Functions and device responses
5.10 Closing force
Elevator door drive AT12
18 Manual, 02/2012, A2B00086683A-04
5.10 Closing force
The closing force can be set between 70 N and 120 N.
Note
The resulting clos
ing force must be checked by a suitable measuring method, and must not
exceed 150 N.
WARNING
When the closing force is set, it is imperative that any effective
closing weight is taken into account.
The desired closing force must be reduced by 10 N for each 1 kg of counterweight.
This concerns the:
• Closing force
"CLOSE"
• Closing force
"Cam distance CLOSE"
• Nudge force
"CLOSE"
Example:
Closing weight = 4 kg
Desired static force limit "CLOSE" = 150 N
The counterweight of 4 kg corresponds to a force of 40 N. The force limit then has to be
adjusted to 150 N - 40 N = 110 N.
The factory setting is designed to take into account a counterweight of 4 kg. This means
that the resulting static closing force is limited to 110 N.
5.11 Emergency release
WARNING
An emergency release can only be actuated if:
• Neither a DOOR OPEN nor a DOOR CLOSE command is present
• the learn run button is not pressed,
• The Service Tool or Software Kit are not in the menu item Quick adjustment or Total
adjustment or one of their sub-menus
• The door has come to a standstill
The door drive is only torque-free if these conditions are fulfilled. According to TRA
(German Technical Rules for Elevators) and EN 81, the force required to open the door
must be less than 300 N.
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