External Closing Force - Siemens SIDOOR AT40 System Manual

After the release time has expired and a "DOOR CLOSE" command is active, the door closes with
the values set in the parameters "Nudge speed CLOSE" and "Static nudge force CLOSE". If the
door is blocked again for at least 1 second during this closing operation, the motor is
deenergized again for the duration of the release time.
After the CLOSE position is reached or a "DOOR OPEN" command is given, the door closes with
the normal drive profile again in the next closing movement and thus with the values set in the
"Maximum speed CLOSE" and "Limit force close" parameters.
Initial mode:
If at an active command "DOOR CLOSE" the door is pressed by at least 5 mm from the blocking
position in the opening direction, the motor is deenergized for the duration of the release time.
After the release time has expired, the door closes with the parameterized "Slow speed close
initial" and "Static nudge force CLOSE".
In order to allow release with a force below 300 N, the door and closing mechanisms have
to be designed and set correspondingly.
The parameter "Idle torque (power) CLOSE" has to be set, depending on the closing
mechanism, counterweight and door friction, so that manual opening of the door
(release) at an active "DOOR CLOSE" command is possible with a force lower than 300 N.
The emergency release function is only active in the CLOSED position at an active "DOOR
CLOSE" command or the parameter "Idle torque without door command" has the value
"ON".
4.2.7

External closing force

Description of function
Closing mechanisms in the form of a counterweight or a spring are permissible for a particular
system.
You will find the permissible counterweights in Section Technical specifications (Page 80).
Risk of injury due to moving mechanical parts
Make sure that with an additional external closing force the sum of external closing force and
force set in the controller does not exceed the maximum force limit of 150 N (according to EN
81).
Check the final application-specific limit values and adjust the limit values accordingly.
AT40 and ATD400V for elevators
System Manual, 06/2022, A5E42192709-AH
WARNING
WARNING
SIDOOR functions
4.2 System functions
53