Telcoma Automations T224, Handbook

Page: 40 / 76

GB
40
INSTALLATION
BATTERY CHARGER CB24 (optional)
ELECTRICAL CONNECTIONS
The equipment must be installed "PROFESSIONALLY" by personnel with qualifications as envisaged by current legislation and in compliance with the
standards EN 12453 and EN 12445 governing safety of the automation.
- Ensure that the automation is equipped with end stops and that these are correctly sized to suit the overall weight of the gate.
- Fix the control unit on a flat and immobile surface, suitably protected against the risk of impact and flooding.
For connections, refer to table 1 and figure 2.
In the case of existing systems a general check should be made of the condition of wiring (section, insulation, contacts) and auxiliary equipment
(photocells, receivers, pushbutton panels, key-operated switches etc.).
Anumber of recommendations for a correct electrical installation are listed below:
- wiring entering the sealed box of the control unit must maintain, when possible, the initial protection rating of IP56.
- The section of the cables must be calculated on the basis of their length and maximum current.
- Do not use a single “multi-pole” type cable for all connections (line, motors, controls etc.) or in common with other equipment.
- Divide the system into at least two sections, for example:
1) power section (power supply line, motors, flashing light, courtesy light, electric lock) minimum wire section 1.5 mm2 (motor line 2.5mm2).
2) signal section (controls, safety contacts, auxiliary power supply) minimum wire section 0.75 mm2
- When very long control cables are used (over 50 metres) decoupling is recommended by means of relays installed in the vicinity of the control unit.
- All N.C. inputs (normally closed) not used in the control unit must be shorted with the common.
- All N.C. contacts associated with the same input must be connected in series.
- All N.O. contacts (normally open) associated with the same input must be connected in parallel.
- For the control unit power supply, the INSERTION OF AN EXTERNAL DISCONNECT SWITCH (not supplied) is envisaged, which must be
independent and sized according to the load.
A system with the T224 can also operate in the event of a power failure, by the insertion of two 12V 2.2Ah rechargeable batteries (not supplied) and a
battery charger model CB24, all without modifications to the rest of the system.
It is recommended, in the case of new systems, to connect the battery and battery charger after testing, observing figure 2 and taking special care to
observe wire polarity.
Connection sequence:
- shut off the 230V power supply
- connect terminals 3 and 4 of the CB24 to terminals 28 and 29 of the control unit T224.
- connect the 2 batteries (in series) with the wires supplied to terminals 1 and 2 of the battery charger.
- ensure that the control unit is powered correctly.
- restore the 230V power supply
- New batteries reach full charge status after approx. 10 hours.
- The number of possible manoeuvres when battery-operated depends on many factors;
as a guideline, around 4 complete cycles are possible in the following conditions:
- gates of 150Kg per leaf
- system with 2 pairs of photocells, plug-in receiver and 1 flashing light (20W max.)
- batteries fully charged
- within 5 hours of failure of the 230V power line
- The control unit slows down the flashing status of the flashing light output in the following condition: battery operation with 230V power
failure.