Instruction Manual
LIUDPP002_eng-00AUTEC
29
4.4 Protection again unintended movements from the andill position
UMFS
Unintended movements of the Machine, that is Machine movements that are
not activated by movements of the actuators, may occur due to electrical or
mechanical failure or malfunction that may affect the Radio Remote Control.
The re position of the actuators on the Transmitting Unit is the neutral position. When all the
actuators related to commands protected by the UMFS function (such commands are indicated
in the Technical Data Sheet as COMMAND+SAFETY) are in the neutral position, the Radio
Remote Control keeps the Receiving Unit's SAFETY outputs deactivate, regardless of the
atus of all the outputs related to the commands.
When all the actuators of commands protected by the UMFS function are in their neutral position,
the UMFS function reduces the risk of accidentally activating Machine's movements in case of
electrical failure in the Radio Remote Control.
During the Radio Remote Control art up, if all actuators related to commands
protected by the UMFS function are in their neutral position, possible movement
commands due to electrical failure do not activate the SAFETY outputs.
If all actuators related to the commands protected by UMFS function are released,
SAFETY outputs are deactivated after about 1 second (for the ADD Receiving Unit
only, such delay cannot occur: see “SAFETY delay time” in the Inallation Manual).
The UMFS function prevents the Radio Remote Control from arting if an electrical
failure of movement commands is detected.
THE UMFS FUNCTION WORKS CORRECTLY IF AND ONLY IF "SAFETY"
OUTPUTS ARE CONNECTED CORRECTLY (SEE INSTALLATION MANUAL).