Siemens SIDOOR AT40 System Manual page 100

Controllers
5.7 Operating and parameterizing controllers
A warning appears on the digital display of the terminal module if the set closing force of 150 N
is exceeded. The stated values refer to doors opening to one side. A load cell in the middle of
centrally opening doors would show only half the value.
Risk of injury and material damage due to excessive closing force of the door
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 affects
the:
• Limit force close
• Limit force slow start close distance
• 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 settings are pre-configured for the following counterweights:
The resulting static closing force for the enabled motors is preset in the default profiles to 70 N,
90 N or 110 N depending on the motor.
Limit force end close
This force serves to overcome the slow start distance in the closing direction.
A higher force is often required to overcome the low start distance than for the rest of the
distance the door travels.
This parameter is in effect in the closing direction when the door is within the slow start distance.
Adjustment ranges
The parameter can be adjusted in accordance with the adjustment ranges of the parameters (see
section Profiles and adjustment ranges (Page 169)). The value of the parameter must be selected
so that the slow start distance is overcome in the closing direction.
Risk of injury due to excessive closing force of the door
The door must be closed completely within the slow end distance in the closing direction. The
driving curve parameter "Cutter distance CLOSE" must be checked and set accordingly.
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WARNING
WARNING
AT40 and ATD400V for elevators
System Manual, 06/2022, A5E42192709-AH