Toshiba VF-MB1
- SLIM SHAPE BODY
- FLEXIBLE OPERATION
- ADVANCED MOTOR DRIVE
- EASY for ADVANCED CONTROL
MB1 Toshiba VFD
Control system: Sinusoidal PWM control
Output voltage range: Adjustable within the range of 50 to 330V (240V class) and 50 to 660V (500V class) by correcting the supply voltage
Output frequency range: 0.1 to 500.0Hz, default setting: 0.5 to 80Hz, maximum frequency: 30 to 500Hz
Minimum setting steps of frequency: 0.1Hz: analog input (when the max. frequency is 100Hz), 0.01Hz: Operation panel setting and communication setting.
Frequency accuracy
Digital setting: within ±0.01% of the max. frequency (-10 to +60°C)
Analog setting: within ±0.5% of the max. frequency (25°C ±10°C)
Voltage/frequency characteristics: V/f constant, variable torque, automatic torque boost, vector control, automatic energy-saving. dynamic automatic energy-saving control, PM motor control, V/F 5-point setting, Auto-tuning. Base frequency (20-500Hz) adjusting to 1 & 2, torque boost (0-30%) adjusting to 1 & 2, adjusting frequency at start (0.1-10Hz)
Frequency setting signal: Setting dial on the front panel, external frequency potentiometer (connectable to a potentiometer with a rated impedance of 1k-10kΩ), 0-10Vdc / -10-+10Vdc (input impedance: 30kΩ), 4-20mAdc (Input impedance: 250Ω).
Terminal board base frequency: The characteristic can be set arbitrarily by two-point setting. Possible to set: analog input (VIA, VIB, VIC).
Frequency jump: Three frequencies can be set. Setting of the jump frequency and the range.
Upper- and lower-limit frequencies: Upper-limit frequency: 0 to max. frequency, lower-limit frequency: 0 to upper-limit frequency
PWM carrier frequency: Adjustable range of 2.0k to 16.0kHz (default: 4.0kHz).
PID control: Setting of proportional gain, integral gain, differential gain and control waiting time. Checking whether the amount of processing amount and the amount of feedback agree.
Acceleration/deceleration time: Selectable from among acceleration/deceleration times 1 & 2 & 3 (0.0 to 3600 sec.). Automatic acceleration/deceleration function. S-pattern acceleration/deceleration 1 & 2 and S-pattern adjustable. Control of forced rapid deceleration and dynamic rapid deceleration.
DC braking:
Braking start-up frequency: 0 to maximum frequency, braking rate: 0 to 100%, braking time: 0 to 25.5 seconds, emergency DC braking, motor shaft fixing control.
Dynamic Braking Drive Circuit: Control and drive circuit is built in the inverter with the braking resistor outside (optional).
Input terminal function (programmable) : Possible to select from among about 110 functions, such as forward/reverse run signal input, jog run signal input, operation base signal input and reset signal input, to assign to 8 input terminals. Logic selectable between sink and source.
Output terminal functions (programmable): Possible to select from among about 150 functions, such as upper/lower limit frequency signal output, low speed detection signal output, specified speed reach signal output and failure signal output, to assign to FL relay output, open collector output terminal, and RY output terminals.
Forward/reverse run: The RUN and STOP keys on the operation panel are used to start and stop operation, respectively.
Forward/reverse run: possible through communication and logic inputs from the terminal block.
Jog run: Jog mode, if selected, allows jog operation from the terminal board and also from remote keypad.
Preset speed operation: Frequency references + 15-speed operation possible by changing the combination of 4 contacts on the terminal board.
Retry operation: Capable of restarting automatically after a check of the main circuit elements in case the protective function is activated. 10 times (Max.) (selectable with a parameter)
Various prohibition settings/ Password setting: Possible to write-protect parameters and to prohibit the change of panel frequency settings and the use of operation panel for operation, emergency stop or resetting. Possible to write-protect parameters by setting 4 digits password and terminal input.
Regenerative power ridethrough control: Possible to keep the motor running using its regenerative energy in case of a momentary power failure (default:OFF).
Auto-restart operation: In the event of a momentary power failure, the inverter reads the rotational speed of the coasting motor and outputs a frequency appropriate to the rotational speed in order to restart the motor smoothly. This function can also be used when switching to commercial power.
Light-load high-speed operation: Increases the operating efficiency of the machine by increasing the rotational speed of the motor when it is operated under light load.
Drooping function: When two or more inverters are used to operate a single load, this function prevents load from concentrating on one inverter due to unbalance.
Override function: External input signal adjustment is possible to the operation frequency command value.
Relay output signal: 1c- contact output and 1a- contact output Maximum switching capacity : 250Vac-2A , 30Vdc-2A (At resistive load cosΦ=1), 250Vac-1A (cosΦ=0.4) , 30Vdc-1A (L/R=7ms) Minimum permissible load : 5Vdc-100mA, 24Vdc-5mA
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