Hello,
I am a new member here, I was sent a pm from a member over at CNCzone to come here and check the forum out. I Like what I see so far....
So here is the dilemma I am having....
I have a Moak 32" band saw from 1949 with a Master Motor (3hp/3ph - 575rpm,13.7 amp) I am using a Yaskawa VFD with a 19.5 amp rating on the 3ph output to run the motor (the drive was designed for 230 single phase in) . I was concerned about the age of the motor and the rep from precision zone recommended a noise filter, the Tonkin-L350 if I did not feel comftorable and was worried about spike voltages hitting the windings.
I have only used the saw 2 or 3 times since i brought her into my shop and everything was fine and worked Well. I am in the process of completing a restoration on her and I took of the rubber tires and wanted to clean off all the old glue. I ran the VFD at 3hertz for the frequency setting to run it slow so I could scrape all off the old glue/adhesive off the wheel with a steel chisel.
I noticed this funny electrical smell, couldn't figure out were it was coming from then I put my hand on the Tonkin and nearly burned my hand. There was some clear liquid coming out of the top, very little,a few drips so I imediatly shut it off.
My question is, why would it heat up like that and do I really need the Tonkin -L350 noise filter? I took it off the machine and ran it directly from the VFD to the Master motor for a few minutes with no issues running it at 3hertz just to check the heat on the motor the motor was still cold, not even warm.....
Is it really necessary to have this filter in there? I was just concerned because of the age of the motor/windings.
Any thoughts about this, what exactly happened to heat the L350 up like that and what was the clear liquid coming out? Do I really need the filter? I ran the band saw at a full 60hertz when I used her before and never had any issues....
I am thinking of omitting the L350 from the setup ....should I not do that. I have been getting mixed opinions on this....?
Thank you,
Brian
I am a new member here, I was sent a pm from a member over at CNCzone to come here and check the forum out. I Like what I see so far....
So here is the dilemma I am having....
I have a Moak 32" band saw from 1949 with a Master Motor (3hp/3ph - 575rpm,13.7 amp) I am using a Yaskawa VFD with a 19.5 amp rating on the 3ph output to run the motor (the drive was designed for 230 single phase in) . I was concerned about the age of the motor and the rep from precision zone recommended a noise filter, the Tonkin-L350 if I did not feel comftorable and was worried about spike voltages hitting the windings.
I have only used the saw 2 or 3 times since i brought her into my shop and everything was fine and worked Well. I am in the process of completing a restoration on her and I took of the rubber tires and wanted to clean off all the old glue. I ran the VFD at 3hertz for the frequency setting to run it slow so I could scrape all off the old glue/adhesive off the wheel with a steel chisel.
I noticed this funny electrical smell, couldn't figure out were it was coming from then I put my hand on the Tonkin and nearly burned my hand. There was some clear liquid coming out of the top, very little,a few drips so I imediatly shut it off.
My question is, why would it heat up like that and do I really need the Tonkin -L350 noise filter? I took it off the machine and ran it directly from the VFD to the Master motor for a few minutes with no issues running it at 3hertz just to check the heat on the motor the motor was still cold, not even warm.....
Is it really necessary to have this filter in there? I was just concerned because of the age of the motor/windings.
Any thoughts about this, what exactly happened to heat the L350 up like that and what was the clear liquid coming out? Do I really need the filter? I ran the band saw at a full 60hertz when I used her before and never had any issues....
I am thinking of omitting the L350 from the setup ....should I not do that. I have been getting mixed opinions on this....?
Thank you,
Brian