Toshiba TOSVERT VF-nC3E User manual

II
1
2
3
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E6581975
Read first
I
Safety
precautions
Introduction
Contents
Connection
Operations
Setting
parameters
Main
parameters
Other
parameters
Operation
with external
signal
Monitoring the
operation status
Peripheral
devices
Table of
parameters
and data
Before Contacting
your Toshiba
distributor
Specifications
Inspection and
maintenance
Warranty
Appendix
Disposal of the
inverter
NOTICE
1.Make sure that this instruction manual is delivered to the
end user of the inverter unit.
2.Read this manual before installing or operating the inverter
unit, and store it in a safe place for reference.
Instruction Manual
<Detailed manual>
3-phase 400V class 0.4 to 0.11kW
Industrial Inverter
(For 3-phase induction motors)
Industrial Inverter Instruction Manual
TOSVERT VF-nC3C
TOSHIBA INDUSTRIAL PRODUCTS
AND SYSTEMS CORPORATION
Motor Drive Division
580, Horikawa-cho, Saiwai-Ku, Kawasaki, Kanagawa
212-0013 Japan
TEL : [phone]
FAX : [phone]
https://www.toshiba-tips.co.jp/en/contact/eu.html
For further information, please contact to nearest Toshiba Representative or Motor Drive Division, Global Sales Department – Producer Goods.
The data in this manual are subject to change without any notice.
Published in 03/2018
TOSHIBA INTERNATIONAL CORPORATION
13131 West Little York RD., Houston
TX 77041, U.S.A
TEL：[phone]
FAX：[phone]
TOSHIBA INDUSTRIAL PRODUCTS AND SYSTEMS
SHANGHAI CORPORATION
Raffles City (Office Tower), No. 268,
XizangMiddle Road, Huangpu District, Shanghai,
P.R.China
TEL：[phone]
FAX：[phone]
TOSHIBA ASIA PACIFIC PTE LTD
20 Pasir Panjang Road #12-25/28,
Mapletree Business City, Singapore 117439
TEL：[phone]
FAX：[phone]
TOSHIBA INTERNATIONAL CORPORATION PTY LTD
11A Gibbon Road, Winston Hills, Sydney, NSW 2153,
Australia
TEL：[phone]
FAX：[phone]
TOSHIBA INDIA PRIVATE LIMITED
3RD Floor, Building No.10, Tower B, Phase-II,
DLF Cyber City, Gurgaon-122022, Haryana, India
TEL：[phone]
FAX：[phone]
TOSHIBA GULF FZE
P.O.Box 61028, Jebel Ali, Free Zone, Dubai, U.A.E
TEL：[phone]
FAX：[phone]
32666_01_VF-nC3C_E_cover01-04
http://sp-t.ru Для заказов : Email: [email protected] Телефоны :
[phone], 8-800-511-65-88(Бесплатно по РФ)
E6582233
Monitoring inverter
status in operation /
before tripping
3-phase 400V class 0.4 to 11kW

E6582233
1
I
I. Safety precautions
The items described in these instructions and on the inverter itself are very important so that you can use the
inverter safely, prevent injury to yourself and other people around you as well as to prevent damage to property in
the area. Thoroughly familiarize yourself with the symbols and indications shown below and then continue to read
the manual. Make sure that you observe all warnings given.
Explanation of markings
Markin
g
Meanin
g
of markin
g
Warning Indicates that errors in operation may lead to death or serious injury.
Caution
Indicates that errors in operation may lead to injury (*1) to people or that these errors may
cause damage to physical property. (*2)
(*1) Such things as injury, burns or shock that will not require hospitalization or long periods of outpatient
treatment.
(*2) Physical property damage refers to wide-ranging damage to assets and materials.
Meanings of symbols
Markin
g
Meanin
g
of markin
g
Indicates prohibition (Don't do it).
What is prohibited will be described in or near the symbol in either text or picture form.
Indicates an instruction that must be followed.
Detailed instructions are described in illustrations and text in or near the symbol.
-Indicates warning.
What is warned will be described in or near the symbol in either text or picture form.
-Indicates caution.
What the caution should be applied to will be described in or near the s
y
mbol in either text or picture form.

