25
C
ONNECTING
S
AFETY
D
EVICES
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 4 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 OPERATOR
FIRST OPERATOR
POWER IN
ALARM ACCESSORY
RCVR
SEQ1
SEQ2
LEARN
18VAC SOLAR
~ ~
–
+
RED
BLK
ORG
BLU
GRN
CLS EDG
OPN EDG
RED
BLK
BLU
ORG
ORG
BLU
WHT
GRN
GRN
CLS EDG
OPN EDG
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