New and Original Yaskawa Industrial Electric SGMGH Sigma II Motor 2.9kW 1500RPM SGMGH-30A2A61

New and Original Yaskawa Industrial Electric SGMGH Sigma II Motor 2.9kW 1500RPM SGMGH-30A2A61

Servomotor Type: SGMGH Sigma II
Rated Output: 2.9kW; 1500RPM
Power Supply: 200V
Encoder Specifications: 17-bit Incremental Encoder
Design revision order: Standard for 1500 RPM
Shaft Specifications: Straight with key and tap
Accessories: Standard




OTHER SUPERIOR PRODUCTS

Service

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Servo Motor Control

The servo motor can be moved to a desired angular position by sending PWM (pulse width modulated) signals on the control wire. The servo understands the language of pulse position modulation. A pulse of width varying from 1 millisecond to 2 milliseconds in a repeated time frame is sent to the servo for around 50 times in a second. The width of the pulse determines the angular position.

For example, a pulse of 1 millisecond moves the servo towards 0°, while a 2 milliseconds wide pulse would take it to 180°. The pulse width for in between angular positions can be interpolated accordingly. Thus a pulse of width 1.5 milliseconds will shift the servo to 90°.

It must be noted that these values are only the approximations. The actual behavior of the servos differs based on their manufacturer.

A sequence of such pulses (50 in one second) is required to be passed to the servo to sustain a particular angular position. When the servo receives a pulse, it can retain the corresponding angular position for next 20 milliseconds. So a pulse in every 20 millisecond time frame must be fed to the servo.

Servo Motor wiring and plugs

The Servo Motors come with three wires or leads. Two of these wires are to provide ground and positive supply to the servo DC motor. The third wire is for the control signal. These wires of a servo motor are color coded. The red wire is the DC supply lead and must be connected to a DC voltage supply in the range of 4.8 V to 6V. The black wire is to provide ground. The color for the third wire (to provide control signal) varies for different manufacturers. It can be yellow (in case of Hitec), white (in case of Futaba), brown etc.

Futaba provides a J-type plug with an extra flange for proper connection of the servo. Hitec has an S-type connector. A Futaba connector can be used with a Hitec servo by clipping of the extra flange. Also a Hitec connector can be used with a Futaba servo just by filing off the extra width so that it fits in well.

Hitec splines have 24 teeth while Futaba splines are of 25 teeth. Therefore splines made for one servo type cannot be used with another. Spline is the place where a servo arm is connected. It is analogous to the shaft of a common DC motor.

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