Effective in providing highly accurate control for applications such as printer The inverter performs short-time acceleration and deceleration with the maximum capacity by extending the time spec of overload current ratings compared with our previous models. This improves the operation efficiency of the equipment such as cutting machine or conveyance machine. Overload durability: 200% for 3 sec and 150% for 1 min. The standard model is available in two specifications concerning the operation load. When a remarkable load fluctuation occurs, the inverter provides the torque response in the class-top level. It controls the flux to minimize the fluctuation in the motor speed while suppressing the vibration. This function is best suited for the equipment that requires stable speed such as a cutting machine. It is possible to issue the speed command with the pulse train input (single-phase pulse and a sign of command value) from the pulse generator, etc. (Maximum pulse input: 100kHz The ratio operation is the function particularly convenient for adjusting two or more conveyance systems. The ratio of the main axis speed to the two or more trailing axes can be set as a frequency command. On the machine that handles load variation such as a conveyance machine, the conveyance speed can be adjusted easily. The PID value, calculated by comparing the target value and the feedback value, is added to or subtracted from the reference speed. Since the PID calculator gain (in proportional range) can be set to a low value, the inverter can be applied to the automatic control system that requires quick response such as a speed controller. (1) Analog inputs: voltage input through 2 terminals with polarity, current input through 1 terminal (2) Slow flowrate level stop function (Pressurized operation is possible before slow flowrate operation stop.) (3) Non-linear V/f pattern at 3 points (4) Dummy failure output function (5) Selection of up to the 4th motor (6) S-shape accel./decel. range setting (7) Detecting disconnection of the PID feedback This control function is best suited for the application that requires highly accurate positioning such as that of the conveyance machine. By combined use of the position control device (APR) and PG vector control, the position control accuracy has been remarkably improved. Shortened positioning time by this function will be helpful to reduce the tact time of a cycle. Example: Fixed length marking system Logic input/output can be easily created by parameter setting. This makes it possible to simplify the peripheral circuits. This function is effective in adjusting the stop timing or the braking torque when the equipment such as a conveyance machine is stopped by positioning of the motor. This function is helpful when torque is applied externally or holding torque is required during the stop time. The tact time per cycle will be reduced by shortened deceleration time.
Best vector control for the general-purpose inverter in the class
Ideal for highly accurate control such as positioning
PG vector control
Fuji’s original dynamic torque vector control has further evolved.
Improved durability in overload operation
Classification
Overload current rating
Major use
HD (High duty) spec
200% for 3 sec, 150% for 1 min
Operation under heavy load
MD (Middle duty) spec
150% for 1 min
Operation under constant torque load
LD (Low duty) spec
120% for 1 min
Operation under light load
Expanded capacity for the braking circuit built-in type
Maximizing the performance of a general-purpose motor
Quicker response to the operation commands
Accommodating various applications
Convenient function for operations at the specified speed
The pulse train input function is equipped as standard.
Ratio operation
Thorough protection of the braking circuit
Optimum function for preventing an object from slipping down
Dancer control function optimum for winding control
More functions are available to meet various requirements
MEGA World Keeps Expanding
PG option card for positioning control
The customized logic interface function is adopted in the inverter body. (Available soon)
Introducing servo lock function (PG option card).
Three-phase 200V series
HD (High Duty) spec for heavy load
Description
PDF File
FRENIC-MEGA Catalog
Besides the dynamic torque vector control, the inverter is equipped with the motor constant tuning for compensating even a voltage error of the main circuit devices and the magnetic flux observer of a new system. This realizes a high starting torque of 200% even at a low-speed rotation of 0.3Hz.
A brake circuit is built in the 22kW or smaller models as standard. These inverters are applicable to the machine that uses regenerative load such as a vertical conveyance machine.
(The 7.5kW or smaller models also incorporate a braking resistor.)
* The inverters with built-in brake circuit are available on request for 30kW to 55kW models in 200V series and 30kW to 110kW models in 400V series.
The terminal response to the operation commands has had an established reputation. FRENIC-MEGA has further shortened this response time, achieving the industry-top response time.
This function is effective in shortening the tact time per cycle and effective for use in the process including frequent repetitions.
The inverter protects the braking resistor by monitoring the braking transistor operation. The inverter outputs an exclusive signal on detection of the braking transistor abnormality. A circuit for shutting off the input power supply is provided outside of the inverter. When this signal is output, the power is shut off; thus protecting the braking circuit.
The reliability of the brake signal was increased for uses such as vertical conveyance. Conventionally, the current value and the frequency have been monitored when the brake signal is output. By adding a torque value to these two values, the brake timing can be adjusted more easily.
(*1)
Fuji's 4-pole standard motor.
(*2)
Rated capacity is calculated by assuming the output rated voltage as 220V for three-phase 200V series and 440V for three-phase 400V series.
(*3)
Output voltage cannot exceed the power supply voltage.
(*4)
When using the inverter in the ambient temperature of 40°C or over and with carrier frequency at 3kHz or higher, adjust the current under continuous running to be the value in ( ) or lower by controlling the load.
(*5)
The auxiliary power input is used as an AC fan power input when combining the unit such as high power factor PWM converter with power regenerative function. (Generally not used.)
(*6)
Interphase voltage unbalance ratio[%] = (max. voltage [V] - min. voltage [V])/3-phase average voltage [V]×67(See IEC61800-3.) Use the DC reactor (ACR: optional) when used with 2 to 3 % of unbalance ratio.
(*7)
The value is calculated on assumption that the inverter is connected with a power supply capacity of 500kVA (or 10 times the inverter capacity if the inverter capacity exceeds 50kVA) and %X is 5%.
(*8)
Obtained when a DC reactor (DCR) is used.
(*9)
Average braking torque obtained by use of a motor. (Varies with the efficiency of the motor.)
(*10)
The 55kW DC reactor (DCR) is optional with HD spec, and is provided as a standard accessory with LD spec.
