Siemens SIDOOR AT40 System Manual page 40

Mechanical door energy
● Mechanical energy for a complete opening travel.
● Mechanical energy for a complete closing travel.
● Mechanical energy within the slow start distance in the opening direction.
● Mechanical energy within the slow end distance in the closing direction.
The mechanical energy required for opening and closing the door is measured for each door
travel.
If the measured mechanical energy increases over time, this can be a sign of mechanical
problems, contamination or wear.
The mechanical energy is only measured in normal operation for uninterrupted travel. No
mechanical energy is provided during initial operation or the learn run, or during reversing,
obstructions or braking due to a previous obstruction. The value zero is returned for the
mechanical energy in this case.
The energy measurement begins when the door has moved 5 mm from the opened or
closed position and ends 5 mm before the end stop.
In the slow end distance, the door interlock (slow distance) is activated, the door is closed
mechanically. In order to distinguish between the mechanical energy for the door travel and
the mechanical energy for the actuation of the door interlock mechanism, the mechanical
energy are determined for the complete opening or closing operation (travel with a slow start
or end distance) and the mechanical energy in the slow distances.
Application example:
After the elevator door has been opened and closed on one floor, the mechanical energy for
the opening and closing travel can be queried.
If the value zero is read for the energy, this measurement must be ignored and only the next
complete opening or closing movement on this floor must be taken into account.
The measured mechanical energy values can be compared with a reference value. If a
permissible tolerance is exceeded, this can indicate a mechanical problem in the slow start
or slow end mechanics.
Door control units SIDOOR AT40 and ATD400V for elevators
System Manual, 06/2018, A5E42192709-AC
SIDOOR functions
3.3 Extended functions
39