Alternative to break motor
Alternative to break motor
(OP)
I am using a standard motor and helical bevel gearbox in a lifting application. In order to prevent the load from back driving the gearbox when it stops I am using a break motor. It all works great. I am concerned about the life of the break motor. We are using a frequency drive to bring the load to a stop before engaging the break to eliminate break pad wear. We are using a 3HP break motor from leeson, and just looking at the mechanics of their break it does not look like it was designed to engage and disengage 500 times / day. I was at six flags riding the tony hawk ride and notices they were using sew eurodirves to stop the cars, but it just looked like a standard motor and parallel shaft gearbox. Would something like a vector motor / vector drive have the ability to hold the load? Or do you have any other suggestions?





RE: Alternative to break motor
RE: Alternative to break motor
RE: Alternative to break motor
Keith Cress
kcress - http://www.flaminsystems.com
RE: Alternative to break motor
Read;
FAQ237-1062: What is Vector Control in a VFD?
FAQ237-1063: How does Vector Control compare to Servo Control?
RE: Alternative to break motor
That is what type of vector motor/drive I was referring to. Is there a spec that shows how much torque I could expect at zero hz? They say full torque at zero hz. Is that really what they are capable of?
Thanks for the info.
RE: Alternative to break motor
Typically I don't recommend doing it for the novice VFD user, I would suggest getting someone involved who has specific experience in applying vector VFDs to hoists. A relatively minor error can result in a runaway load, something you likely want to avoid.