18
than 4 seconds,
all the active
commands
are cancelled,
although
communication
is
The transmitter microprocessor receives the information from the sensor and checks the identity of
the crane. As soon as the sensor stops receiving the signal coming from the crane, the transmitter
LED, which was green, begins to flash in red, (in case of belly box transmitters, a buzzer also
sounds), in order to let the operator know that he has moved too far away. If this situation lasts
longer
maintained
with the receiver.
In this way the main contactor
and the selection
orders
are
maintained.
In order to return to the operating mode, all the worker has to do is move back into the working
zone. Movement orders must be disabled in order to restart movement. Once the transmitter enters
the working area, movement orders will not be ready to be used unless they have gone to zero.
This is to make movements start in first speed. If the remote control is provided with a Display,
whenever the transmitter is out of range, the message “Out of Range” will be displayed.
The remote control has got 4 modes of operation defined in the EEPROM:
1.- Range Limiter only at startup (Electronic Key): In order to make the transmitter work, it is
necessary that the transmitter is inside the starting zone, defined by the position of the infrared
transmitter.
2.- Range Limiter only in operation: The transmitter can be started anywhere, but the movement
orders will not work until the transmitter is inside the working zone.
3.- Range Limiter at startup and operation: The transmitter in order to work must be inside the
working zone always.
4.- Range Limiter only as an output Relay: This functionality makes the transmitter not to show In
range or Out of range situation in the transmitter itself. It will not mask any order. The information
will be sent to the receiver in order to process the information as an output relay or a condition to
the relay table.
