Key Automation 900CT-24SU Manuel D'emploi page 16

Operation of the electronic clutch
Very important device in terms of safety. Its calibration is constant over time without being subject to wear
like normal mechanical clutches. You can adjust its power using the POWER trimmer, turn clockwise + to
increase thrust power and counter-clockwise - to decrease it
A. It is active both during opening and closing. When it intervenes it reverses the direction without disabling
automatic closure if it was activated.
B. If it intervenes two consecutive times, it will be placed automatically in the STOP position. This will disable
automatic closing if it has been activated. If it intervenes twice consecutively, it means that there is a
permanent obstacle and any movement could be dangerous. The user must now give the open or close
command.
C. If it intervenes three consecutive times, the control unit performs an emergency procedure in which it will
perform a complete opening until it reaches the stop, and then it will close again automatically if automatic
closing is activated. In this way, if contact was lost with the stops, re-synchronization would take place
automatically.
N.B. If you select operation only with the encoder ( dip4=ON ) based on the point of maximum contact for
opening in normal operation, the control unit will stop the door a few cm in before, to keep it from striking the
mechanical stop which MUST be installed.
Step Operation: Connection between Term.N.11 P/P and term. N.15 Contact N.O.
This is an opening command which can operate in two different ways:
Dip 1 = OFF An Open impulse, a Stop impulse, a Close impulse
Dip 1 = ON Accepts Open impulse, during movement does not accept any command, only during closing
accepts the command, changing direction and returning to opening mode
Connection Open/Partial: Connected between Term. N.12 PAR and Term. N.15 COM Contact N.O. Normally
Open This is a command that will cause 40% opening of the learned travel
Photocell Function: Connected between Term. N.13 and Term. N.15 COM Contact Normally Open N.C. This
input is considered a safety. The contact can be interrupted at any time during opening or closing of the
automation as follows:
DIP 2 = OFF it is active only during closing and will cause re-opening
DIP 2 = ON it is also active during opening, when the zone is interrupted in stops the motor, as soon as the
zone is restored opening continues
STOP function: Connected between Term. N.14 STP and Term. N.15 COM Contact Normally Open N.C.
This input is considered a safety the contact can be interrupted at any time immediately stopping the
automation disabling any function including automatic closing.
PHOTO-TEST function: Ter.N.17 used to connect the POSITIVE power supply of the devices where photo
test is to be performed Dip 6 = ON , at each opening controls operation of device
Accessories power supply Term.N. 15 - NEGATIVE power supply Term.N 16 + POSITIVE power supply
Power supplies are connected of accessories protected with a fuse F2 of 0.5 A. Rit. The maximum power
available is 0.5 A.
CN1 24V AC: The wires are connected that come from the transformer where it is possible to measure 22 V
AC protected by Fuse F1 8A. Delayed with connector with snap-in stay
Connector 11: The battery charger is connected with an optional CABAT battery charger and is connected to
the 4-pole snap-in connector. Operation on backup battery is activated as soon as the mains power supply is
interrupted
Connector 6: used for snap-in connection of the KEY AUTOMATION receiver the antenna input is located
on connector 7
N.B. The OPEN INDICATOR LIGHT can be connected between Ter.N.7 and N.10 COM with Max. Pwr.
3W
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