Motor Control/Sensor Question
Motor Control/Sensor Question
(OP)
At a high level I would like to understand if I can connect a servo motor directly to a cable reel and have the motor interpet cable line "looseness" (torque) as it winds/unwinds...adjusting speed accordingly per a PLC/software program. I can provide more information (load magnitude, etc...)once deemed possible.
Thanks in advance.
Thanks in advance.





RE: Motor Control/Sensor Question
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Motor Control/Sensor Question
"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln
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RE: Motor Control/Sensor Question
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Motor Control/Sensor Question
Seen WRIM on indoor gantry cranes. Not very big ones.
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Motor Control/Sensor Question
"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln
For the best use of Eng-Tips, please click here -> FAQ731-376: Eng-Tips.com Forum Policies
RE: Motor Control/Sensor Question
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Motor Control/Sensor Question
RE: Motor Control/Sensor Question
A cable reel doesn't usually pick up a load. It is used to pay out or recover a cable as a machine such as a gantry crane travels back and forth on its tracks. The tension developed by the torque motor or WRIM is enough to ensure reliable recovery of the cable without being so great as to damage the cable. The motor determines the tension on the motor, there is no conventional load. The end of the cable is anchored.
Although your group may refer to the device as the "Cable Reel" you may be better to consider this as a winching application when asking for advice. This application looks like a 50 HP or greater winching problem.
Have you considered an induction motor with a Variable Frequency Drive? That will give you smooth controlled speed and acceleration/de-celleration and extra breakaway torque if you need it. A WRIM may also be suitable but will not give as good control when lowering the load.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Motor Control/Sensor Question