Industrial Servo Motor Yaskawa AC SERVO MOTOR NEW ORIGINAL SGMGV-09DDA6F

LEESON Electric also produces permanent-magnet direct current motors. The DC motor is the oldest member of the electric motor family. Recent
technological breakthroughs in magnetic materials, as well as solid state electronic controls and high-power-density rechargeable batteries, have all revitalized the versatile DC motor.

DC motors have extremely high torque capabilities and can be used in conjunction with relatively simple solid state control devices to give programmed acceleration and deceleration over a wide range of selected speeds. Because the speed of a DC motor is not dependent on the number of poles, there is great versatility for any constant or variable speed requirement.

Some AC induction motors are equipped with multiple windings so they may operate at two distinct speeds (low speed usually being one-half of high speed). Shown here is the connection diagram for one type of two-speed motor:

There are six terminals on the motor itself where the connections are made:

The motor’s datasheet will specify how the connections are to be made. This is typical:

Explain why the motor runs at half-speed in one connection scheme and full speed in the other. What is going on that makes this possible?