Siemens SIDOOR AT40 System Manual page 82

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 136)). The value of the parameter must
be selected so that the slow start distance is overcome in the closing direction.
Door control units SIDOOR AT40 and ATD400V for elevators
System Manual, 06/2018, A5E42192709-AC
WARNING
4.7 Operating and parameterizing controllers
Controllers
81