Toshiba VF-nC1 - Manual (Page 127)

E6581090
L-3
12
Item Specification
Control system Sinusoidal PWM control
Related output voltage Adjustable of output voltage in base frequency setting by the correcting supply
voltge (Unadjustable to any voltage higher than the input voltage).
Output frequency range 0.5 to 200Hz, default setting: 0.5 to 80Hz, maximum frequency: 30 to 200Hz.
Minimum setting steps
of frequency
operation panel setting, 0.2Hz: analog input (when the max. frequency is 100Hz).
Frequency accuracy Digital setting: within ±0.5% of the max. frequency (-10 to +50°C)
Analog setting: within ±1.0% of the max. frequency (25 °C ± 10°C)
Voltage/frequency
characteristics
V/f constant, Sensorless vector control, base frequency, base frequency voltage and
torque boost amount adjustable
Pr
in
ci
pa
l c
on
tr
ol
fu
nc
tio
ns
Frequency setting
signal
Potentiometer on the front panel, external frequency potentiometer (connectable to a
potentiometer with a rated impedance of 3-10kΩ), V1/S3 terminal (input impedance:
42kΩ (voltage: 0-10Vdc) or 250Ω (current: 4-20mAdc)). The characteristic can be
set arbitrarily by two-point setting.
Start-up frequency/
frequency jump
Adjustable within a range of 0.5 to 10Hz / Up to 1 frequency can be adjusted
together with their widths.
PWM carrier frequency
(Note 1)
Selectable from among 2, 4, 8, 12 and 16kHz (Standard default setting: 12kHz),
Selectable between fixed mode and auto-reduction mode
Acceleration/decelerati
on time
0.1 to 3000 seconds, switchable between acceleration/deceleration time 1 and 2.
Retry operation Number of times of retry selectable (Max. 10 times).
If the protection function is activated, the retry function restarts on completion of a
check of the main circuit.
Dynamic braking Charging of capacitor (Deceleration time can be shortened by activating Forced
Shortened Deceleration mode.)
Dynamic braking Driving circuit for braking resistor is not provided.
DC braking Braking start-up frequency: 0 to maximum frequency, braking rate: 0 to 100%,
braking time: 0 to 20 seconds.
Input terminal functions
(selectable)
Selectable from among 45 functions, such as forward/reverse run input signal, jog
run input signal, standby signal, preset-speed operation input signal, and reset input
signal (Also, selectable between sink/source)
Output terminal
functions (selectable)
Selectable from among 14 functions, such as frequency lower limit output signal,
frequency upper limit output signal, low-speed detection output signal, and specified
speed attainment output signal. Open collector and relay output possible
Failure detection signal 1c-contact output: 250Vac-1A- cos φ = 0.4
Op
er
ati
on
s
pec
ifi
ca
tio
ns
Output for frequency
meter/output for
ammeter
PWM output: (1mAdc full-scale DC ammeter or 7.5Vdc full-scale DC
ammeter/Rectifier-type AC voltmeter, 225% current Max. 1mAdc, 7.5Vdc full-scale)
Protective function Stall prevention, current limitation, over-current, output short circuit, over-voltage,
over-voltage limitation, undervoltage, ground fault, power supply phase failure,
output phase failure, overload protection by electronic thermal function, armature
over-load at start-up, load-side over-torque at start, overheating prevention,
detection of analog signal break.
Protection against
momentary power
failure
Auto-restart/non-stop control after momentary power failure.
Pr
ot
ec
tiv
e f
unc
tio
n
Electronic thermal
characteristics
Switching between standard motor/constant-torque VF motor, overload trip, overload
stall selection.
4-digit 7-segments
LED
Frequency: inverter output frequency.
Alarm : Stall alarm "C", overvoltage alarm "P", overload alarm "L", overheat alarm "H".
Status : Inverter status (frequency, cause of activation of protective function,
input/output voltage, output current, etc.) and parameter settings.
Free-unit display : Arbitrary unit (e.g. rotating speed) corresponding to output
frequency.
Di
sp
la
y f
unc
tio
n
Indicator Lamps indicating the inverter status by lighting or blinking, such as RUN lamp and
PRG lamp.
Use environments Indoor, altitude: 1000m (Max.), not exposed to direct sunlight, corrosive gas,
explosive gas or vibration (less than 5.9m/s 2 ) (10 to 55Hz).
Ambient temperature -10 to 50°C Note)1.2.3
Storage temperature -20 to +65°C
Envi
ronmen
t
Relative humidity 20 to 93% (free from condensation and vapor).
Note)1. Above 40°C: Remove the protective seal from the top of VF-nC1.
Note)2. When installing inverters side by side (without allowing space between them), detach the label on
the top surface of each inverter and use them where the ambient temperature is below 40°C.
Note)3. Single-phase 200V models (built-in EMI noise filter) should be used where the ambient
temperature will not rise above 40°C.