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2
I Safety precautions (Limits in purpose)
Our inverters are designed to control the speeds of three-phase induction motors for general industry.
Single-phase power input is output by the inverter as three-phase output and cannot drive a single-phase motor.
Safety precautions
▼This product is an electronic component for general industrial uses in industrial application.
It cannot be used for applications where may cause a significant public impact, such as power stations and
railways, and for uses that will require special quality control or warranty.
Neither is it applicable to equipment (for nuclear power, airplanes, aerospace, public transport, life support,
surgeries and various safety and entertainment devices) to which the failure or malfunction of this product
could pose a direct risk or threat to human life.
If you wish to use the product for limited purposes and the product is understood to require no special quality
control or warranty, please contact us before purchase to evaluate if the usage is applicable.
▼Please ensure in advance that the product is appropriately placed and installed in your own device or system,
fulfilling the intended purpose. The equipment designer or the customers who assembles the final product
shall be held liable for the selection and application of the product. We are not responsible for how the product
is incorporated into the final system design.
When using the product, please systematically back up your data or safety devices so that any failure or
malfunction of the product will not cause any significant accidents.
▼Even if the product is found to be inapplicable for conditions above after purchasing or using the product, the
product will remain inapplicable for such conditions.
▼Do not use the product for any load other than with general industry three-phase induction motors.
Single-phase power input is output by the inverter as three-phase output and cannot drive a single-phase motor.
▼Please read the instruction manual carefully before installing or operating the product and use it properly.

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3
I
General Operation
Warning Reference
section
Disassembly
prohibited
Never disassemble, modify or repair.
This can result in electric shock, fire and injury. Call your Toshiba distributor for repairs.
2.
Prohibited
Do not open the terminal block cover while the inverter is on.
The unit contains many high voltage parts and contact with them will result in electric shock.
Do not stick your fingers into openings such as cable wiring holes and cooling fan covers.
This can result in electric shock or other injury.
Do not place or insert any kind of object into the inverter (electrical wire cuttings, rods, wires
etc.).
This can result in electric shock or fire.
Do not allow water or any other fluid to come in contact with the inverter.
This can result in electric shock or fire.
2.1
2.
2.
2.
Mandatory
action
After replacing the terminal block cover, turn the input power on.
Turning on the input power without replacing the terminal block cover may lead to electric
shock.
If the inverter begins to emit smoke or an unusual odor, or unusual sounds, immediately
turn power off.
If the equipment is continued in operation in such a state, the result may be fire. Call your
Toshiba distributor for repairs.
Always turn power off if the inverter is not used for long periods of time since there is a
possibility of malfunction caused by leaks, dust and other material. If power is left on with
the inverter in that state, it ma
y
result in fire.
2.1
3.
3.
Caution Reference
section
Contact
prohibited
Do not touch heat radiating fins or discharge resistors.
These devices are hot, and you'll get burned if you touch them. 3.
Mandatory
action
Use an inverter that conforms to the specifications of power supply and three-phase
induction motor being used. If the inverter being used does not conform to those
specifications, not only will the three-phase induction motor not rotate correctly, it
may also cause serious accidents through overheating and fire.
1.1

