In a DRC calculation n.nnn kcal/mol of excess kinetic energy is added to the system.  At the start of a DRC calculation, the atoms are initially at rest.  So kinetic energy cannot be added to the system.  When KINETIC=n.nn is used, the DRC is first run for a few steps until the atoms have a significant velocity.  This is when the kinetic energy amounts to 0.2 kcal/mol.  When that happens, the kinetic energy is increased suddenly by n.nn kcal/mol.  The next few steps will show errors in the output as the energy is added to the system.  The use of 0.2 kcal/mol is arbitrary - any small number could be used.

If a system starts off with an energy of -100 kcal/mol, and KINETIC=10 is used, the DRC will be run with a total (kinetic plus potential) of -90 kcal/mol.

See VELOCITY and Dynamic and Intrinsic Reaction Coordinates for more details.