Troubleshooting KUKA robots

Create Date: 2024-8-30 12:03:23|Source: KUKA

How can I troubleshoot KUKA robots simply?

　　KUKA robots work on the same principle of reciprocating work, and a good robot requires the combination of hardware and software to achieve the desired working results. For example, self-learning memory programming, etc., the obstacle automatic detection and bypass function has been realized in some advanced robot functions, which is a high level of detection + application (program) environment.

The automatic robotic arm actually imitates the operation process of a human being, the joints are just controlled by different servo drives, which direction needs to swing, the action of that servo, and the control stroke of the servo motor. In addition to after-sales estimates, no one can get information about the electrical equipment of KUKA's core drives, which brings certain difficulties to maintenance. The customer uses the KUKA robotic arm as a welding platform, and the workshop uses four identical machines.

The preliminary is to eliminate the peripheral wiring, let the technician assist, and completely eliminate the welding of the connecting wire: whether the welding is loose, whether the connection is rusty, whether the wire is broken. It was started after confirming that there was no failure, and sure enough, it failed after 40 minutes.

Then followed by the circuit, the manual/automatic switching is carried out with a conversion key, so it is concluded that this should be a digital circuit, that is, the digital port is either powered or lost, which is also in line with the working principle of the digital circuit.

Along this line of thought, the circuit is found, the control panel enters the controller, and the controller signals pass through the signal processing board to control the power supply. After a comparative analysis, it was confirmed that the digital signal went to the power controller. All that remains is to repair the power controller. The static test digital optocoupler is normal, the robot works normally when the power is turned on, and it is abnormal after a period of operation, first heated with a hair dryer, in the test, when the primary clamping diode of the seventh optocoupler is detected, the impedance becomes significantly smaller, and the heart is happy, remove the parts, measure with 10k, obediently, the impedance is only 1k, and the leakage is serious. Replace, power up, solve.

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