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4
I Transportation & installation
Warning Reference
section
Prohibited
Do not install or operate the inverter if it is damaged or any component is missing.
This can result in electric shock or fire. Call your Toshiba distributor for repairs.
Do not place any inflammable objects nearby.
If a flame is emitted due to malfunction, it may result in a fire.
Do not install in any location where the inverter could come into contact with water or
other fluids.
This can result in electric shock or fire.
1.4.4
1.4.4
1.4.4
Warning Reference
section
Mandatory
action
Must be used in the environmental conditions prescribed in the instruction manual.
Use under any other conditions may result in malfunction.
Mount the inverter on a metal plate.
The rear panel gets very hot. Do not install in an inflammable object, this can result in fire.
Do not use the inverter without the terminal block cover. This can result in electric shock.
Failure to do so can lead to risk of electric shock and can result in death or serious injury.
An emergency stop device must be installed that fits with system specifications (e.g. shut
off input power then engage mechanical brake). Operation cannot be stopped immediately
by the inverter alone, thus risking an accident or injury.
All options used must be those specified by Toshiba.
The use of any other option may result in an accident.
When using switchgear for the inverter, it must be installed in a cabinet.
Failure to do so can lead to risk of electric shock and can result in death or serious in
j
ur
y
.
1.4.4
1.4.4
1.4.4
1.4.4
1.4.4
9.
Caution Reference
section
Prohibited
When transporting or carrying, do not hold by the front panel covers.
The covers may come off and the unit will drop out resulting in injury.
Do not install in any area where the unit would be subject to large amounts of vibration.
That could result in the unit fallin
g
, resultin
g
in in
j
ur
y
.
2.
1.4.4
Mandatory
action
When removing and installing the terminal cover with a screwdriver, be sure not to scratch
your hand as this results in injury.
Pressing too hard on the screwdriver may scratch the inverter.
Always cut the power supply when removing the wiring cover.
After wiring is complete, be sure to replace the terminal cover.
The main unit must be installed on a base that can bear the unit's weight.
If the unit is installed on a base that cannot withstand that weight, the unit may fall
resulting in injury.
If braking is necessary (to hold motor shaft), install a mechanical brake.
The brake on the inverter will not function as a mechanical hold, and if used for that
pu
r
pose, in
j
ur
y
ma
y
result.
1.3.2
1.3.2
1.3.2
1.3.2
1.4.4
1.4.4

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5
I
Wiring
Warning Reference
section
Prohibited
Do not connect input power to the output (motor side) terminals (U/T1,V/T2,W/T3).
That will destroy the inverter and may result in fire.
Within 15 minutes after turning off input power, do not touch wires of devices (MCCB)
connected to the input side of the inverter.
That could result in electric shock.
2.2
2.2
Warning Reference
section
Mandatory
action
Electrical installation work must be done by a qualified expert.
Connection of input power by someone who does not have that expert knowledge may
result in fire or electric shock.
Connect output terminals (motor side) correctly.
If the phase sequence is incorrect, the motor will operate in reverse and that may result in
injury.
Wiring must be done after installation.
If wiring is done prior to installation that may result in injury or electric shock
The following steps must be performed before wiring.
(1) Turn off all input power.
(2) Wait at least 15 minutes and check to make sure that the charge lamp is no longer lit.
If these steps are not properly performed, the wiring will cause electric shock.
Tighten the screws on the terminal board to specified torque.
If the screws are not tightened to the specified torque, it may lead to fire.
Check to make sure that the input power voltage is +10%, -15% of the rated power
voltage written on the rating label (±10% when the load is 100% in continuous operation).
If the input power voltage is not +10%, -15% of the rated power voltage (±10% when the
load is 100% in continuous operation) this may result in fire.
Set a parameter f109 when VIAor VIB terminals are used as logic input terminal.
If it is not set, it could result in malfunction.
2.1
2.1
2.1
2.1
2.1
1.4.4
2.2
Be Grounded
Ground must be connected securely.
If the ground is not securely connected, it could lead to electric shock or fire when a
malfunction or current leak occurs.
2.1
2.2
9.
Caution Reference
section
Prohibited
Do not attach equipment (such as noise filters or surge absorbers) that have built-in
capacitors to the output (motor side) terminals.
That could result in a fire.
2.1

