NUOVA ELETTRONICA DSP LASER, Инструкция по эксплуатации

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DSP LASER
56 DSPLSR01EN
15. Use
Here below the operations and checks to execute at every switch-on of the machine are
listed.
At each work shift, it is necessary to check the correct positioning of the device as
described at chp. 15.4.
15.1. Setting of PCV
For sheets with good flatness, it is generally sufficient to inhibit DSP LASER when the tip of
the punch is at a distance from the sheet slightly greater than the safety distance (5 mm +
stop space). If the processing is interrupted, it is necessary to increase the PCV height with
respect to the sheet. The value obviously depends on the flatness of the sheet and, above
all, on the time necessary to the press command system to reach the value of reduced
speed, elaborate the relevant signal and inhibit the OSSD outputs. PCV then depends on
the detection height of DSP LASER.
Residual risk :
Higher the speed change point is set, greater is the stroke with
unprotected tool. Shorter is the uncovered part and minor is the
possibility to insert a part of the body between the punch and the
sheet.
15.2. Check of the stop space
At every switch-on of the machine, and then of DSP LASER, the check of the stop space is
required, so it is necessary to move the mobile table to PMSM and command the high-
speed closing keeping the speed constant until the interception of the limit-switch VSA, as
otherwise the device considers the check not passed and sets the OSSD outputs to state
OFF.
The check of the stop space is even required after 30 hours of continue device supply and
then of switch-on of the machine. At every switch-off the count is reset.
If the table does not stop within the foreseen space or the procedure described above is not
properly executed, the control circuit of the device considers the check NOT passed. In this
condition, the high-speed closing of the press cannot be commanded any more. The power
supply must be cut in order to repeat the check and, first, the causes that have determined
the failure of the check must be removed.
15.3. Adjustment after the change of the upper tool
Each time the upper tool is changed, it is necessary to adjust the devices.
Even if the height of the new installed tool remains unchanged with respect to the previous
one, the correct alignment of the protection area must be verified.
For this purpose, the test and positioning instrument is provided with DSP LASER and must
be kept near the machine.
Set a low closing speed, lower than or equal to 10 mm/sec.
Lay the test and positioning instrument over the lower tool near TX and lower the upper tool
until its tip brushes against the notch present in the vertex of the groove of the upper part of
the instrument laid on the die.