VF-8X
Series
Super reliable, powerful and
quiet operation inverters
1
Safety
■ Product conforming to the EC Low
Voltage Directive (TÜV-approved product)
• Conforms to DIN VDE 0160
■ Product conforming to the UL standard
■ Accident prevention system
• Data lock function controlled by password
■ Also conforms to the EMC Directive
• By combination use with EMI filter
■ Programmable password for
operational integrity
■ Electronic thermal overload
Operability
• Easy to operate by means of Digital Parameter Programming
on operation panel.
• Enhanced monitoring features and space saving design.
• Super compact design with very powerful and extensive
parameters.
Functions
• Matsushita’s unique PWM control for good low speed torque
and control.
• Programmable 15.0kHz carrier frequency, low acoustic
noise.
■Frequency Skip Feature:
Vibrations resulting from resonance with associated facilities
are prevented by skipping resonant frequencies. Up to three
frequencies can be skipped, and skip frequency span is user
adjustable.
■Max. Output Voltage Setting:
The inverter output voltage can be adjusted by AVR
(Automatic Voltage Regulator).
■Jog Operation:
Select either local or external jog operation, for which
acceleration/deceleration time can be independently
specified.
■Smooth Operation at Low Frequencies:
Our unique PWM control method ensures smooth operation in
the low frequency range with minimum torque ripple.
■Overload Function Protection:
Complete motor overload protection over a wide range of
operating conditions by selection of device functions
according to motor characteristics.
■Ride-Through Restart Capability:
Restarts after power failures or surges can be programmed in
different modes depending on load or system conditions. A
wait time programming feature is also included.
Device Features
■Extensive Frequency Range Selection:
Frequency range selectable for 50/60 Hz and from 50 to 400
Hz independent of maximum output frequency (50 to 400 Hz).
Constant torque and low torque modes can also be selected.
■Powerful Acceleration/Deceleration:
Torque boost capability offers powerful acceleration at
optimum V/F ratio. In addition, the stall prevention feature
greatly reduces inverter trips during rapid acceleration or
deceleration.
System Features
■Operation Status Feedback:
Provides run, arrival, frequency detection and fault alarm
signals. The user can create commands for the next process
step using those signals.
■Acceleration/Deceleration linked with
Multispeed Operation:
In addition to multispeed (eight speeds) and multi-
acceleration/deceleration rates (four rates), this device
enables combination of those rates (four speeds) with link
capability. Flexible speed/acceleration/deceleration
combinations allow easy system design.
■Wide Choice of Speed Control:
Motor speed can be controlled with external analog signal,
manual control or in two to eight steps with external switching
signal.
■DC Brake Range and Time Adjustment:
To ensure reliable stopping during deceleration, DC braking
can be activated when output frequency is reduced below the
specified stop frequency (0.5 to 60 Hz). The DC brake
application time can be adjusted from 0 to 30 seconds.
■Master-Slave (Proportional) Operation:
The 0-5 V output signal and bias gain features allow
proportional operations for up to five inverters. This makes
transfer system construction easier.
■More practical and effective application by
combination use with PLC.
400V 7.5kW
400V 15kW
400V 22kW