Dukane i220 User Manual page 75

5)
Ramp Up Time
Ramp up time increases the amplitude linearly in
the programmed time period at the start of the weld,
from zero to the programmed amplitude level. This
brings the stack up to operating amplitude smoothly
preventing shock stress.
0.150 seconds.
Factory setting is
Range is 0.000 to 1.250 seconds.
6) Ramp Down Time
Ramp down time decreases the amplitude linearly to
zero in the programmed time period following the
end of the weld, when ultrasound is shutting off.
0.000 seconds.
Factory setting is
Range is 0.000 to 0.250 seconds.
Dukane Manual Part No. 403-594-02
Continued from Previous Page
Larger, high amplitude horns may require
a longer ramp up time to properly start.
Ramp Down Time extends the service life
of complex acoustic stacks by minimizing
stresses encountered during the process of
shutting off the ultrasound. It is especially
recommended for very large horns, or when
the ultrasound is shut off in air.
Section 5 - Operation
NOTE
NOTE
Ramp Down Time
Continued
Page 67