How to Plan an Entrance Automation System for Your Site
Most entrance problems are planning problems. The wrong sensor, an opening 200 mm too narrow, or a gate motor sized for a lighter leaf, all settled long before anyone switched the power on.
This guide works through an entrance automation system from first measurement to service contract, covering pedestrian doors, vehicle gates and industrial openings on the same site.
Key Points
- Fix the opening and the traffic first, then choose hardware
- Pedestrian and vehicle entrances need different safety devices
- Accessible routes in India need 900 mm of clear width
- Power quality and dust cause most callouts on Indian sites
- Agree the service contract before the order, not after
What Is An Entrance Automation System?
An entrance automation system is an opening plus a drive unit, a controller, detection sensors and a safety chain that together move a door, gate or shutter without anyone touching it. Access control sits on top of that chain rather than replacing it.
Five layers make up any automated opening, and they fail in roughly that order of frequency.
- Detection: radar, infrared, induction loops or a push plate that requests an opening
- Authorisation: card, fob, biometric or mobile credential, on controlled entrances only
- Control: the board that decides speed, hold-open time and operating mode
- Drive: motor, belt or rack, sized to the leaf weight and the duty cycle
- Safety: presence detection, safety edges, obstacle reversal and backup power
Treat the safety layer as non-negotiable. It is the cheapest part of the package and the only one that has to work when everything else has failed.
It helps to know what the term does not cover. Automation moves the opening; it does not decide who may pass, and it does not make an entrance secure on its own. Those jobs belong to access control and to the physical barrier itself, specified alongside rather than assumed.
Which Types Of Automatic Doors And Gates Fit Which Openings?
Different openings on one site want different mechanisms, which is why a single entrance automation system usually means several product families working to one specification. Match the mechanism to the opening, the traffic and the environment before anyone talks about finishes.
| Opening | Usual mechanism | Suits | Watch out for |
| Lobby or retail front | Bi-parting sliding leaves | Two-way pedestrian flow | Side screens eat wall width |
| Hospital corridor | Hermetic or break-out leaves | Hygiene and escape duty | Pressure regime designed first |
| Internal factory opening | High speed fabric or spiral door | Forklift traffic, climate zones | Needs impact-tolerant guides |
| Loading bay | Motorised rolling shutter | Security when closed | Slow cycle, poor sealing |
| Site perimeter | Cantilever gate on a drive unit | Wide spans, rough ground | Counterbalance needs storage room |
| Secure side entrance | Swing operator on a metal leaf | Low traffic, retrofit | Swing arc blocks the corridor |
| Cleanroom or lab door | Hermetic sliding leaf | Pressure-controlled areas | Seals need scheduled replacement |
The range of automatic sliding doors we build covers eight pedestrian configurations alone, and the same site may also need industrial openings that share nothing with them mechanically.
Vehicle entrances deserve separate thought. Automatic gate systems carry far more mass than any pedestrian door, travel further, and sit outdoors through the monsoon, so their failure modes and their safety devices are different.
Mixed sites are the norm rather than the exception. A logistics park may run glass entrances at the office block, high speed doors between production halls, shutters on the loading bays and a cantilever gate at the boundary, all commissioned in the same fortnight by the same team.
What Sensors And Safety Interlocks Does The System Need?
Every entrance automation system needs two detection jobs done separately: something that requests the opening, and something that stops a closing leaf from touching a person. One device rarely does both well, and combining them is where cheap packages cut corners.
Pedestrian entrances and vehicle entrances need different kits.
- Pedestrian: microwave radar to activate, active infrared across the threshold, safety beams at the leading edge
- Vehicle: induction loops in the road slab, photocells across the opening, a safety edge on the leading rail
- Both: obstacle detection that reverses the leaf, and a mode selector for night, partial and hold-open settings
- Both: battery backup that drives the opening to a defined safe position when supply drops
Indian sites add two failure modes that catalogues rarely mention. Dust settles on infrared lenses within weeks, and voltage swings reset controllers, so specify IP-rated sensor housings and put a stabiliser on the door circuit.
Commissioning decides whether any of this works. Detection fields have to be walked and trimmed on site, at real approach angles, with the final floor laid. Polished stone reflects infrared differently from matt tile, and a field set in an empty shell behaves differently once furniture arrives.
What Does Accessibility Require At A Building Entrance?
Accessible design is a specification input, not a finishing touch. The Government of India’s Harmonised Guidelines for Universal Accessibility set 900 mm as the minimum clear width for circulation areas including doors, and list level entrances, easy door operation and adequate manoeuvring space among the core requirements.
