EMX Loop Wire

EMX Industries Loop Wire Questions and Answers

What is EMX loop wire used for?

EMX loop wire is used to create or support vehicle detection loops for gate openers, barrier gates, parking systems, overhead doors, and access-control equipment. The loop works with a compatible loop detector, which senses the change caused by a vehicle and sends an output signal to the operator or controller.

Is loop wire the same as a loop detector?

No. Loop wire is the field wiring or loop assembly installed in the driveway or lane. The loop detector is the electronic module that reads the loop and provides the relay or signal output to the gate operator, barrier arm, door operator, or access-control system. Both parts must be compatible and installed correctly.

When should I use a saw-cut loop?

A saw-cut loop is commonly used when the loop is being installed in existing concrete or asphalt. A slot is cut into the pavement, the loop wire or preformed loop is installed, and the cut is sealed. Pavement condition, saw-cut depth, corner cuts, loop size, and sealant all affect long-term reliability.

When should I use a direct-burial loop?

A direct-burial loop is commonly used before new asphalt or concrete is placed, or where a below-grade loop can be installed before the final surface is finished. The loop must be protected from grading equipment, sharp aggregate, rebar contact, and damage during paving or construction.

Can EMX loop wire be used for a gate free-exit loop?

Yes, EMX loop products may be used in free-exit applications when matched with the correct loop detector and installed in the proper location. A free-exit loop is normally installed inside the property so a vehicle leaving the site can trigger the gate to open.

Can a loop be used as a gate safety device?

A loop can help detect vehicles and may be used as part of a safety or reversing function, but it should not be treated as a substitute for required monitored entrapment-protection devices. Automatic gate systems must keep required safety devices installed, connected, and functioning according to the operator requirements.

Why does a loop detector show a loop fault?

A loop fault can be caused by a broken loop wire, shorted loop, damaged insulation, water intrusion, a poor splice, loose terminals, damaged lead-in wire, or an installation problem in the pavement. The loop and lead-in wiring should be tested before replacing the detector module.

What loop size should I order?

The correct loop size depends on the lane width, vehicle type, detection purpose, and detector requirements. A passenger vehicle lane, truck lane, barrier gate lane, and wide commercial driveway may require different loop dimensions. Confirm the required loop size before ordering a preformed loop or cutting pavement.

Can I repair damaged loop wire?

Minor damage may sometimes be repaired by a qualified technician using proper splice methods, but many failed loops are replaced because water intrusion, pavement movement, or multiple damaged points can cause repeat failures. If the pavement is cracked or unstable, a loop replacement sensor or new installation method may be a better option.

Do I need a technician to install EMX loop wire?

Many loop installations should be handled by a qualified gate or access-control technician, especially when saw cutting, direct burial, detector setup, operator wiring, or safety-device verification is involved. Incorrect loop installation can cause false detection, missed vehicles, gate hold-open problems, or repeat loop failures.