Electrical motor wiring problem

[jplambs]

Hi all,

I am trying to wire a motor up at the moment with a forward and reverse function as well as a two way dead switch. I've got everything wired up ok at the moment but once I try to wire in the two starter wires I immediately loose the two way function, every time I turn the switch it only goes in the one direction. Any ideas? Thanks.

[rovercare]

More details? cct drawings? some single phase motors always spin in the same direction regardless of polarity

[jplambs]

The motor is capable of spinning in both directions depending on the polarity. It is from a wool press, the original motor died and the electrician brought out the new one, couldn't work out how to wire it and that was about 12 months ago. The system works so that once the press has corkscrewed down it hits the dead-switch which cuts the motor until the polarity is switched over. It does the same thing once it hits the top.

All of this is working without a hitch, until I tried to wire the starter coils in, I tried wiring them in so that they reverse polarity with the motor but that didn't work so I tried them normally and that didn't work either. The electrician took all the wiring diagrams with him so I don't have anything to work from as far as the motor goes.

[rovercare]

Starter coils? is it a 3 phase motor? with a simple forward/reverseing contactor setup? need more details, how many wires from the motor?, how is the limit in the control cct, hard without a visual

[Rangier Rover]

I had a single ph 480v motor that went both ways. Sent it away for a rewind. Put it back on and it went backwards
Wasn't good on a positive displacement mono pump

Hope my new hoist doesn't go backwards

[jplambs]

Thanks rovercare, I'll take some photos in the morning and put them up, it has 4 wires coming out of the motor.

[rovercare]

Thanks rovercare, I'll take some photos in the morning and put them up, it has 4 wires coming out of the motor.

Is one of those wires connected to earth, the frame of the motor? is it 415V 3 phase? the more pics the better, what do you mean by starter coils? its hard to take someones terminology that isn't in the trade (even some of those in the trade) if you get me some detailed pics and PM your number I'll try walk you through it, if I get a chance tomorrow

[Blknight.aus]

I think hes refering to the starter coils as the ones that are wired up to the centrifuge switch on some single phase motors that dont have starting caps.

IF I remember correctly. on a Bi directional motor that has that setup you leave the swtiching coils wired up as per normal and its just the pole change that does the DOR change.

[jplambs]

The first few pics.

[jplambs]

The next lot, please try not to laugh at my wiring diagramme.