safety

Gate Automation Safety Guide

Safety devices every automated gate, shutter, door and barrier needs — photocells, safety edges, obstacle detection, lamps, manual release — and how to test them.

· 6 min read · Rollvento Engineering

Automated gates and doors move heavy steel. Every Rollvento operator ships with obstacle detection and a manual release, but a safe installation needs external safety devices placed and tested correctly.

The safety layers

LayerDeviceWhat it does
Prevent contactPhotocellsInfrared beam across the opening; gate stops/reverses when broken
Prevent contactSafety edge / airbagPressure-sensitive edge on the leading stile; stops on touch
Limit forceObstacle detectionBoard senses abnormal load and reverses
WarnWarning lampFlashes before and during movement
RecoverManual releaseKey disengages drive for hand operation
HoldBrake / self-locking gearboxShutter or gate cannot free-fall or be pushed

Placement guidance

Photocells — one pair minimum across the opening, 500–600 mm high. On sliding gates add a second pair inside the run-off zone where the gate retracts, so nobody is trapped between gate and wall. On swing gates place the pair on the side the leaves swing toward.

Safety edges — on the leading edge of sliding gates and on the closing edge of swing leaves where pedestrians pass. Rollvento’s AS01 airbag sensor uses a pneumatic pressure wave, so it needs no wiring in the moving edge itself.

Warning lamp — mounted where it is visible from both approach directions, typically on the pillar at 2 m.

Rolling shutters — pedestrians should never stand under a moving curtain. Fit photocells across the opening and keep the manual chain reachable but clear of the curtain path.

Boom barriers — a loop detector or photocell on the safety side stops the boom lowering on a vehicle. Provide a separate pedestrian gate; people should not pass under a boom.

Commissioning tests

  1. Photocell test — break each beam during closing; the gate must stop and reverse.
  2. Obstacle test — hold the gate gently during travel; it must stop and reverse without excessive force. Adjust board sensitivity if it pushes through.
  3. Limit test — run full open and full close cycles; the gate stops at the mechanical stops without hammering.
  4. Manual release test — isolate power, release, move the gate by hand, re-engage.
  5. Power-cut test (DC with battery) — isolate mains and confirm the gate runs on battery.
  6. Auto-close test — confirm the gate does not auto-close while the beam is broken.

Owner checklist

  • Keep photocell lenses clean; a dirty lens can make the gate refuse to close.
  • Keep the track (sliding) clear of stones and leaves.
  • Do not add weight (sheets, signage) to a gate without re-checking the motor rating.
  • Report any change in sound, speed or reversing behaviour to the installer.

Rollvento provides wiring diagrams and commissioning support to installers through technical support. Safety accessories are listed under safety sensors and alarm lamps.

Frequently asked questions

Where should gate photocells be mounted?

In a facing pair on either side of the opening, at 500–600 mm above ground so the beam is broken by a vehicle bumper, a child or a pet, and positioned so the moving leaf never crosses the beam during normal travel.

Is built-in obstacle detection enough?

No. Obstacle detection reacts after contact. Photocells and safety edges prevent contact. Use obstacle detection as the last line, not the first.

How often should an automatic gate be tested?

Test photocells and obstacle reversal monthly by breaking the beam and stopping the gate by hand at low force. Have the installer service the operator and check rack or bracket alignment yearly.

How can we help you?

Tell us what you need to automate — opening size, weight and site — and an engineer will recommend the right model and send a quotation.

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