I have an Emerson Electric motor with no wiring diagram. Before I put on the welding goggles and start experimenting, I thought I would ask if anyone would know where I can get a wiring diagram for this motor. I have tried calling Emerson Electric and their dealers to no avail. I have looked in books at the library, but they speak in general terms. The name plate has the following:
Model S60 CXBLH-2628 Type S
Frame C56Z HP 1/3 RPM 1725
Volts 115 Amps 5.6 60 Hz 1 phase
The terminal block has 4 terminals, marked T1, T4, K1, and K2. There is 7 ohms dc resistance betwee T1 and T4, while K1 and K2 are open with respect to all other terminals. All terminals are open with respect to ground. I have not checked resistance while the centrifugal start switch was tripped. I would assume that T1 and T4 are the likely places for house current, and would guess that the others are somehow involved in reversing rotation, but even then I would think they should have some current path, unless the start switch has something to do with it.
Thanks,
Scott
Replies
Sounds like a small standard split-phase motor unless you see a capacitor. Either way T1 and T4 would be the power leads. The K leads are more a mystery but likely go to a starting winding. These would also control the direction of motor rotation. This starting winding could be controlled by a centrifugal switch, more rarely a current relay or an external start switch. All of these would explain why the winding K1-K2 does not show continuity.
Are the wires going to the terminals color coded? What colors?
Were there any jumpers connected between terminals? In what manner? What to what?
Are the terminals capable of taking two terminals?
Where did you get the motor? Do you know what was the motor originally attached to or designed to run?
What are you trying to use the motor for?