MITSUBISHI inverter FR-D720 series.
Voltage level: three phase 200V.
Frequency converter capacity: 7.5KW.
Vector control variable frequency speed control is the practice of the asynchronous motor in the three-phase coordinate system of the stator current Ia, Ib, Ic, through the three-phase to two-phase transformation,
The alternating current of Ia1Ib1 is equivalent to a two phase stationary coordinate system, and then is rotated by the rotor field oriented,
Equivalent to the DC current Im1, It1 (Im1 equivalent to DC motor excitation current in synchronous rotating coordinate system;
It1 equal to the armature current proportional to the torque, and then imitate the DC motor control method, to obtain the DC motor control,
The control of asynchronous motor is realized through the corresponding inverse coordinate transformation FR-E5NF-H7 FR-E5NF-H7 FR-E5NF-H7.5K5K Manual FR-E5NF-H7.5K Safety instruction. 5K Manual FR-E5NF-H7.5K Safety instruction. "Power: 30kw.
Voltage: 400V.
Brake resistor, a kind of ripple resistance, is mainly used in the mechanical system of the inverter to control the speed of the motor,
Help the motor to be converted into heat energy due to the regenerative power of the motor.
Braking unit principle: the brake unit is composed of a high power transistor GTR and its driving circuit FR-E5NF-H7.5K Manual FR-E5NF-H7.5K Safety instruction.
Its function is to link the discharge current braking resistor capacitor voltage or not in the range of the time consumed and the DC part "overpressure",
Need to add external braking components, in order to speed up the speed of the consumption of renewable energy. "MITSUBISHI inverter FR-L740 series.
Voltage level: three phase 400V.
Frequency converter capacity: 45KW.
Integration of the three works the core technology, the outstanding performance of reeling, release the high cost of bright light.
Wide range of professional use and advanced control.
Professional built-in function to ensure the constant material tension, suitable for the application of printing and packaging industry.
Fusion appplication of the tension products of MITSUBISHI by inverter FR-E5NF-H7.5K Manual FR-E5NF-H7.5K Safety instruction.
Suitable for tension control of high precision cable and material processing occasions.
Professional function to ensure the safe operration of textile machinery equipment,
The spinning quality and production efficiency are improved FR-E5NF-H7.5K Manual FR-E5NF-H7.5K Safety instruction. The application of textile machinery and equipment.