to calibrate it.
z
Phenomena of faults of frequency deviation:
a. The degree of frequency deviation is too high, and frequency deviation
protection occurs.
b. No load output current is very high, or even overload protection occurs.
c. The welding head squeals, with serious heating up.
z
Method of commissioning:
Click the ultrasonic testing button for short time, observe the indicated
value of the degree of frequency deviation (frequency deviation protection
will occur when the degree of frequency deviation exceeds 20%); adjust
the frequency-adjusting knob finely to raise or lower the working frequency
band, and then click the ultrasonic testing button, observe if the indicated
value of the degree of frequency deviation is lower than the previous value;
if lower, continue to adjust the frequency-adjusting knob in the previous
direction, and simultaneously, click the ultrasonic testing button in short
time, observe the indicated value of the degree of frequency deviation until
the degree of frequency deviation is adjusted to the minimum (less than
10%). If higher than the previous value, adjust the frequency-adjusting
knob in reverse direction, and simultaneously, click the ultrasonic testing
button in short time, observe the changes in the degree of frequency
deviation until the degree of frequency deviation is adjusted to the
minimum.
z
Notes for the adjustment:
a. The minimum degree of frequency deviation (less than 10%) and the
minimum no load (less than 0.5A) are the standards for frequency
control.
b. In case of errors with transducer system or serious frequency deviation
for connection failure or misconnection of transducer, it will not work to
correct frequency now. The transducer and connecting wires will have
to be adjusted or replaced.
c. In special unexpected cases such as replacing or repairing the
components of transducer (like acoustic welding head), the occurrence
of frequency deviation protection during operation, and the first time of
switching on and operation, it requires calibrating the working frequency
band of the generator.
(2) Load
parameters
