![](/images/new-backgrounds/1240770/24077031x1.webp)
For Correct Operation
Application to Motors
Application to general-purpose motors
Operating frequency |
| The overspeed endurance of a |
| than 60Hz, it is required to examine the allowable torque of the motor, useful life of bearings, noise, vibration, etc. In this case, be | |
|
| sure to consult the motor manufacturer as the maximum allowable rpm differs depending on the motor capacity, etc. |
|
|
|
Torque characteristics |
| The torque characteristics of driving a |
| (starting torque decreases in particular). Carefully check the load torque characteristic of a connected machine and the driving torque | |
|
| characteristic of the motor. |
|
|
|
Motor loss and |
| The torque characteristics of driving a |
temperature increase |
| |
|
| |
Noise |
| When run by an inverter, a |
|
| When run by an inverter at variable speeds, the motor may generate vibration, especially because of (a) unbalance of the rotor |
Vibration |
| including a connected machine, or (b) resonance caused by the natural vibration frequency of a mechanical system. Particularly, be |
| careful of (b) when operating at variable speeds a machine previously fitted with a constant speed motor. Vibration can be minimized | |
|
| by (1) avoiding resonance points using the frequency jump function of the inverter, (2) using a |
|
| rubber shock absorber beneath the motor base. |
Power transmission |
| Under continued, |
| (gear motor) or reducer. Check with the motor manufacturer for the permissible range of continuous speed. To operate at more than | |
mechanism |
| |
| 60Hz, confirm the machine , s ability to withstand the centrifugal force generated. | |
|
| |
|
|
|
Application to special motors |
| |
Gear motor |
| The allowable rotation range of continuous drive varies depending on the lubrication method or motor manufacturer. |
| (Particularly in case of oil lubrication, pay attention to the low frequency range.) | |
|
| |
| For use of a | |
| There are different kinds of | |
| different rated current values. In motor selection, check the maximum allowable current for each motor of a different pole count. At | |
|
| the time of pole changing, be sure to stop the motor. Also see: Application to the |
|
|
|
Submersible motor |
| The rated current of a submersible motor is significantly larger than that of the |
| to check the rated current of the motor. | |
|
| |
| Inverter drive is not suitable for a | |
| ||
|
| |
|
|
|
Synchronous (MS) motor |
| In most cases, the synchronous (MS) motor and the |
|
| specifications suitable for a connected machine. As to proper inverter selection, consult the manufacturer. |
| A |
Application to the 400V-class motor
A system applying a
(1)install the LCR filter between the inverter and the motor,
(2)install the AC reactor between the inverter and the motor, or
(3)enhance the insulation of the motor coil.
Notes on Use
Drive
Run/Stop | Run or stop of the inverter must be done with the keys on the operator panel or through the control circuit terminal. Do not operate by | |
installing a electromagnetic contactor (MC) in the main circuit. | ||
| ||
Emergency motor stop | When the protective function is operating or the power supply stops, the motor enters the free run stop state. When an emergency | |
stop is required or when the motor should be kept stopped, use of a mechanical brake should be considered. | ||
| ||
| A max. 400Hz can be selected on the X200 Series. However, a | |
| extremely dangerous. Therefore, carefully make selection and settings by checking the mechanical strength of the motor and | |
connected machines. Consult the motor manufacturer when it is necessary to drive a standard | ||
| ||
| A full line of | |
|
|
Installation location and operating environment
Avoid installation in areas of high temperature, excessive humidity, or where moisture can easily collect, as well as areas that are dusty, subject to corrosive gasses, mist of liquid for grinding, or salt. Install the inverter away from direct sunlight in a
15