DCM00003 REV. 07 27
4.2 Weld Overload
Weld overloads are premature shut downs of the power supply. Overloads signify
excessive loads and must be corrected if continued reliability of the equipment is to be
maintained. Hardware internal to the supply are controlling this function and it can not be
defeated.
The control system analyzes the end of weld characteristics to check for overloads. If the
system determines an overload an alarm occurs. The control halts action until the system
is reset.
Some of the possible causes for overloads are:
• The tool clearances are too small, horn and anvil touch during welding
• Excessive air pressure with low amplitude
• Defective Stack assembly
• Defective Power Transistors in power supply
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