Hello everybody,
I know it may not be a question for this forum but I have to post it. Inverter is SSD (Eurotherm) 650V, controls 1.10kW 5.04A motor which is connected to the gearbox. When it gets stop command from PLC (rising edge of the cam), stops in the right position but if the machine is stopped for some period of time it can not hold it`s possition. Eventualy after some time (15-20m) it moves for 25-30 degrees and cam together with it causing the alarm. I must say that there is some load that the motor has to hold in that position. There is one more motor with the same inverter working in the practicaly same conditions but it holds its position while stoped.
I am 99% sure that it is not mechanical (gear box) problem.
Is there some suggestions what to do or what to check?
Regards
I know it may not be a question for this forum but I have to post it. Inverter is SSD (Eurotherm) 650V, controls 1.10kW 5.04A motor which is connected to the gearbox. When it gets stop command from PLC (rising edge of the cam), stops in the right position but if the machine is stopped for some period of time it can not hold it`s possition. Eventualy after some time (15-20m) it moves for 25-30 degrees and cam together with it causing the alarm. I must say that there is some load that the motor has to hold in that position. There is one more motor with the same inverter working in the practicaly same conditions but it holds its position while stoped.
I am 99% sure that it is not mechanical (gear box) problem.
Is there some suggestions what to do or what to check?
Regards