Siemens SIDOOR ATD401W System Manual page 68

SIDOOR functions
3.3 Extended functions
Prerequisites for AssistedDrive
AssistedDrive detection is only active during the following internal system states:
● Initial mode (closing, closed, opening and open)
● Normal mode (closing, partial closure, closed, opening, partial opening and open)
● Slow drive profile (DCMD – expansion bit "slow", see Table A-17 DCMD expansion bits
(Page 288))
If the system switches into one of the three system states, the signal ASDrv is always set to
active. The actual threshold analysis of the motor current starts after the parameterized
switch-off delay (p1230) and as soon as the value of the square of the difference between
the setpoint and actual speeds falls below 70 mm/s.
The result of the analysis is output by the signal state ASDrv. The falling signal edge
therefore indicates that the assisting force has become too low. Assisted mode can be
exited. This signal is independent of the drive direction.
Note
The falling edge of the ASDRV signal can only be reached when the difference between the
setpoint and actual speeds falls below the defined value. Therefore a speed and/or force
adjustment of the system may be required.
68
ATD4xxW Door Controller for Industrial Applications
System Manual, 01/2017, A5E38080677-AB