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6
I Operations
Warning Reference
section
Prohibited
Never touch the internal terminals in the upper right while the front cover is open.
There is a risk of shock because it carries a high voltage.
1.3.1
Warning Reference
section
Prohibited
Do not touch inverter terminals when electrical power is going to the inverter even if the
motor is stopped.
Touching the inverter terminals while power is connected to it may result in electric shock.
Do not touch switches when the hands are wet and do not try to clean the inverter with a
damp cloth.
Such practices may result in electric shock.
Do not go near the motor in alarm-stop status when the retry function is selected.
The motor may suddenly restart and that could result in injury.
Take measures for safety, e.g. attaching a cover to the motor, against accidents when the
motor unexpectedl
y
restarts.
3.
3.
3.
Mandatory
action
After replacing the terminal block cover, turn the input power on.
When installed inside a cabinet and using with the front cover removed, always close the
cabinet doors first and then turn power on. Turning on the power with the terminal block
cover or cabinet doors open may result in electric shock.
Make sure that operation signals are off before resetting the inverter after malfunction.
If the inverter is reset before turning off the operating signal, the motor may restart
suddenl
y
causin
g
in
j
ur
y
.
3.
3.
Caution Reference
section
Prohibited
Observe all permissible operating ranges of motors and mechanical equipment. (Refer to
the motor's instruction manual.)
Not observing these ranges may result in injury.
Do not set the stall prevention level () extremely low.
If the stall prevention level parameter () is set at or below the no-load current of
the motor, the stall preventive function will be always active and increase the frequency
when it judges that regenerative braking is taking place.
Do not set the stall prevention level parameter () below 30% under normal use
conditions.
3.
6.18.2
Mandatory
action
Use an inverter that conforms to the specifications of power supply and three-phase
induction motor being operated. If the inverter being used does not conform to those
specifications, not only will the three-phase induction motor not rotate correctly, but it may
cause serious accidents through overheating and fire.
Current may leak through the inverter's input/output wires because of insufficient
electrostatic capacity on the motor with bad effects on peripheral equipment.
The leakage current’s value is affected by the carrier frequency and the length of the
input/output wires. Test and adopt the remedies of section 1.4.3 a
g
ainst leak current.
1.4.1
1.4.3

E6582233
7
I
When operation by using remote keypad is selected
Warning Reference
section
Mandatory
action
Set the parameter Communication time-out time (f803) and Communication time-out
action (f804).
If these are not properly set, the inverter can not be stopped immediately in breaking
communication and this could result in injury and accidents.
An emergency stop device and the interlock that fit with system specifications must be
installed.
If these are not properly installed, the inverter can not be stopped immediately and this
could result in in
j
ur
y
and accidents.
6.21
6.21
When sequence for restart after a momentary failure is selected (inverter)
Caution Reference
section
Mandatory
action
Stand clear of motors and mechanical equipment.
If the motor stops due to a momentary power failure, the equipment will start suddenly
after power recovers. This could result in unexpected injury.
Attach caution label about sudden restart after a momentary power failure on inverters,
motors and equipment for prevention of accidents in advance.
6.13.1
6.13.1
When retry function is selected (inverter)
Caution Reference
section
Mandatory
action
Stand clear of motors and equipment.
If the motor and equipment stop when the alarm is given, selection of the retry function will
restart them suddenly after the specified time has elapsed. This could result in unexpected
injury.
Attach caution label about sudden restart in retry function on inverters, motors and
equipment for prevention of accidents in advance.
6.13.3
6.13.3
Maintenance and inspection
Warning Reference
section
Prohibited
Do not replace parts.
This could be a cause of electric shock, fire and bodily injury. To replace parts, call your
Toshiba distributor.
13.2
Mandatory
action
The equipment must be inspected every day.
If the equipment is not inspected and maintained, errors and malfunctions may not be
discovered and that could result in accidents.
Before inspection, perform the following steps.
(1) Turn off all input power to the inverter.
(2) Wait at least 15 minutes and check to make sure that the charge lamp is no longer lit.
If inspection is performed without performing these steps first, it could lead to electric
shock.
13.
13.
13.2

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8
I Disposal
Caution Reference
section
Mandatory
action
If you dispose of the inverter, have it done by a specialist in industry waste disposal(*).
If you dispose of the inverter in an inappropriate way, this can result in explosion of
capacitor or produce noxious gases, resulting in injury.
(*) Persons who specialize in the processing of waste and known as "industrial waste
product collectors and transporters" or "industrial waste disposal persons. "If the
collection, transport and disposal of industrial waste is done by someone who is not
licensed for that job, it is a punishable violation of the law. (Laws in regard to cleaning
and processin
g
of waste materials
)
15.
Attach caution labels
Shown here are examples of warning labels to prevent, in advance, accidents in relation to inverters, motors and other
equipment.
Be sure to affix the caution label where it is easily visible when selecting the auto-restart function (6.13.1) or the retry
function (6.13.3).
If the inverter has been programmed for restart
sequence of momentary power failure, place warning
labels in a place where they can be easily seen and
read.
(Example of caution label)
If the retry function has been selected, place warning
labels in a location where they can be easily seen and
read.
(Example of caution label)
Caution (Functions
p
r
ogrammed fo
r
restart)
Do not go near motors and equipment.
Motors and equipment that have stopped
temporarily after momentary power failure will
restart suddenl
y
after recover
y
.
Caution (Functions
p
r
ogrammed for retry)
Do not go near motors and equipment.
Motors and equipment that have stopped
temporarily after an alarm will restart suddenly
after the specified time has elapsed.

