Cervis TM70 Manual do Utilizador descarregar pdf (Página 6)

Technical Assistance Services (01/08) 3

Every country has legislated certain frequency bands for the use of the different

applications.

In Spain, there are two bands for the use of remote controls via radio. The IKUSI units

work on the bands of 433 Mhz and 800 Mhz.

Band of 433 Mhz (433,050 to 434,775Mhz)

Band of 800 Mhz (869,70625 to 869,98125Mhz)

2.7.- FREQUENCY

This is the channel of frequency, within the legal bands on which the unit operates. There

are different work channels; each work channel is the equivalent of a frequency. For a receiver to

detect its transmitter, the two must work on the same channel.

When in an installation, there are two units with the same frequency, these may interfere

with each other, causing losses of connection to one another and with them, stopping of the

movements of the crane. When there are two units with the same frequency they can interfere with

each other, but they will never act on the other crane.

It is recommended that the units that work on tower cranes, construction, have selected the

scanning option in starting up. It causes the receiver to make a frequency sweep of the

frequencies in the zone that are free and work on one of them. The construction units are

manufactured with this option activated.

The industry units, as always, are installed in the plant itself; they do not change

frequencies on starting up. To avoid interferences, each user must at all times have a list of the

units owned with their work frequencies and check that they do not have units that are working at

the same frequency.

The change of frequency must be made only when we are sure that there are two units in

an installation with the same frequency. It must be pointed out that if a unit breaks down it is not

repaired by changing the frequency. All frequency changes must be communicated to the user so

as to register them in his unit list.

2.8.- THE ID

This is a unit code which every unit possesses. There cannot exist two units of the same

model with the same ID in different applications.

The ID code is a safety measure. For a transmitter to control a receiver, in addition to

working on the same frequency channel of the receiver, it must send it, with the burst of data, the

same ID code that the receiver possesses.

When on an installation, there are two units with the same frequency, these can interfere

with one another, causing losses of connection and with this, stopping of the movements of the

crane. As in order for a receiver to begin operation, in addition to receiving a signal with its

frequency channel, it must receive, in the signal, its identification code, it is ensured that when

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Cervis TM70 Manual do Utilizador Página 6