S
ervice Manual
Remote Control Cable/Radio
574
7.
S
hort Description
The equipment consists of a portable transmitter, a
receiver built into the machine, and a charger device for
the rechargeable transmitter battery.
Depending on the type of machine, the equipment can
be supplied either in the proportional control version or
in the pulse control version (black-and-white control).
All the control commands transmitted are safety-
coated in the transmitter so that only the pertaining
receiver responds to the signals.
The safety code is an individual code which does not
repeat itself.
Other transmitters, and also those of a different design,
will not cause the receiver to accept command signals.
The receiver checks the input signal, passing it on to
the machine control unit only if it is correct and
complete.
The channel switching of the radio equipment supplied
permits the simultaneous and interference-free
operation of several FW-20 units.
The transmitting and receiving frequencies of the unit
are selected in such a way that interference from other
radio services is virtually excluded. Moreover, the
transmitter is designed for operation with two different
transmitting frequencies.
Frequency switching in the receiver is fully automatic.
In case of interference in spite of these features, the
equipment automatically switches over to the safe
EMERGENCY SHUT-OFF state.
The transmitting range is limited to an area from which
the machine can be clearly seen.
A power-saving feature automatically switches the
transmitter off during work interruptions in order to
save battery power.
The equipment bears the type-approval mark of the
Deutsche Bundespost (German Telecommunications
Authority), is approved for use by the general public,
and is not subject to registration or to licence fees.
Home
