4.2.7 Automatic energy limitation
Function description
SIDOOR control units have a system that automatically limits the kinetic energy in the closing 
direction. 
WARNING
Risk of injury due to moving mechanical parts
After the door drive has been commissioned in the complete system, arrange for the forces and 
energies to be checked by the service personnel, and adjusted if they exceed their limit values. 
Take the standards and directives valid for the respective application as well as the following 
specications into account:
• The drive is suitable for use with power-operated isolating guards in accordance with EN ISO 
14120:2015, section 5.2.5.4.
• In the factory state, the force and energy limitation parameters in the opening/closing 
direction are 4 J and 75 N. Subject to a safety assessment of the overall system and with the 
reversing function activated (automatic reopening of guard) these parameters can be 
increased in accordance with the standard up to a maximum of 10 J and 150 N.
• If an additional protective device is used (e.g. an ESPE or pressure sensitive edge), the force 
and energy limitation parameters may also be set beyond this, depending on the 
application.
SIDOOR ATD4xxW control units include a system that automatically limits the kinetic energy in 
the opening and closing directions. 
The values for the energy limit are determined via the parameter p1202 (in the closing direction) 
or p1203 (in the opening direction) and P1204 (NDG mode). After successfully completing the 
learn run, the speed values of the drive curve parameters p3668, p3664 and p3672 are 
determined according to the mass and congured energy limit are determined and overwritten. 
As of V1.10: If a value greater than 0 is set for parameter p1202 (Energy limit close), p1203 
(Energy limit open) and p1204 (Energy limit NDG), a value greater than 0 is set, the parameters 
p3664 (Maximum speed OPEN), p3668 (Maximum speed CLOSE) and p372 (NDG speed) are 
always permanently set to the speed (v) calculated from the set energy limit (E) and the 
congured mass (m): 
 
If the value 0 is set for the energy limit, the automatic energy limit is switched o and any speed 
within the parameter limits can be selected.
Force and energy proles
See section Force and energy proles (NDG mode) (Page 64).
SIDOOR functions
4.2 System functions
ATD4xxW for industrial applications
System Manual, 06/2022, A5E51901827B AA 73