The wiring method of Roller Shutter Tubular Motor :

1. Communication method. Suppose the windings of each phase are numbered as U1, U2, V1, V2, and W1, W2, connect according to figure b), and turn on the power. If the light is off, the wire ends connected to the two windings are both the head end or the tail end; if the light is on, they are not the same head end or tail end.

2. Assume that there is residual magnetism in the asynchronous motor. Assume that the windings of each phase are numbered U1, U2, V1, V2, and W1, W2), and turn the rotor of the motor. If the pointer of the multimeter does not move, it proves that the numbering of the head and tail is correct; if the pointer of the multimeter does not move Oscillating means that one of the phase numbers is incorrect at the beginning and end, and should be adjusted and retested phase by phase until it is correct.

3. Use the residual magnetism of the motor rotor and the multimeter method.

①Using a multimeter to electrically block out the two wire ends of the same phase winding.
 
② Connect the three-phase windings together in parallel, measure the current or voltage at both ends of the parallel windings with the milliampere or low-voltage gear of the multimeter, and turn the rotor at the same time. D1, D2, and D3) are connected in parallel, and the three terminals (D4, D5, D6) are connected in parallel. If the pointer of the multimeter rotates, it means that the heads and ends are not connected At this time, the windings of each phase should be adjusted one by one phase by phase, and the condition of the needle should be observed until the pointer of the multimeter does not move, and the head and end marks can be made.