Sonics FC - Manual (Page 16)

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I N S T R U C T I O N M A N U A L • M O D E L F C P O W E R S U P P LY
15
OVERLOAD PROTECTION
The overload protection circuit will terminate the welding cycle when the
system is operated under adverse conditions, i.e., improper tuning, excessive
power supply loading, loose or failed horn or booster, thereby protecting the
power supply and other system components. When an overload condition
exists, the RESET button will illuminate and remain lit until the condition has
been corrected and the button is pressed. If the condition is not corrected, the
RESET button will remain lit. If a repeated overload condition exists, resolve
the problem before a failure of the power supply occurs.
If an overload condition exists, try the following:
— decrease horn force
— decrease amplitude (change booster or decrease output control)
— decrease downspeed
— check for loose or broken studs
— check the coupling surfaces between horn/booster and booster/converter
— check for cracked horn or booster
— check to see if the load meter exceeds 100% during weld process (if so, a
higher powered unit is needed)
If you cannot remedy the situation, contact Sonics.