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9
II II. Introduction
Thank you for your purchase of the Toshiba "TOSVERT VF-nC3E” industrial inverter.
This instruction manual is for the Ver. 102 or later CPU of the inverter.
Please be informed that CPU version will be frequently upgraded.

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i
 Contents 
I Safety precautions.........................................................................................................................................................1
II Introduction....................................................................................................................................................................8
1. Read first.......................................................................................................................................................................A-1
1.1 Check product purchase....................................................................................................................................A-1
1.2 Contents of the product .....................................................................................................................................A-2
1.3 Names and functions.........................................................................................................................................A-3
1.4 Notes on the application....................................................................................................................................A-13
2. Connection ....................................................................................................................................................................B-1
2.1 Cautions on wiring.............................................................................................................................................B-1
2.2 Standard connections........................................................................................................................................B-3
2.3 Description of terminals.....................................................................................................................................B-6
3. Operations.....................................................................................................................................................................C-1
3.1 Simplified Operation of the VF-nC3E.................................................................................................................C-2
3.2 How to operate the VF-nC3E.............................................................................................................................C-7
3.3 Meter setting and adjustment ............................................................................................................................C-11
3.4 Setting the electronic thermal............................................................................................................................C-14
3.5 Preset-speed operation (speeds in 15 steps) ....................................................................................................C-19
4. Setting parameters ........................................................................................................................................................D-1
4.1 Setting and Display Modes................................................................................................................................D-1
4.2 How to set parameters.......................................................................................................................................D-3
4.3 Functions useful in searching for a parameter or changing a parameter setting................................................D-7
4.4 EASY key function.............................................................................................................................................D-12
5. Main parameters............................................................................................................................................................E-1
5.1 Searching for changes using the history function..............................................................................................E-1
5.2 Setting a parameter using the guidance function...............................................................................................E-2
5.3 Setting acceleration/deceleration time...............................................................................................................E-5
5.4 Increasing starting torque ..................................................................................................................................E-7
5.5 Selection of operation mode..............................................................................................................................E-10
5.6 Meter setting and adjustment ............................................................................................................................E-13
5.7 Forward/reverse run selection (Panel keypad)..................................................................................................E-13
5.8 Maximum frequency ..........................................................................................................................................E-14
5.9 Upper limit and lower limit frequencies..............................................................................................................E-15
5.10 Base frequency..................................................................................................................................................E-16
5.11 Selecting control mode......................................................................................................................................E-17
5.12 Manual torque boost - increasing torque boost at low speeds...........................................................................E-23

