StartLux: 24V Control Circuit Diagnostics Simulation

An actuator loses power under load. In this simulation, a probe-equipped robot arm investigates a 24V control circuit by comparing no-load and loaded readings along the path from the supply to the load. The sequence ends with fault localization, isolation, a fresh contact measurement, and probe retraction for maintenance handoff. What happens in the video: - Touch TP0 to collect a no-load reference, then engage the cabinet's test-load relay. - Measure TP0, TP1, TP2, and TP3 under load, moving the probe between the copper test points. - Compare the acquired voltage readings and select a high-resistance terminal-contact diagnosis. - Command the cabinet to isolate the circuit, touch TP2 again to check the residual voltage, and retract the probe. The recording shows about 23.91 V at TP1 and 19.79 V at TP2 under load, making the drop across that segment visible. After isolation, the new TP2 reading is 0.00 V. These readings belong to this simulated circuit. Cabinet actuators perform the switching: K1 engages the test load and Q1 opens the circuit. The robot arm performs the contact measurements and does not press the cabinet switches. According to the supplied notes, the decision model sees only acquired readings, public circuit topology, robot state, and legal candidates. The hidden injected resistance is withheld. The surrounding program moves the arm, checks probe contact and force before admitting a reading, rejects stale choices, and requires a new post-isolation measurement. A diagnosis report is a decision step even when it causes no arm movement. This is a MuJoCo contact simulation coupled to a simplified DC resistance network. The common return is already connected; the demonstration does not model two-probe wiring or real sensor hardware. This publication reviewed the recording and supplied documentation without rerunning the simulation or auditing raw inference traces. The original 25-second recording uses Chinese labels and has no audio. It demonstrates a diagnostic workflow, not a certified procedure for live electrical equipment; displayed choice probabilities do not establish diagnosis accuracy.