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CONNECTING SAFETY DEVICES
The GTO/PRO SL-1000 and SL-2000 series operators are equipped with built-in obstruction sensitivity. These
operators are designed to stop and reverse the gate for 2 seconds when it comes in contact with an obstruction.
However, obstruction sensitivity, even when properly adjusted, may not be sensitive enough to prevent bodily
injury. For this reason, safety edges or photoelectric sensors MUST be installed on the gate. Safety edges (or
photoelectric sensors) must be mounted in compliance with Underwriters Laboratories’ safety standard for gate
operators, UL 325. Review page 6 for information about mounting requirements for safety edges and photo-
electric sensors.
Refer to the sensor manufacturer’s instructions for information about installing these devices on a vehicular
gate.
Make sure the control box power switch is OFF before connecting safety device wiring to the terminal
blocks.
Insert the safety device wires into the CLS EDG terminal (located on the FIRST OPERATOR terminal block)
for the gate closing mode. Ground the safety device at the GRN terminal. Connect the safety device wires for
the gate opening mode to the OPN EDG terminal in the same manner.
MAKE SURE TO GROUND THE SAFETY DEVICES AT THE GRN TERMINAL! THE CONTROL
BOARD COULD BE DAMAGED IF THE SAFETY DEVICES ARE NOT GROUNDED!
ON
SECOND OPERATORFIRST OPERATORPOWER IN ALARM ACCESSORY RCVR
SEQ1
SEQ2
LEARN
18VAC SOLAR
~ ~ – +
RED
BLK
ORG
BLU
GRN
CLS ED
G
OPN EDG
RED
BLK
BLU
ORG
ORG
BLU
WHT
GRN
GRN
CLS ED
G
OPN ED
G
R B G
Power Cable
from First Operator
Wire from Close Safety Edge
or Photoelectric Sensor
Wire from Open
Safety Edge or Photoelectric Sensor
Ground Wire
Ground Wire
CONNECTING ADDITIONAL SAFETY DEVICES
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 UL (United Laboratories) and national and regional safety codes.
Call GTO Sales at 1-800-543-4283 for information on compatible products for your specific
application.