Industrial Servo Motor Yaskawa ELECTRIC 50W AC SERVO MOTOR SGMAH-A5AAAYU41

Industrial Servo Motor Yaskawa ELECTRIC 50W AC SERVO MOTOR SGMAH-A5AAAYU41
 
 
 
 
 
QUICK DETAILS

 
 
 

 
SIMILAR PRODUCTS

 
 
 
 
Low Voltage Protection
Low Voltage Disconnects - Protection device operates to disconnect the motor when the supply voltage drops below a preset value. The motor must be manually restarted upon resumption of normal supply voltage.
Low Voltage Release - Protection device interrupts the circuit when the supply voltage drops below a preset value and re-establishes the circuit when the supply voltage returns to normal.
Phase Failure Protection
Interrupts the power in all phases of a three-phase circuit upon failure of any one phase.
C Normal fusing and overload protection may not adequately protect a polyphase motor from damaging single phase operation. Without this protection, the motor will continue to operate if one phase is lost.
C Large currents can be developed in the remaining stator circuits which eventually burn out.
C Phase failure protection is the only effective way to protect a motor properly from single phasing.
 
 
 
What Is Required to Maintain Accuracy During Coordinated Motions?
The magnitude of the error really does not matter if the path being followed is a single axis move. The axis will trail the moving command, but will catch up when the endpoint is reached. One could not detect, by observing the cut, that an error ever existed. When two axes are moved simultaneously to generate a sloping straight cut, large errors can develop. Figure 2 shows a two axis move along a 45° slope where
both X and Y are being commanded at the same velocity. The gain of the X axis is twice that of the Y axis, so the X axis error (EX) is half that of the Y axis error (EY). The resulting path is offset from the commanded one depending on direction, velocity, gains and angle of slope. If the gains of the two axes in the example were identical, EX and EY would be identical and the machine would lag the moving command, but it would be precisely on the desired path. It would catch up when the command stops at the endpoint. Once the gains are precisely matched, the direction, velocity and angle of slope no longer matter. As long as the commanded path remains on a straight line, the axes will always lag, but precisely on that line. Maintaining accuracy for linear moves becomes an exercise in matching gains. This will require detuning the more responsive axes to match the poorest performing one. Many systems allow gains to be set digitally (and thereby precisely). Often the gain will be a potentiometer or digital register adjustment. This adjustment is made by commanding each axis at the same medium range value and adjusting the potentiometers to achieve equal errors.

 
 
Circular moves, where the commanded path is generated by circular interpolation, is another story. Again, the axes gains must be matched or one will be cutting eggs instead of circles. With matched gains, circles will always result, but not necessarily of the commanded size. With low velocities and high circle radii, errors are negligible, however, as the ratio of velocity to circle radius increases, the error in the circle size
increases. This raises the question: Will the resultant circle be larger or smaller than the commanded one?
(Think about this before reading on.)
 
 

OTHER SUPERIOR PRODUCTS