Robot controller and arc welding robot system

A robot controller that controls motion of a robot, to which a welding torch is connected, during a jog operation of the robot using a teaching operation device, the robot controller comprising:

• a contact detection unit that detects contact of a welding wire protruding from the welding torch with a welding target;
• an override-value adjustment unit that sets and changes an override value for increasing or decreasing an operating speed of the robot from a predetermined speed;
• and
• a control unit that receives an operation signal from the teaching operation device and that controls the robot according to the operation signal at the operating speed based on the override value, the override value being set by the override-value adjustment unit,
• wherein the control unit temporarily stops the robot and the override-value adjustment unit decreases the override value when the contact of the welding wire with the welding target is detected by the contact detection unit.