Sliding Gate Safety Sensors and Photo Eyes in Round Rock
Eighteen inches off the ground and one inch inside the gate line is a common height for a photo eye on a driveway gate, and the figures kept at sliding gates round rock new trouble start with that placement because a bad mount causes most false stops. A sliding gate in Round Rock can close on a bicycle, a child or a bumper, so sensors and stops are part of the build, not an add-on.
Photo eyes at the opening
A photo eye pair sits on both sides of the opening, facing each other across the path of the gate. When the beam is broken while the gate is closing, the operator reverses. The pair has to line up within a narrow cone, so the posts must be solid. In expansive clay soil a leaning post can knock the beam out of aim during a dry spell.
Edge sensors on the leaf
An edge sensor runs along the leading edge of the gate, usually as a rubber strip with a switch inside. Contact with an object signals the operator to stop or reverse. A second edge on the tail side protects against pinching between the gate and a post or fence. These are fitted to the steel frame with brackets that do not interfere with the rollers.
Mechanical stops and limits
Open and closed limits keep the gate from running past its travel. Magnetic or mechanical limit switches are set during commissioning and checked after the first season. A heavy steel slide gate left to run without a firm stop will damage the catch post, so the stop is bolted into the beam and not just into a post.
Gates near sidewalks and streets
Where the gate sits close to a sidewalk, a school route or a busy road near Interstate 35, the gate needs sensors on both directions of travel and a clear view of the opening from the street. Visible warning signs and a loop detector under the pavement for exit traffic are common additions. Setback from the curb affects how far a vehicle waits outside.
Testing after install
A sensor that has not been tested is only a guess. The photo eye is blocked during closing, the edge is pressed with a block of wood, and the stop force is checked with a light resistance. Those tests repeat after heavy rain and again each season, because moisture and misalignment drift over time.
Wiring matters as much as the devices. Sensor cable runs in conduit, joints are sealed against sprinkler spray, and the control board sits above the splash line, because a wet connector is a common reason a gate refuses to close.