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In this paper, we design control systems that can control a servo motor on a spot welding machine. As controller, the PLC can control the rotary movement on the jig table. In this case, we design the control system, input and output cabling systems to and from the PLC. There is a request for change in the condenser model, so the spot welding machines are designed and made specifically to be used to perform three times welding process on new type condenser parts. From the testing and result, we find that the rotary table jig on the spot welding machine can move according to the required welding angle i.e. 17. It can do the welding process to reach the new condenser specifications.