Wiring an ECM to AC power

ECM means "electronically commutated motor." Fundamentally it is likely a brushless DC (BLDC) motor. Commutation is the fancy name for the process of moving the magnetic fields in sync with the motion of the rotor in order to sustain motion. This type of motor won't run without an electronic controller. Controllers are, to some degree, designed to work with particular motors depending on maximum voltage, current, speed, load, acceleration profile -- any given speed controller might or might not perform well, or at all, with a given motor.

The short answer is this: one doesn't wire an ECM motor to AC power. The AC power goes only to the motor controller; the motor controller outputs go to the ECM motor's windings. There are likely to be position sensors built into the motor which provide feedback to the controller as well.

All this said, though.. it's interesting that the motor would have mains voltages marked on it. This motor may have a built-in controller -- if so a few of the pins in the connector are probably for mains supply while the others are for logic signals that tell the controller what to do.