MITSUBISHI inverter FR-A740 series.
Voltage level: 3 phase 400V.
Frequency converter capacity: 75KW.
Frequency converter is the application of frequency conversion technology and micro electronics technology, by changing the motor operating power frequency mode to control the AC motor power control equipment.
The converter is composed of rectifier (AC), filter, inverter (DC), braking unit, driving unit, micro processing unit of the detection unit FX-2AD-PT
Inverter by the internal IGBT to adjust the output power supply voltage and frequency,
According to the actual needs of the motor to provide the required power supply voltage, and then achieve the purpose of energy saving, speed control, in addition to the,
Inverter has a lot of protection functions, such as over current, over voltage, overload protection and so on. Drive: MR-H_ACN series built-in positioning function.
Rated output: 5.0KW.
In servo drive speed closed loop,
Rotor speed measurement accuracy is very important to improve the dynamic and static characteristics of the speed control loop.
In order to seek the balance between measurement precision and system cost, incremental photoelectric encoder is generally used as the speed measuring sensor,
The corresponding method is M/T velocity measurement.
Although the M/T measurement method has a certain measurement accuracy and a wide range of measurement,
But this method has its inherent defects,
Mainly includes: the measurement period must be detected at least one complete encoder pulse, limiting the minimum detectable speed.
2 control system for speed control of the timer switch is difficult to maintain synchronization,
Can not guarantee the accuracy of measurement in the situation where the speed change is larger.
Therefore, it is difficult to improve the speed tracking and control performance of servo drive by using the traditional speed loop design method. Motor series: low inertia, medium capacity.
Rated output power: 30.0kw.
Rated speed: 2000rpm.
With the brake: without.
Shaft end: straight shaft.
Brushless motor has small size, light weight, large output, fast response, high speed, small inertia, smooth rotation, and stable torque.
Control is complex, easy to realize intelligent, and its electronic commutation method is flexible, can square wave commutation or sine wave commutation.
Motor maintenance free, high efficiency, low operating temperature, electromagnetic radiation is very small, long life, can be used for a variety of environments.
AC servo motor is brushless motor, which is divided into synchronous and asynchronous motor,
At present, the general use of synchronous motor control, which is a large range of power,
Can do a lot of power.
Large inertia, the maximum rotation speed is low, and with the increase of power and rapid reduction.
So it is suitable for the application of low speed and stable operation.
FX-2AD-PT Operation manual/Instructions/Model selection sample download link: /searchDownload.html?Search=FX-2AD-PT&select=5