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Sematic Drive System
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6 FUNCTIONS AVAILABLE
6.1 Reversing System Force Setting
The reverse motion torque parameter sets the sensitivity degree to detect an obstacle
during the door closure, thus giving the reopening command. The parameter's value can be
manually set.
Please note that a minor sensitivity corresponds to higher values and vice versa. After a
number of operations, such parameter may change due to an automatic adjustment
system.
6.2 Reversing System choice: INTERNAL or EXTERNAL
If the reversing system is INTERNAL, the reopening of the doors due to obstacle detection
is solely controlled by the Door Controller and door reopening is signalled to the main lift
controller through the IM contacts (1, 4 contacts normally closed, 2, 4 contacts normally
open).
If the reversing system is EXTERNAL, the Door Controller signals, through the IM
contacts, the presence of an obstacle to the main lift controller, which in turn must
signal the re-opening command using Ka. IM signal is present up to the complete
reopening of the doors.
If the main lift controller does not give the re-opening signal, the Door Controller
commands a low-speed closure.
6.3 Limited Door Reversal
(Partial door re-opening, controlled by photoelectric barriers with either "Direct" or
"Complete" Connection to the Door Controller; see § 4.1.1 and 4.1.2).
This function allows a partial reopening of the doors when an obstacle has been detected by
means of optoelectronic, traditional or proximity door protection devices.
The doors re-open only for the time during which the obstacle is detected and not necessa-
rily up to the opening limit.
IM signal is sent to the lift controller as long as the obstacle is present.
6.4 Main Lift Controller Test
When set to "OFF" selection (no MAIN LIFT CONTROLLER TEST), a simple impulse of signal
Ka or Kc from the Main Lift Controller is sufficient to produce door movement; the signal is
stored by the Door Controller which will complete the required movement even if the main
lift controller signal fails. The impulse width must be at least 400ms in duration.
When the MAIN LIFT CONTROLLER TEST is set to "WHEN MOVING" (default setting) or set
to " PARKING", the operation is as described in the next two sections.
6.4.1 Main Lift Controller Test (when moving) [default setting]
When this parameter is set to “WHEN MOVING”, the Door Controller checks for the
Ka or Kc signal coming from the main lift controller only during the door movement
(Ka signal during the opening cycle, Kc signal during the closing cycle). At the end
of the movement, which can be detected through the La and Lc signals, respectively
Door Open and Door Closed, it is possible to remove the signal that has controlled
the movement, without the Door Controller detecting this as failure.
For this setting, the main lift controller must be equipped with 2 relays: 1 for the
opening command, and 1 for the closing command.
The Door Controller checks for continuous presence of the Ka and Kc signals coming
from the main lift controller.
The Door Controller detects signal drops exceeding 200ms; this is interpreted as
NO MLC SIGNAL alarm if the relevant parameter MAIN LIFT CONTROLLER TEST
is set on “WHEN MOVING”.
In case of signal failure, the Door Controller acts as described in the parameter
setting NO MLC SIGNAL (see § 6.4.3).