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Sensors can be used to detect obstacles in the path of closing doors. The simplest sensor consists of a light beam aimed across the opening: when the beam is broken by an obstacle, the operator prevents the door from closing.
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at one end of a belt. The door is clamped to the belt. To open the door, the motor turns the pulley, which in turn turns the belt, which in turn drags the door. To close the door, the reverse occurs.
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Other sensors such as resistance-sensing motors can be used to reverse the closing action of the door after an obstacle is encountered.
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Sliding door operators are typically used on the outside doors of large retail businesses. (smaller retail businesses prefer
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by a set of mechanical linkages; the motor, geared down, would rotate linked arms, which in turn would drive the door.
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A trigger from any of the above requests that the door be opened (or reopened if it was closing).
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for pedestrian use. It opens the door automatically, waits, then closes it.
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Circular sliding door (segment circular, semi-circular or full circular)
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The operator is placed in the space above the sliding door.
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Pushbutton - the door opens when a user presses a button.
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There are several types of sliding doors, these are:
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Hermetic sliding door (single wing or double wings)
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Standard sliding door (single wing or double wings)
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159:Automatically (in the case of elevators).
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152:Access control - the door opens when an
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180:safety sensors are also commonly used.
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253:Overview of ANSI standards
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64:October 2023
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