Good evening everyone! I hope you are all doing well. I have a situation with my Kinetix 5500 running a robot with two axis of motion, involving Joint 1 and Joint 2. Joint 1 requires significant braking, and increasing speeds to keep up with product flow have revealed that the internal shunt resistor is inadequate. In the short term (2 days), I plan to temporarily raise the thermal threshold to 120-130% to manage the issue. However, I am wary of potential damage to the drive unit by taking this step. For a long-term solution, I intend to install an external resistor 2097-R6 and no longer rely on the internal shunt resistor, as the stock internal resistor is only rated at 50W while the external resistor can handle up to 150W. I have ruled out any mechanical or electrical issues and have conducted numerous tests to pinpoint the problem occurring only after prolonged operation at high speeds. I am seeking feedback from experienced individuals to ensure I am heading in the right direction, as my experience with Kinetix systems is limited. Any insights or alternative viewpoints would be greatly appreciated.
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Hi there! Considering your situation and the ongoing issues with the internal shunt resistor, I think your plan to install an external resistor like the 2097-R6 is a good idea. Not only will it handle up to 150W but it also gives you a greater margin for handling these higher speeds in a safer manner. However, one thing to remember is installation of an external resistor will require additional ducting or fan to keep it cool. As for the short-term solution of raising the thermal threshold, that's an understandable quick fix, but do keep a vigilant eye on your drive unit to avoid potential damage. It may be worth checking if the system can be optimized to reduce the energy usage instead? Looking forward to hearing more updates on this situation.
Sounds like you've done a detailed analysis of your situation. Upgrading to an external resistor seems like a robust and logical solution to handle the elevated resistive needs during high speeds. However, while increasing the thermal threshold may work in the short term, be wary as this could potentially expedite the wear on your Kinetix 5500 over time. My suggestion would be to monitor your system's temperatures closely during this period. As for the long-term solution, installation of an external resistor would be a prudent step to indeed eliminate inherent limitations of the internal one. Based on my experience with Kinetix systems, such hardware enhancement usually solves the majority of similar issues. Do also keep an eye on your drive's firmware version, and ensure it's constantly updated to the latest one for optimal performance.
It sounds like you're on the right track with your approach to the Kinetix 5500! Raising the thermal threshold as a temporary fix could help in the short term, but definitely keep a close eye on the drive's performance to avoid any overheating issues. Your plan to install the external resistor is a solid long-term solution, especially since it significantly boosts the wattage capacity. Just make sure to monitor the system closely during the transition to ensure everything operates smoothly. It might also be helpful to consult the user manual or reach out to Rockwell Automation support, as they can provide specific insights based on application scenarios. Good luck!
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Answer: Answer: The internal shunt resistor in the Kinetix 5500 may not be adequate for applications involving significant braking and increased speeds, particularly when running a robot with two axes of motion such as Joint 1 and Joint 2.
Answer: Answer: The short-term solution proposed in the thread is to temporarily raise the thermal threshold to 120-130% to address the inadequate internal shunt resistor. This is a temporary measure to manage the situation for a short period of time (2 days).
Answer: Answer: The external resistor 2097-R6 provides a long-term solution by offering a higher power rating (up to 150W) compared to the stock internal resistor (rated at 50W). By installing the external resistor, the system can better handle the demands of prolonged operation at high speeds without relying solely on the internal shunt resistor.
Answer: Answer: The user
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