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MANUAL ETS and FINAL LIMIT SWITCHES
ETS Switches
1. The UET and DET are Normally Closed (NC) 24vdc switches.
2. The distance measured from the door zone magnet to the switch
is the same as the ETS magnet placement.
3. Ensure the switch inputs stay low the entire time the car is within
the terminal landing Door Zone.
4. Install both switches so that if the car actuates the final limit switch
the cam will still have the appropriate UET or DET switch actuated.
a. UET: this switch is located at the top terminal landing. It must
be installed within the programmed slowdown distance to
ensure that the controller has already started to slow down by
the time the switch is actuated, or a “UETS Overspeed” fault
can occur.
b. DET: same as UET, but at the bottom terminal landing. This
switch should be placed at a distance measured up from the
center of the bottom terminal landing magnet.
Final Switches
1. The Final Limit switches must be installed in the safety string. Place
the Final switches after the UET and DET switches above (top
terminal) and below (bottom terminal) Door Zone Magnets.
2. The Finals should be installed with a minimum run distance of 3”
from when the terminal DZ magnet Normal Limit is flagged at the
bottom edge of the magnet.
3. Refer to the Final Switch Placement illustrations on the following
pages for tape or beam installations.
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