3.5 Reverse Sensitivity Adjustment
This vehicular gate operator is equipped with an inherent adjustable reverse sensor (Type A) that is
used as the primary entrapment sensing system. Upon sensing an obstruction in either the opening
or closing gate cycle, the gate operator will reverse direction. For this system to function correctly,
the gate must be properly installed and work freely in both directions. A good set of roller bearing
hinges is essential for proper swing gate operation.
Both the master and slave actuator each has its own reverse sensitivity adjustment. These
are independent of each other and must be adjusted individually.
1. Activate the gate operator by momentarily shorting terminal 1 and 2 with a 1-foot piece of
18 AWG wire.
2. While the gate is running open, slowly rotate the MASTER reverse sensitivity
potentiometer clockwise until the gate reverses travel, then rotate the potentiometer 1/8
turn counter clockwise. Note: Rotating the sensitivity adjustment clockwise INCREASES
the reverse sensitivity. Rotating this adjustment counter-clockwise DECREASES the
reverse sensitivity. NOTE: After the gate has reversed, the operator will assume a "soft
shutdown" making it necessary to initiate the cycle again by momentarily shorting across
terminals 1 and 2 as in step 1.
3. Operate the gate a few times to be sure that it cycles completely.
4. Place an immobile object along the path of the gate so that the gate will strike it while in
the open or close cycle. The gate must reverse direction after striking the object. If it does
not, increase the reverse sensitivity by turning the potentiometer 1/8 turn clockwise, then
repeat this test. NOTE: After the gate has reversed, the operator will assume a "soft
shutdown" making it necessary to initiate the cycle again by momentarily shorting across
terminals 1 and 2 as in step 1.
5. You may have to repeat step 4 several times to find the correct sensitivity adjustment.
6. If a master / slave system is in use, repeat steps 1 through 5 for the slave actuator using
the SLAVE reverse sensitivity potentiometer.
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