sensor skip to next section.
Although GTO strongly recommends the use of additional safety devices, we do not endorse any specific
brand names. Only use products that are certified and listed to be in compliance with any applicable UL
standards (Underwriters Laboratories) and national and regional safety codes.
Call GTO Sales at 1-800-543-4283 for information on compatible
products for your specific application.
1
ON
2
3
4
15
CHARGING
POWER
STATUS
RF
PULL-PUSH
MODE1
MODE2
LOCK/BEACON
OFF
120
MIN
MAX
STALL FORCE
CLOSE TIME
SET
LIMIT
LEARN
REMOTE
AUX OUT
SOLAR
PANEL
18VAC
RECR
GRN
BL
K
RED
EXI
T
SAFET
Y
EDGE
CY
CL
E
COMMO
N
LINK
Wires from Contact Sensor
