Troubleshooting & Diagnostic Procedures Flashcards

What is the first step when a robotic system encounters a malfunction?

Answer: Perform a visual inspection.

When a robotic system malfunctions, the initial step is always to perform a thorough visual inspection. This allows technicians to quickly identify obvious issues like loose cables, physical obstructions, leaks, or damaged components without further intervention. It helps in safely assessing the situation before attempting more complex diagnostic or repair procedures.

Which tool is commonly used to check the voltage of robotic components?

Answer: Multimeter

A multimeter is an essential diagnostic tool used to measure various electrical properties, including voltage, current, and resistance. In robotic systems, it is commonly employed by technicians to check the voltage levels of components, power supplies, and control circuits. This helps in troubleshooting electrical issues and ensuring proper power delivery throughout the robot.

What should a technician do if a robot’s axis movement is erratic or inconsistent?

Answer: Inspect encoder signals.

Erratic or inconsistent robot axis movement often indicates a problem with the feedback system that controls precise positioning. Encoders provide critical position feedback to the robot controller, so inspecting their signals can reveal if they are faulty, noisy, or disconnected. This diagnostic step helps pinpoint issues with position sensing, which is vital for smooth and accurate robot operation.

Why is it important to consult error codes or logs during robotic troubleshooting?

Answer: To identify potential fault sources.

Error codes and system logs provide invaluable diagnostic information, acting as a historical record of events and anomalies within the robotic system. Consulting these resources during troubleshooting helps technicians quickly identify the specific components or processes that triggered a fault. This data-driven approach significantly streamlines the diagnostic process, leading to more efficient and accurate problem resolution.

What is the purpose of performing a loopback test on robotic controllers?

Answer: To check internal signal routing.

A loopback test on robotic controllers is a diagnostic method used to verify the integrity of internal communication pathways and signal routing. It involves sending a signal out from a port and immediately routing it back into the same port or another designated port. This test confirms that the controller's input/output circuitry and internal communication channels are functioning correctly, helping to isolate issues to either the controller or external devices.

If a robot gripper fails to hold parts properly, what should be checked first?

Answer: Air pressure supply.

Many robotic grippers operate using pneumatic systems, relying on compressed air to actuate their gripping mechanism. If a gripper fails to hold parts properly, the most immediate and common cause to check is the air pressure supply. Insufficient air pressure will prevent the gripper from generating enough force to securely grasp objects, making it a critical first diagnostic step.

Which of the following would likely cause a robotic joint overcurrent alarm?

Answer: Blocked movement or mechanical jam.

A robotic joint overcurrent alarm typically indicates that the motor driving a specific joint is drawing excessive current. This usually happens when the joint encounters resistance, such as a mechanical jam, an obstruction, or a collision, forcing the motor to work harder than intended. The alarm is a safety mechanism to prevent motor damage and further mechanical stress on the robot.

Which documentation is essential when diagnosing recurring robot system faults?

Answer: The robot's maintenance log.

The robot's maintenance log is an invaluable document for diagnosing recurring system faults because it provides a historical record of all previous maintenance activities, repairs, and reported issues. By reviewing past entries, technicians can identify patterns, understand previous troubleshooting steps, and determine if the current fault is related to prior problems. This historical data is crucial for effective long-term fault resolution.

Why should a technician use diagnostic software tools during robot troubleshooting?

Answer: To monitor robot system parameters.

Diagnostic software tools are indispensable for robot troubleshooting as they allow technicians to monitor various real-time system parameters, such as motor currents, joint positions, sensor inputs, and error flags. This detailed data provides critical insights into the robot's internal state and operational performance. By analyzing these parameters, technicians can quickly pinpoint anomalies and diagnose the root cause of malfunctions.