×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Help 1HP Electric Motor

Help 1HP Electric Motor

Help 1HP Electric Motor

(OP)
I have a cable winch that I would like to drive with a 1 HP electric motor.

I would like to Run Motor Forward and Reverse.

Don't know how to do this...   Have a Dayton 1hp Electric motor. Instruction say to Switch Switch T5 and T8:

Forward: (P1)   (P2-T8-T3)   (T2-T5-T4)

Reverse: (P1)   (P2-T5-T3)   (T2-T8-T4)

Would like to Run motor forward and Reverse for winch.
By the use of UP / Down Button From old winch. has 2 hots and one nutrual.
Any sugestions??  Are other motors better for this prodject?

RE: Help 1HP Electric Motor

Question: Do you plan to have a hand operated Forward Reverse Switch or Push-Button Operated Forward Reverse Stop Station?
Visit
http://www.allaboutcircuits.com/vol_4/chpt_6/4.html
for wiring diagram of contactor and push button operated motor.

RE: Help 1HP Electric Motor

(OP)
push Button but Open to any ideas...

RE: Help 1HP Electric Motor

(OP)
Hold Down Buttons to close contacts.
For a winch so I don't want it to stay on..

RE: Help 1HP Electric Motor

Comment: If there is a need to operate the motor reverser by pressing push button to have it on only, forward or reverse, then remove sealing contacts M1 and M2 and Stop button.

RE: Help 1HP Electric Motor

is this setup on a bridge crane or similar and controls from pendant or is the winch stationary and operator station permanently mounted, if you want to do this from a pendant control then you will probably need to use a relay system but if it is a stationary set up then you need a drum switch that you can buy from grainger or similar

RE: Help 1HP Electric Motor

(OP)
Drum Switch Sounds Like a Plan...
Is it easy to Wire?

RE: Help 1HP Electric Motor

A drum switch will do it nicely.

Voltage also determines how it shall be connected!
110v is a 4 wire control.
220v is 3.

The 2BW44 can be converted to momentary too!
see...
http://www.grainger.com/Grainger/productdetail.jsp?ItemKey=2BW44
Take note... make sure that the drum switch OPENS both hot legs, when off, to the motor when considering it for 220vac or you may need another disconnect before the switch!

RE: Help 1HP Electric Motor

Hmmm, slightly off topic, but. . .

Careful with using AC motors on winch/crane applications, they produce very low torque when at zero speed -- when you release the brake you might find your winch drops the load. . .

For that reason cranes usually use either DC motors or, for AC motors, VFD's that can provide both high-torque and precise speed control at zero speed.

You might want to post some details on the mechanical side of your winch to be on the safe side.

Please keep in mind that I'm speaking way out of my area of expertise here, too. . . .

RE: Help 1HP Electric Motor

peebee is right about load falling.  Whatever you do, be mindful that some smart person might just push both buttons at the same time.. interlocking up/down should be considered.

RE: Help 1HP Electric Motor


There is a potentially serious safety aspect to electrically reversible 1ø-motor application similar to the type described.  

With regard to reversing 1ø-motor rotation, be certain that if the start winding is switched integral to the 1ø motor [with something like a centrifugal-start switch] that motor power is interrupted long enough the permit the centrifugal-start switch to reclose, or else the motor rotation will likely not reverse, but unexpectedly reaccelerate and continue to rotate in the previous direction.
  

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources