text: <s>[INST] K5700 Drives Inverter Overtemp Fault We have a vertical load application with two axes sharing the load using the same K5700. For some reason when we move the axes up or down, we will intermittently get an Inverter Overtemperature FL Fault. So far, we haven't been able to nail down a root cause. It doesn't seem like the torque is causing this problem because we have tried with varying weights and torques, and it doesn't seem like velocity or acceleration are the main factors either because we have tried playing with the speeds. We trend the inverter temp and notice that this alarm occurs when the inverter temp hits 155.6 degrees C. Does anyone have any good ideas as to why this fault might be occurring in our application? [/INST] EDIT: added proper numbered list to questions -FL Hello Joe. Based on the little information's that you give us it is not easy to identify the issue you have. Some questions: is it a new installation that you are commissioning or something new on an old system? you said that the dynamic generates the over temp fault. what is the torque value before the fault occurs... are you close to 100% or above for how long , does the 2 motors shows approximately the same torque level (how did you manage the load sharing ? ) have you check that the break works correctly? stupid question (but I have seen it) check if the motors are not working against each other did you monitor the drive capacity tag? could you provide the Drive and motors ref , to see if they can match? do you have a current and position error trend ? Regards \\n </s>