NUOVA ELETTRONICA DSP LASER, Инструкция по эксплуатации

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DSP LASER
16 DSPLSR01EN
Area Task
frontal It protects the operato
r’s fingers too close to the working area; moreover it protects
against the risk of squashing between the die edge and the tip of the upper tool.
This area can be inhibited for specific workings.
central It protects the operator against the squashing between the tip of the upper tool and the
sheet/die.
rear It forbids the squashing between the tip of the upper tool and the backgauges.
This area can be inhibited for specific workings or in case of interception of the
backgauges.
10. Requirements necessary for the correct use of DSP LASER
10.1. Command circuit of the press-brake
10.1.1. Start and stop
The closing stroke of the press-brake must be commanded by a three-position dead-man
command device (e.g. pedal). The released device (position n.1) must generate a stop
signal; the pressure of the actuator (position n.2) commands the closing movement of the
tools; while the further actuation beyond a greater-pressure point (position n.3) stops again
the mobile table. The passage from position n. 3 to position n. 1 must not generate a start
command.
No cycle of the press-brake must be able to be started using the DSP LASER device itself,
but a proper command device must be always foreseen.
The interruption of the detection area during the fast approaching phase of the tools (speed
greater than 10 mm/s) must stop the closing movement of the table.
The new closing must take place only after that the operator has released and operated
again the command device. If the detection area remains interrupted, it must be possible to
command the closing at a decreased speed (lower than or equal to 10 mm/s) in
combination with the three-position dead-man command (see chp. 10.1.2
Inhibition and
10.1.3 Operating modes ).
No closing movement must be possible at a speed greater than 10 mm/s while an object or
any part of the body (e.g. finger) interrupts an active part of the system interception field.
The function to start and stop the movements must be realized by the command circuit of
the machine with a safety level equivalent to that of the DSP LASER device, as prescribed
by EN 12622:2014.
10.1.2. Inhibition
The DSP LASER device creates a detection area between the dies. The interception of this
area must immediately stop the dangerous movements of the machine.
The inhibition of the stop signal produced by DSP LASER during the closing stroke of the
press-brake must be possible only if the closing speed has been previously decreased to a
value lower than or equal to 10 mm/s. The control circuit of the press-brake must be able to
make the press-brake reaches the decreased speed in safe way. Only as consequence of
this condition, the intervention of DSP LASER can be inhibited.