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ii
5.13 Setting the electronic thermal.............................................................................................................................E-24
5.14 Preset-speed operation (speeds in 15 steps).....................................................................................................E-24
5.15 Standard default setting .....................................................................................................................................E-24
5.16 Registered parameters display selection ...........................................................................................................E-24
6. Other parameters...........................................................................................................................................................F-1
6.1 Input/output parameters.....................................................................................................................................F-1
6.2 Input signal selection..........................................................................................................................................F-4
6.3 Terminal function selection.................................................................................................................................F-7
6.4 Basic parameters 2............................................................................................................................................F-9
6.5 V/f 5-point setting...............................................................................................................................................F-11
6.6 Setting frequency command ..............................................................................................................................F-11
6.7 Operation frequency...........................................................................................................................................F-18
6.8 DC braking.........................................................................................................................................................F-19
6.9 Time limit for lower-limit frequency operation.....................................................................................................F-20
6.10 Jump frequency - Avoiding frequency resonance...............................................................................................F-21
6.11 Preset-speed frequencies..................................................................................................................................F-21
6.12 PWM carrier frequency ......................................................................................................................................F-22
6.13 Trip-less intensification.......................................................................................................................................F-24
6.14 Braking function .................................................................................................................................................F-35
6.15 PID control .........................................................................................................................................................F-36
6.16 Setting motor constants......................................................................................................................................F-41
6.17 2nd acceleration/deceleration ............................................................................................................................F-44
6.18 Protection functions............................................................................................................................................F-47
6.19 Adjustment parameters......................................................................................................................................F-58
6.20 Operation panel parameter................................................................................................................................F-60
6.21 Communication function (RS485) ......................................................................................................................F-67
6.22 Free notes..........................................................................................................................................................F-73
7. Operations with external signal......................................................................................................................................G-1
7.1 Operating external signals .................................................................................................................................G-1
7.2 Applied operations by an I/O signal (operation from the terminal block) ............................................................G-2
7.3 Speed instruction (analog signal) settings from external devices.......................................................................G-10
8. Monitoring the inverter status in operation / before tripping ...........................................................................................H-1
8.1 Flow of status monitor mode..............................................................................................................................H-1
8.2 Status monitor mode..........................................................................................................................................H-2
8.3 Display of trip information...................................................................................................................................H-6
9. Peripheral devices..........................................................................................................................................................I-1
9.1 Selection of wiring materials and devices ..........................................................................................................I-1
9.2 Installation of a magnetic contactor....................................................................................................................I-3
9.3 Installation of an overload relay..........................................................................................................................I-4
9.4 Optional external devices...................................................................................................................................I-5

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iii
10. Table of parameters and data........................................................................................................................................J-1
10.1 Frequency setting parameter.............................................................................................................................J-1
10.2 Basic parameters...............................................................................................................................................J-1
10.3 Extended parameters ........................................................................................................................................J-4
10.4 Default settings by inverter rating......................................................................................................................J-16
10.5 Input Terminal Function .....................................................................................................................................J-17
10.6 Output Terminal Function...................................................................................................................................J-20
11. Specifications.................................................................................................................................................................K-1
11.1 Models and their standard specifications...........................................................................................................K-1
11.2 Outside dimensions and mass...........................................................................................................................K-4
12. Before Contacting your Toshiba distributor - Trip information and remedies..................................................................L-1
12.1 Trip causes/warnings and remedies..................................................................................................................L-1
12.2 Restoring the inverter from a trip .......................................................................................................................L-6
12.3 If the motor does not run while no trip message is displayed ............................................................................L-7
12.4 How to determine the causes of other problems................................................................................................L-8
13. Inspection and maintenance..........................................................................................................................................M-1
13.1 Regular inspection.............................................................................................................................................M-1
13.2 Periodical inspection..........................................................................................................................................M-2
13.3 Contacting with your Toshiba distributor............................................................................................................M-5
13.4 Keeping the inverter in storage..........................................................................................................................M-6
14. Warranty........................................................................................................................................................................N-1
15. Disposal of the inverter..................................................................................................................................................O-1
16. Appendix........................................................................................................................................................................P-1
How to cope with the CE directive..............................................................................................................................P-1

E6582233
A-1
1
1. Read first
1.1 Check product purchase
Before using the product you have purchased, check to make sure that it is exactly what you ordered.
Caution
Mandatory
action
Use an inverter that conforms to the specifications of power supply and three-phase induction
motor being used. If the inverter being used does not conform to those specifications, not only will
the three-phase induction motor not rotate correctly, it may also cause serious accidents through
overheating and fire.
VF-nC3C(Plus)
3PH-380/460V-0.4kW
Related output
current
Power supply
Related input
current
Inverter Type
Inverter rated
output capacity
Danger label
Brand name
Model
Power supply
Motor capacity
Inverter main unit
Carton box
Name plate Danger label
Instruction manual
E6582082
T
yp
e indication label
Rating label
Name plate

