NICE3000
new
User Manual
3 Mechanical and Electrical Installation
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● The slow-down distances above are calculated on the basis of the default special deceleration rate 0.9
m/s
2
.
● Decreasing the acceleration rate and deceleration rate and increasing the special deceleration rate
does not affect safety. However, decreasing the special deceleration rate may bring safety hazard. If
any change is in need, re-calculate the slow-down distance by using the above formula.
3.4.3 Limit Switches
The up limit switch and down limit switch protect the elevator from over travel top/bottom terminal when the
elevator does not stop at the leveling position of the terminal oor.
●
The up limit switch needs to be installed 30−50 mm away from the top leveling position. The limit
switch acts when the car continues to run upward 30−50 mm from the top leveling position.
●
The down limit switch needs to be installed 30−50 mm away from the bottom leveling position.
The limit switch acts when the car continues to run downward 30−50 mm from the bottom leveling
position.
3.4.4 Final Limit Switches
●
The nal limit switch is to protect the elevator from over travel top/bottom terminal when the
elevator does not stop completely upon passing the up/down limit switch.
●
The up nal limit switch is mounted above the up limit switch. It is usually 150 mm away from the
top leveling position.
●
The down nal limit switch is mounted below the down limit switch. It is usually 150 mm away
from the bottom leveling position.
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