- 8 - - 9 -
4.0 TECHNICAL DESCRIPTION ZBK241 UL
Caution:
- the opening of the release hatch hinders the motor’s
operation.
- before intervening inside the device, cut off power
and disconnect the batteries (if present).
The control board is powered on terminals L and N protected in
input with a 3A 250V fuse.
The control devices are low voltage (24V) and protected with a
2A 250V fuse.
The overall rated power of the 24V accessories must not exceed
40 W (1,6 A)
The work time is set at 90 seconds.
SECONDARY TYPE SAFETY SYSTEM (TYPE B1;B2)
- The photoelectric cells (non contact device) or edge (contact
device) may be connected and pre-set for:
Re-opening: during closure (2-C1): during the closing cycle if
the device detects an obstruction, it causes the gate to reverse
direction to the full open position.
Re-closing: during opening (2-C2): during the closing cycle if
the device detects an obstruction, it causes the gate to reverse
direction to the full close position.
- Partial stop: (2-C3), stop of the gate if moving, with subsequent
timer activation for automatic closing (if dip 1 is ON).
- Total stop: (1-2), gate stop, excluding any automatic closing
cycle; to resume movement, you must use the pushbutton panel
or radio-control;
NOTE: if a safety N.C. contact (2-C1, 2-C2, 2-C3, 1-2) opens,
this is indicated by the ashing of the signalling LED (see page
9 component 11);
Obstacle presence detection:
With the motor at end of limit (gate closed, open or after a total
stop command), this hinders any movement if the safety devices
(e.g. photoelectric cells) detect an obstacle (DIP 5)
Safety test function:
At every opening and closure command, the control unit checks
the efciency of the photoelectric cells (DIP 10)
INHERENT ENTRAPMENT SENSING SYSTEM (TYPE A)
Upon sensing an obstruction before reaching the full open or
closed position the unit stops and initiates the reversal of the
gate to the maximum full open or close position.
Upon sensing a second consecutive obstruction the unit stops
and the alarm system will signal for 5 minutes. Within the 5-
minute period of alarm activation, the unit requires a renewed
intended input by activating a manual wired control (push button
or key switch) connected to terminals 1-2 AND an input from
a manual wired control (push button or key switch) connected
to terminals 7-2, both intended to be located in the line of sight
the gate. The unit can also be powered off to return to normal
operation condition. All other inputs, from radio controls, cards,
photocells, loop detectors, etc, are disabled.
After the 5-minute period of alarm activation, the unit requires
a renewed intended input by activating a manual wired control
(push button or key switch) connected to terminals 7-2, intended
to be located in the line of sight the gate. All other inputs from
radio controls, cards, photocells, loop detectors are disabled.
OTHER SELECTABLE FUNCTIONS
Automatic closure:
The automatic closure timer self-powers at the opening end stop.
The changeable set time is also subject to modications due to
the intervention of possible safety accessories. This does not
happen following a complete “stop” command or in the event
of a power cut.
“Maintained Action” function:
Gate operation, keeping the pushbutton pressed (excludes the
radio-control operation);
Partial opening:
Gate opening activated by connecting the 2-3P terminals and
is adjustable by the AP.PARZ. trimmer.
With this function, the automatic closing can vary in the following
way:
1) DIP 1 set to ON “automatic closing active”:
After a partial opening, the closure time is set at 8 seconds.
2) DIP 1 set to OFF “automatic closing”:
If the TCA trimmer is set to the minimum after a partial opening,
the automatic closure count does not start.
If the TCA trimmer is set to the maximum after a partial opening,
the closure time is set at 8 seconds.
3) If during “partial opening”:
The device connected to terminals 2-C3 intervenes, the closure
time automatic is set at 8 seconds.
Pre-ashing of 5 seconds:
Both during opening and closing;
POWER green always on indicates voltage present
PROG.
red
- it ashes during the timing of the automatic closing
indicates failed test photoelectric cell;
- ashes when a contact of safety (N.C) is opened;
- it ashes while programming the radio code;
- it ashes when the system enters in alarm
C1 yellow comes on when contact 2-C1 is open
C2 yellow comes on when contact 2-C2 is open
C3 yellow comes on when contact 2-C3 is open
STOP yellow comes on when contact 1-2 is open