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Adjusting the “Cigar” Magnet Sensors
There are two black “Cigar Sensors” installed on each side of the guide rail. Each Monostable and
Bistable sensor is for sensing the Door Zone (DZ) magnets.
The Monostable Sensors (Black) are for reading the Door Zone (DZ1) magnets. These read the 6”
magnets that are doubled up and installed closest to the center web of the guide rail. Version 3
software requires both the DZ1 & DZ2 magnets installed on both sides of the center web of the
guide rail.
The Bistable Sensors (Grey) are for reading the round NTS “Lifesaver” magnets. These sensors
read the magnets mounted on a separate plate that’s bolted to the guide rail. The right side is
for the Up NTS (UT# - Up Terminal Slowdown) magnets and the other side reads the Down NTS
(DT# - Down Terminal Slowdown) magnets.
The DZ1 & DZ2 magnets are installed next to the central protruding part of the guide rail and are
doubled up during installation.
The lifesaver magnets are not doubled up when installed and they’re placed on the NTS mounting
plates attached to the guide rail.
All of the sensors should be installed with no more than ½” distance from the end of the sensor
head to the face of the magnets.
The last thing to check is that the sensors clear the hardware that anchors the guide rail to the
building. Slowly move the car in CT Inspection and verify that the sensors all clear the guide rail
anchoring hardware during entire length of travel.
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