Toshiba VF-nC1 User Manual download pdf (Page 127)

E6581090

L-3

Item Specification

Control system Sinusoidal PWM control

Related output volta

eAdjustable of output voltage in base frequency setting by the correcting supply

voltge (Unadjustable to any voltage higher than the input voltage).

Output frequenc

ran

e0.5 to 200Hz, default setting: 0.5 to 80Hz, maximum frequency: 30 to 200Hz.

Minimum setting steps

of frequency

operation panel settin

, 0.2Hz: analo

input

(

when the max. frequenc

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 frequenc

, base frequenc

volta

e and

torque boost amount adjustable

Principal control functions

Frequency setting

signal

Potentiometer on the front panel, external frequenc

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 frequenc

(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 si

nal, standb

nal, preset-speed operation input si

nal, 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,

frequenc

upper limit output si

nal, low-speed detection output si

nal, and specified

speed attainment output signal. Open collector and relay output possible

Failure detection si

nal 1c-contact output: 250Vac-1A- cos

= 0.4

Operation specifications

Output for frequency

meter/output for

ammeter

PWM output: (1mAdc full-scale DC ammeter or 7.5Vdc full-scale DC

ammeter/Rectifier-t

pe 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.

Protective function

Electronic thermal

characteristics

Switchin

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", overvolta

e 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.

Display function

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

) (10 to 55Hz).

Ambient temperature-10 to 50°C Note)1.2.3

Storage temperature -20 to +65°C

Environment

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.

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Toshiba VF-nC1 User Manual Page 127

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