2 or 4 quadrant?
2 or 4 quadrant?
(OP)
I need to choose a DC Drive to be installed on a horizontal wire spooler (picture attached for reference. not the actual machine).
The machine will be taking up wire feed from a wire drawing machine and a dancer will be installed between both to regulate spooler´s speed
The question is: DC Drive for spooler should be 2 o 4 quadrant?
Thanks!
The machine will be taking up wire feed from a wire drawing machine and a dancer will be installed between both to regulate spooler´s speed
The question is: DC Drive for spooler should be 2 o 4 quadrant?
Thanks!





RE: 2 or 4 quadrant?
If the machine ramps up and down in tens of seconds, you definitely need a four-quadrant drive so you can keep wire tension (acceleration compensation works both ways) constant.
Those two facts. Plus the fact that a four-quadrant drive isn't much more expensive (if at all) than the alternative braking resistor and also produces less heat makes me vote 4 4. No doubt!
I've done that and other spooling/winding machines for decades. Once in a while someone tries a two-quadrant drive. No ovations...
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: 2 or 4 quadrant?
When wire breaks: the "movable" dancer´s pulley falls down and press a limit switch that desable the drives and applys neumatic disc brakes on both machines
RE: 2 or 4 quadrant?
But if the operator wants to keep production up, I recommend 4-q. Otherwise he will have to turn that potentiometer quite slowly.
What brakes are there? Disk brakes?
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: 2 or 4 quadrant?
My question about 2 or 4Q was done because I thought that the selection depend on the type of load and I was not sure what to choose
RE: 2 or 4 quadrant?
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: 2 or 4 quadrant?
Thank you!