E6582233
A-2
1
1.2 Contents of the product
Explanation of the name plate label.
Warning: Always shut power off first then check the ratings label of inverter held in a cabinet.
T
y
pe Form
VFN C 3 Ｅ-4007P
Model name
TOSVERT
VF-nC3E series
Applicable motor
capacity
004 : 0.4kW
007 : 0.75kW
01 5 : 1.5kW
022 : 2.2kW
037 : 3.7k W
055 : 5.5k W
075 : 7.5kW
110 : 11kW
Input (AC) voltage
4 : 380V to 460V
Operation panel
P: Provided

E6582233
A-3
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1.3 Names and functions
1.3.1 Outside view
With cover closed
VF-nC3C(Plus)
3PH-380/460V-0.4kW
Charge lamp
Indicates there is a high
voltage still in the inverter.
Do not open the terminal
block cover when this lamp
is lit because it is dangerous.
Cover
this is the body or terminal
block cover.
Always close this cover
before operation to avoid
accidentally touching the
terminal block.
The serial number is recorded
on the back side
Door lock hole
You can lock the door by
shutting it an passing a wire
key through this hole.
Note 1) Remove the seal as shown on the next page when installing the inverter side by side with other inverters
where the ambient temperature will rise above 50°C.
Note 2) Some models are wrapped in plastic.
Hole for control wire
Optional connector (RJ45)
Hole for main
circuit wiring
Upper caution plate (sticker) Note 1)
Name plate
Ventilation
Cooling fin Note 2)
[Front view]
[Bottom view] [Side view]

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Example of the label
[Opening the cover]
l14 l d
About the monitor display
The LED on the operation panel uses the following symbols to indicate parameters and operations.
LED display (numbers)
0 1 2 3456789-
0123456789-
LED display (letters)
Aa Bb C c Dd Ee Ff Gg H h I i Jj Kk Ll
abcwdefghki}j l
Mm Nn O oPp Qq Rr Ss Tt Uu Vv Ww Xx Yy Zz
mnoxpqrstuv y

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Warning
Prohibited
Never touch the internal terminals in the upper right while the front cover is open.
There is a risk of shock because it carries a high voltage.
[With cover open]
Hz lamp
STOP key
MODE key
EASY key
High voltage
caution mark
MON lamp
RUN key
Setting dial
PRG lamp
RUN lamp % lamp
When lit, the inverter is
in parameter setting
mode. When blinking,
the inverter is in AUH or
Gr-U.
Lit when a frequency is
not output with the ON
run command. This lamp
blinks when operation
starts.
Dispalyed numbers are
percents.
Displayed numbers are
in Hertz.
The internal terminal in
the upper right carries a
high voltage. Never
touch it.
While the runing lamp is
blinking , pressing this
button slows down and
stops the inverter.
Switches between run,
settings, and status
monitor modes.
Switches between easy
and standard setting
modes.
While this is lit, the
inverte r is in monitor
mode.
While blinking , the
inverter is in "Past Trip
History Details Monitor
Display".
Pressing this key while
the run lamp is on starts
operation.
Turning the dial left and
right changes the
operation frequency,
cycles parameters, and
cycles among menus
within parameters.

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1.3.2 Opening the terminal cover
Caution
Mandatory
action
When removing and installing the terminal cover with a screwdriver, be sure not to scratch your hand
as this results in injury.
Pressing too hard on the screwdriver may scratch the inverter.
Always cut the power supply when removing the wiring cover.
After wiring is complete, be sure to replace the terminal cover.
Use the following procedure to remove the power terminal block covers.
(1) Removing the power terminal cover (VFNC3E-4004P, 4007P)
Use the small sized flat-blade screwdriver for control circuit terminal
★After wiring is complete, be sure to restore the terminal cover to its original position.
1) 2)
3) 4)
Insert a screwdriver or other thin object into the
hole indicated with the mark.
Press in on the screwdriver.
While pressing on the screwdriver, rotate the
screwdriver to right and rotate the terminal
cover downward to remove it.
Pull the terminal cover up at an angle.

E6582233
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(2) Removing the power terminal cover (VFNC3E-4015P to 4055P)
★After wiring is complete, be sure to restore the terminal cover to its original position.
1) 2)
3) 4)
Insert a screwdriver or other thin object into the
hole indicated with the mark.
Press in on the screwdriver.
While pressing on the screwdriver, rotate the
terminal cover downward to remove it.
Pull the terminal cover up at an angle.