Weld Schedule (or Weld Profile) is a record of all welding machine settings plus identification of the machine needed to produce a weld for a given material of a given size and finish.
The amplitude and duration of all force and heating parameters can be defined in the 'weld schedule.' The four critical parameters are: electrode force, squeeze time, weld pulse and hold time. Variations can also be dual pulse and other sequences.
For more information, read our paper: 'Quality Resistance Welding Solutions: Defining the Optimum Process'
And for more information about the resistance welding process read our Fundamentals of Resistance Welding.