YASKAWA Varispeed f7 User Guide

Feature 1:
Precise control, functionality and flexibility
Feature 2:
Ecologically friendly
Feature 3:
User-friendly installation
and operation
Reliable energy saving function
The energy-saving control approches the maximum efficiency. Highly-efficient,
energy-saving operations are realized for any application using either the vector
control or the V/f control.
Low noise operation
With the low noise carrier PWM control for heavy duty mode as well as with the high
carrier PWM control for normal duty mode a considerable quiet motor operation is
achievable.
Suppression of harmonic distorsion
All inverters whith an output power of 22 kW and higher have a double diode
supply, for 12 pulse input, which makes it possible to suppress the harmonics to
about 12%. They are also equipped with a built-in DC bus reactor. For the inverters
below 22 kW the DC bus reactor is available as option.
Note: 12-pulse input requires a special transformer
Main Features of Varispeed F7 Inverter
High grade and good concentricity
Yaskawa's open loop vector control allows an excellent torque characteristic at a
speed ratio of 1:100. Hence at 0.5Hz, for example, more than 200% of the rated
torque is available.
Three autotuning functions
• The proven autotuning function with motor rotating (no load) during
measurement.
• New method which wieds similarly good result with motor at a standstill.
• Measurement of the motor resistance for simple applications.
High slip braking (HSB)
Yaskawa’s intelligent function allows up to 3 times faster braking without the use of a
braking transistor or resistor.
Braking transistor
This transistor is built in as standard in inverters of up to 18.5kW,
and is available as an external option for higher outputs. In conjunction with an
external braking resistor it achieves very powerful braking.
Improved protective functions
The high speed overcurrent limiting function allows virtually uninterrupted operation (no overcurrent tripping, restart
after momentary power loss, motor stall prevention, attempted restart after malfunction, etc).
CASE (Custom Application Software Environment)
makes it easy to customize the Varispeed F7 to the user or application requirements if they are not covered by the extensive
standard functions.
Speed search function
The Varispeed F7 determines the speed and direction of rotation of a coasting motor, then brings it to the required reference
speed. This is carried out extremely smoothly in both directions.
Easy to operate
• The Varispeed F7 can be fully controlled using the digital operator. The
operator is equipped with a parameter copy function and can even be
used up to 3m away with a standard cable. The LED display can be
read easily, even at a considerable distance.
• An optional LCD operator with plain text in 7 different languages and
the same functions is available.
Clear hierarchy of menus for setting parameters
Easy operation for fast start up and maintenance.
Quick program
Simplifies the start-up procedure by showing the most important para-
meters only.
Modified Parameters
Easy troubleshooting by checking the parameters modified from the
factory defaults.
Easily maintained
• The control terminal block can be disconnected from the motherboard.
This enables replacement of the inverter without disconnecting the
controlwiring.
• The inverter fan switches off when the motor is at a standstill. If neces-
sary, it can be replaced without dismantling the unit.
Feature 4:
Global specification
CE mark
for Europe
UL mark for Canada and the USA
250
200
150
100
50
0
Motor torque [%]
0.5 1.5 3 10
Motor torque [%]
Operating frequency [Hz]
Operating frequency [Hz]
Conformity with global standards for
worldwide use
Certified to UL/cUL and CE
Available worldwide
Worldwide service
Operation with commonly
used mains voltages
• Series for 400V (three phase)
380 to 480V +10% -15%
• Series for 200V (three phase)
200 to 240V +10% - 15%
Global fieldbus standards
supported
• RS-485/422 (MEMOBUS protocol)
supported as standard
• Optional cards available for Profibus-DP,
INTERBUS-S, CANopen and DeviceNet
(LONworks, CC Link & ControlNet)
Mains current
without suppression
of harmonic distorsion
Mains current with
12 pulse method
(%) 100
80
60
40
20
0 20 40 60 80 100 (%)
Damper control at 60Hz
Control with Varispeed F7
Load
Econimic efficiency
CUS
LISTED

YASKAWA Varispeed f7 Specifications

General

Brand	YASKAWA
Model	Varispeed f7
Category	Inverter
Language	English