Hi everybody, looking for some advice here. We have a Toshiba molding machine with a rotary platen. Its kind of a prototype machine, there's only one more in the states from what I'm told. We have had some problems with it, we keep getting errors on the screen for The following;
ROT: Speed Error
ROT: Over Torque
Rotary servo speed error occurs
They are intermittent. The servo drive, encoder cable and motor have been replaced, service has been here for 5 days and can't figure it out. They are telling me the next step is to replace the motor that they just replaced in October of last year. Its a $8k motor but more importantly we need the machine to run. Nameplate FLA is 9.1. I separated the motor from the gearbox and had them rotate it in both directions and it was pulling 1/2 an amp steady. Reconnected the motor to the gearbox and rotated in both directions and the inrush was about 8.5 and it ran at about 5 amps steady. Reconnected it to the Platen and rotated it in both directions the inrush was about 12 and it ran at about 7.5 amps steady. These numbers seem fine to me and I feel changing the motor is not going to help.
The machine ran all weekend and shut down occasionally for the above mentioned errors but it has a smaller mold it. The heavier mold is going back in today and this is the one that we cant run because it errors out too frequently.
If anyone has any advice or recommendations on how to proceed with troubleshooting I would greatly appreciate it as we are getting to the point where we are going to be causing problems for our customer if we don't get this sorted out. I am going to attach a screen shot of the errors and Motor nameplate date.
Thanks to all
Bill
ROT: Speed Error
ROT: Over Torque
Rotary servo speed error occurs
They are intermittent. The servo drive, encoder cable and motor have been replaced, service has been here for 5 days and can't figure it out. They are telling me the next step is to replace the motor that they just replaced in October of last year. Its a $8k motor but more importantly we need the machine to run. Nameplate FLA is 9.1. I separated the motor from the gearbox and had them rotate it in both directions and it was pulling 1/2 an amp steady. Reconnected the motor to the gearbox and rotated in both directions and the inrush was about 8.5 and it ran at about 5 amps steady. Reconnected it to the Platen and rotated it in both directions the inrush was about 12 and it ran at about 7.5 amps steady. These numbers seem fine to me and I feel changing the motor is not going to help.
The machine ran all weekend and shut down occasionally for the above mentioned errors but it has a smaller mold it. The heavier mold is going back in today and this is the one that we cant run because it errors out too frequently.
If anyone has any advice or recommendations on how to proceed with troubleshooting I would greatly appreciate it as we are getting to the point where we are going to be causing problems for our customer if we don't get this sorted out. I am going to attach a screen shot of the errors and Motor nameplate date.
Thanks to all
Bill