A high speed door safety edge is a contact-sensitive safety device fitted to the moving edge of the door. If the door meets an obstruction while closing, the safety edge detects the contact and signals the controls to stop or reverse the movement.
In this guide, we’ll explain how safety edges work on high speed doors, the signs that something may be wrong and how they are checked and tested.
The safety edge is typically fitted along the bottom or leading edge of the moving door.
If it comes into contact with a person, vehicle, pallet or another obstruction, the edge compresses and sends a signal to the door control system.
Unlike sensors that can detect something before it reaches the doorway, a safety edge is a contact safety device. It responds when the moving edge itself meets an obstruction.
The process is relatively simple:
This allows the door to react when something is caught in its closing path rather than continuing to travel against the obstruction.
Not necessarily. The exact response depends on the door and control setup.
In many systems, activating the safety edge will stop or reverse the closing movement. In some cases, a detected fault within the safety system may instead prevent normal operation until the issue has been checked.
A safety edge reacts when the moving edge of the door makes physical contact with an obstruction.
Other safety devices, such as photocells or presence sensors, can detect a person, vehicle or object before contact occurs. The safety edge therefore forms one part of the wider safety arrangement around the door rather than replacing other detection devices.
Some safety edge problems are easy to spot, while others may first appear as a change in how the door operates.
Signs that something may be wrong include:
A physical inspection may reveal an obvious problem, but intermittent faults can be harder to identify and should be properly investigated.
No. A door that reverses unexpectedly or reports a safety-edge fault does not necessarily have a problem with the edge itself.
The fault could also involve the associated cabling, connections, wireless transmitter or receiver, or the input to the door control system.
This is why the cause should be identified before individual parts are replaced, particularly where there is no visible damage to the safety edge.
Testing should confirm that the safety edge is in good condition and that the door responds correctly when the device is activated.
Checks may include:
Because the safety edge is part of a powered door’s safety system, faults or inconsistent operation should be investigated by a competent engineer rather than relying on trial-and-error replacement.
BID Group provides industrial door servicing and repairs, including inspection and diagnosis of faults affecting powered door systems.
If the safety edge is visibly damaged, operates inconsistently or the door does not respond as expected when it is activated, the door should be professionally inspected.
The problem may be with the safety edge itself or another part of the safety or control system, so identifying the actual cause is important before any components are repaired or replaced.
Contact BID Group if your high speed door is showing signs of a safety-edge fault.
No. A safety edge is one part of the wider safety system around a powered door.
The complete installation may use other safety devices and needs to be considered in relation to the way the door operates and the environment around it.
For a wider look at powered-door safety and compliance, read High Speed Door Safety Standards.
If your high speed door is reversing unexpectedly, failing to close or showing signs of safety-edge damage, BID Group can inspect the door and identify whether the fault is with the safety edge or another part of the system.
A safety edge detects contact with an obstruction while the door is closing and sends a signal to the controls so the door can stop or reverse.
It is typically fitted along the bottom or leading edge of the moving door, where it can respond if the door makes contact with an obstruction.
It can do either, depending on how the door and its controls have been configured. In many systems, activating the safety edge causes the closing movement to stop or reverse.
Unexpected reversing can be caused by a problem with the safety edge, but it may also involve cabling, connections, wireless components or the door control system. The cause should be properly diagnosed before parts are replaced.
Testing involves checking the condition of the edge and confirming that activating it produces the correct response from the door. Associated cables or wireless components may also need to be inspected.
It depends on the fault. Some problems may involve connections or associated components, while physical damage to the sensing edge itself may require replacement. An engineer can determine the appropriate repair.
No. A safety edge is a contact device that activates when the moving door meets an obstruction. A photocell can detect an obstruction before physical contact occurs.
If the safety edge is not working correctly, arrange for the door to be professionally inspected before returning it to normal automatic operation. Because the safety edge forms part of the door’s safety system, unexplained or inconsistent operation should not be ignored.
