Author Topic: What drum switch?  (Read 1153 times)

Offline PJW

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What drum switch?
« on: November 28, 2015, 08:48:10 AM »
I have a small motor with four wires coming out red, yellow, black & earth, it also has a capacitor with two wires, the motor runs forward with the capacitor to the red & rev to the yellow. I found a drum switch but dont know if it is the right one, so some advice is needed.
discription,Drum Switch--for Motor Control or High Current Switching

3 Positions: Forward, Stop, Reverse

6 Terminals: 2 Straight, 4 Cross

Contact Rating: 0 to 380V, 60A (3HP 120V or 6HP 240V Motors)

Switch Action: Maintained (Stay Switched)
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Offline Jo

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Re: What drum switch?
« Reply #1 on: November 28, 2015, 09:10:48 AM »
Drum switches are common on older Myford lathes but they should be wired with a start/stop contactor as well to meet safety standards.

Cowells fit to their lathes two controls: a normal two pole Forward/reverse switch and a start/stop (contactor).

Jo
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Offline PJW

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Re: What drum switch?
« Reply #2 on: November 28, 2015, 10:07:05 AM »
Thanks jo, I was going to fit a big red stop button as well just didnt mention that, but I wanted a stop before reverse for the motors sake.
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Offline Ian S C

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Re: What drum switch?
« Reply #3 on: November 28, 2015, 11:49:25 AM »
My switch gear uses a 3 button switch, top forward, middle off, bottom backward, the drum switch to me seems obsolete, and you still need an on off switch.
Ian S C

Offline bytewise

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Re: What drum switch?
« Reply #4 on: November 28, 2015, 01:45:28 PM »
For a small motor your drum switch will work fine. I think there have been posts on the forum showing the wiring for your motor and switch. If you don't find any, send me a PM with e-mail address and I will send you a diagram.