LHarrington
Senior Member
- Location
- Saginaw Bay area Michigan
Good morning all,
Got onto a project yesterday involving a 4000watt laser that uses a Yaskawa F7 varispeed drive controlling a 20 hp motor for the turbo induction system. Machine will run for eight and a half minute as normal and then shuts down. Not sure what the time has to do with anything just trying to provide as much information as possible. After the shut down the drive has GF alarm on the display. Research on Yaskawas web states this is a ground fault issue. We have megged all related wiring to the drive and from the drive to the motor which all have passed. To continue to narrow the problem down we removed the drive in question and installed it on an identical machine. The problem of shutting down the machine again in eight in a half minute followed the drive. Currently it's off the a repair shop who is scratching there heads because they can't get it to fault out.
My first question is what can I tell them to look for or has any of you seen this problem and know what to suggest.
Secondly, did I jump to soon at blaming the drive? What else should I consider checking.
Third, I have located a American version of this drive in Chicago but the spec. show it only comes in 208 to 480 volt three phase. from the part number below the only difference is the letter "A" is replaced with a "U" which I have learn stands for Asian opposed to United States. Can I make this United State version work?
Lastly, the programming pendant is removable from the drive can I assume that it can be removed and plugged into a new drive and the programming parameters are present for the new drive? Are the programmed parameters stored in this pendant or the drive itself.
I was fairly confident when the problem moved with the drive. below I have listed the model of the drive in question.
CIMR-F7A2015IE
Thanks
LHarrington
Got onto a project yesterday involving a 4000watt laser that uses a Yaskawa F7 varispeed drive controlling a 20 hp motor for the turbo induction system. Machine will run for eight and a half minute as normal and then shuts down. Not sure what the time has to do with anything just trying to provide as much information as possible. After the shut down the drive has GF alarm on the display. Research on Yaskawas web states this is a ground fault issue. We have megged all related wiring to the drive and from the drive to the motor which all have passed. To continue to narrow the problem down we removed the drive in question and installed it on an identical machine. The problem of shutting down the machine again in eight in a half minute followed the drive. Currently it's off the a repair shop who is scratching there heads because they can't get it to fault out.
My first question is what can I tell them to look for or has any of you seen this problem and know what to suggest.
Secondly, did I jump to soon at blaming the drive? What else should I consider checking.
Third, I have located a American version of this drive in Chicago but the spec. show it only comes in 208 to 480 volt three phase. from the part number below the only difference is the letter "A" is replaced with a "U" which I have learn stands for Asian opposed to United States. Can I make this United State version work?
Lastly, the programming pendant is removable from the drive can I assume that it can be removed and plugged into a new drive and the programming parameters are present for the new drive? Are the programmed parameters stored in this pendant or the drive itself.
I was fairly confident when the problem moved with the drive. below I have listed the model of the drive in question.
CIMR-F7A2015IE
Thanks
LHarrington