Reversing (Retraction Attempt) - Siemens SIDOOR ATD401W System Manual

Parameter assignment
The number of retries to overcome the obstruction can be set in parameter p3860 or p3877.
If the number is set to "0", the overcome obstruction system is disabled in the corresponding
direction.
A variable waiting time can be configured before each retry (p3861 or p3878).
The type of drive control during this wait time can be "stop" or "deenergize" (p3862 or
p3879).
After the configured number of retries have been made, wait mode is activated (see the
following Section "Wait mode"). A following drive order can also be configured, which is
activated at the same time as the switch to wait mode (p3863 or p3880).
While the retry system is active, any external change to a drive order (see Table A-16 DCMD
signal (Page 287)) immediately ends all open retry actions (including the cancelation of wait
mode).
3.3.8.3

Reversing (Retraction attempt)

When an obstruction is detected, the obstruction reversing system can be used to initiate an
immediate full or partial reverse - a retraction attempt. This system is simply termed
"reverse". The system remains active as long as the initial drive order is not actively
changed. You can find an example of this in Section Overcome obstruction (Page 72).
Parameter assignment
The number of reversals (retraction attempts) can be defined in parameters p3864 and
p3881. If the number is set to "0", the obstruction reversing system is disabled in the
corresponding direction.
A variable wait time can be configured (p3865 and p3882) after each retraction attempt (on
reaching the corresponding reverse target position). The drive remains stopped during the
wait time.
The reversing distance or the type of reverse (full or partial reverse) can be configured to an
accuracy of ±2 cm in parameters p3866 and p3883.
If the system is obstructed while reversing, all still open reversing actions are immediately
ended, and wait mode is activated (see Wait mode (Page 74)). A following drive order can
also be configured in parameters p3867 and p3884, which is activated at the same time as
the switch to wait mode.
After the configured number of reversing operations/retraction attempts have been made,
wait mode is activated (see Wait mode (Page 74)). A following drive order can also be
configured, which is activated at the same time as the switch to wait mode (p3868 and
p3885).
ATD4xxW Door Controller for Industrial Applications
System Manual, 01/2017, A5E38080677-AB
SIDOOR functions
3.3 Extended functions
73