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Rev E Doc 01-20201 9 of 33
HOW IT WORKS:
• When a vehicle is entering or exiting, the inside Master gate opens first. When the Master is
completely open, the outside Slave gate opens, allowing the vehicle to enter or exit.
• The Master unit Reclose Timer (if enabled) does not start counting down until the Slave gate is fully
closed. Since ATG is not allowed in the Master unit, if the Reclose Timer is not enabled, the Master
gate will remain open.
• During high traffic hours, the slower-moving Master gate can be latched open by a continuous
Manual Open input, leaving the faster moving Slave gate to control entering and exiting traffic.
• If a vehicle stalls between the gates and they close, they can be opened by a CYCLE or RADIO
command, or by driving over the Slave unit Inside Interrupt Loop (SLIDE ACTION=ON only).
• A fault in one unit affects both units (For Fault List, see Troubleshooting/Maintenance in Installation
and Operation manual for individual gate operator).
• A continuous FIRE input in either unit opens both gates and holds them open.
• A continuous Manual OPEN in the Slave unit opens both gates and holds them open.
There are 2 different ways to close the gate after entering or exiting:
1. Reclose Timer: When the Reclose Timer expires, the gates close automatically (Slave or Master).
2. ATG (Anti-Tailgate) and Interrupt Loop: When ATG is ON, clearing the Inside or Outside Interrupt
Loop causes the Slave gate to close.
INPUT CONNECTIONS: Refer to Part 2 Master/Slave Layout and Wiring, for more details.
• Barrier Gate: If the installation requires only one Loop Sensor for the Slave gate:
1. Install the Loop Sensor under the barrier gate arm.
2. Connect to the Outside Interrupt Loop input.