An entrance automation system is judged on clear width, not on the structural opening it sits in. Side screens, leaf overlap and frame rebates all take their cut before anyone walks through.
- Level thresholds, ideally flush, with any upstand kept very low
- Enough flat landing on both sides for a wheelchair to turn and wait
- Power operation, which removes push force from the user entirely
- Controls and readers mounted within seated reach, not at standing height
Hospitals push these numbers further. A bed with a drip stand attached needs more width than a wheelchair, and it arrives at an angle.
Retrofits are where accessibility quietly gets lost. Widening a structural opening is expensive, so the temptation is to accept whatever clear width the existing frame allows. A telescopic arrangement recovers roughly a third more opening from the same structural width and is usually cheaper than cutting the wall.
How Do You Plan The Project Step By Step?
Planning entrance automation for commercial buildings runs in a fixed order, and change orders almost always trace back to skipping a step. Survey, classify, size, then specify. Finishes come last.
- Survey every opening. Structural dimensions, header depth, floor levels both sides, and the wall or structure above.
- Classify each one. Escape route, hygiene-critical, climate-controlled, vehicle or general access. This decides more than any other input.
- Count traffic honestly. Peak-hour footfall or vehicle movements, not the daily average, which hides the load that wears hardware out.
- Size the drive to leaf weight and duty cycle, with headroom. Undersized motors on wide gates are the most common single error.
- Specify the safety chain device by device, then mark sensor positions on a plan drawing.
- Fix the finishes once the mechanism is settled, so glass and cladding never compromise clearances.
Two drawings decide how handover goes. A dimensioned shop drawing showing clear opening, header depth and screen widths, and a plan marked with every sensor position. Approve both before fabrication and most site arguments disappear before they start.
For industrial openings, our high speed doors for factories and cold storage run on a different sizing logic to pedestrian entrances, so survey those separately rather than assuming one supplier spec covers everything.
What Does The System Cost To Run Each Year?
Running an entrance automation system costs money in three places: scheduled servicing, consumables, and the downtime you pay for when neither happens. A planned visit costs a fraction of an emergency callout, and most callouts trace back to a skipped adjustment.
| Item | Typical interval | Why it matters |
| Scheduled service | 2 to 4 visits a year | Catches alignment drift before it becomes a fault |
| Backup battery | 2 to 3 years | Fails silently, so nobody knows until the power cuts |
| Sensor lens cleaning | Every visit | Dust is the single largest cause of nuisance tripping |
| Belt, chain or rack | 3 to 7 years by duty | Worn drive parts damage the leaf and the track |
Design for service too. A header that needs scaffolding to open converts a short adjustment into a half-day shutdown, every year, for the life of the building.
Downtime is the cost nobody budgets. A blocked loading bay stalls dispatch, and a jammed lobby door on a Monday morning greets every visitor before reception does. Both are cheaper to prevent than to explain.
Keep the commissioning report, the sensor plan and the controller settings in the building file. A technician who has never seen the site can then finish in minutes what would otherwise take a day of trial and error.
Quote maintenance and after-sales support alongside the supply while you still have commercial leverage, rather than after the first breakdown.
Frequently Asked Questions
Can existing doors and gates be automated?
Often yes. Swing operators drive existing hinged leaves, and many manual gates accept a drive unit, though the frame, rollers and posts have to be checked for the added load.
How long does installation take on site?
A single pedestrian entrance is usually a day or two once the opening is ready. Wide vehicle gates take longer because foundations, conduit and loop cutting all need curing or coordination time.
Do automated entrances work during a power cut?
With battery backup, yes. A well-designed entrance automation system drives to a defined safe position and can be operated manually once the backup is exhausted.
Can access control be added later?
Yes, if the controller supports it and conduit was laid at first fit. Retrofitting cable into a finished lobby is what makes later additions expensive.
Which openings need break-out or fail-safe operation?
Any opening on a designated escape route. These must release under hand pressure or fail to the open position when the fire alarm signals.
How many suppliers should one site use?
Fewer is simpler. A single supplier across pedestrian, industrial and perimeter openings keeps one service contract and one point of accountability.
Where Should You Start?
Start with a measured survey and a classified list of openings. That single document turns a vague brief into something an engineer can price without guessing, and it usually shortens the procurement cycle by weeks.
Send us the drawings and we will mark up a workable specification for every opening, or book a site visit with our engineers if the building is already standing.
You can also browse the entrance automation systems we design, supply and install for projects across India.