VFD Winching Application
VFD Winching Application
(OP)
Looking for some input on the the need for Braking resistors. The application in winching. in some cases it is Material handling from above lifting stopping lowering of load, the other application is for marine winching, vessel moving paying out a load and then retrieval. My thought is that we are "motoring" out the load there is no free wheel of the motor to regen power back to the vfd and when the load is released it is held in place by mechanical braking .Another note the loads are always through gearboxes as well which would further reduce the chance of the load overspeeding the motor to create regen. Thoughts?





RE: VFD Winching Application
Keith Cress
kcress - http://www.flaminsystems.com
RE: VFD Winching Application
Not true for spur or helical gearboxes, which are used for efficiency reasons.
Sometimes true, but not guaranteed, for worm gear boxes.
Mike Halloran
Pembroke Pines, FL, USA
RE: VFD Winching Application
RE: VFD Winching Application
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RE: VFD Winching Application
Keith Cress
kcress - http://www.flaminsystems.com
RE: VFD Winching Application
RE: VFD Winching Application
They do SOUND different when they fail.
I'll finish my first coffee now.
Grin
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: VFD Winching Application