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Industrial Inverter
For 3-phase induction motors
Instruction Manual
TOSVERT
toshiba vf-nc3 user manual pdf
<Detailed manual>
1-phase 120V class 0.1
1-phase 240V class 0.1
3-phase 240V class 0.1
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.
nC3
VF-
TM
0.75kW
2.2kW
4kW
NOTICE
E6581595
I
Safety
precautions
II II
Introduction
Contents
1
Read first
2
Connection
3
Operations
4
Setting
parameters
5
Main
parameters
6
Other
parameters
7
Operation
with external
signal
8
Monitoring the
operation status
9
Measures
to satisfy the
standards
10 10
Peripheral
devices
11 11
Table of
parameters
and data
12 12
Specifications
13 13
Before making
a service call
14 14
Inspection and
maintenance
15 15
Warranty
16 16
Disposal of the
inverter
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Table of Contents
Related Manuals for Toshiba VFNC3S-2015PL
Summarization of Contents
I. Safety precautions
Explanation of markings
Explains the meaning of warning and caution markings used in the manual.
Meanings of symbols
Explains the meaning of various symbols used for warnings and instructions.
Limits in purpose
Describes the intended use of the inverter for general industrial applications.
Safety precautions
Provides critical safety warnings regarding device usage and potential hazards.
I. Wiring
Warning
Warnings about incorrect wiring, touching live terminals, and proper connection procedures.
Be Grounded
Emphasizes the importance of secure grounding to prevent electric shock and fire.
I. When retry function is selected (inverter)
Caution
Caution regarding sudden motor restarts when the retry function is active.
I. Attach caution labels
Warning Labels for Restart Prevention
Examples of warning labels to prevent accidents related to sudden restarts.
5. Main parameters
Searching for changes using the history function (RUH)
Function to search for the last five modified parameters and display them.
5. Main parameters
Setting a parameter using the guidance function (RUF)
Guides users through setting parameters based on specific application needs.
5.3 Setting acceleration/deceleration time
Automatic acceleration/deceleration
Automatically adjusts acceleration and deceleration time based on load size.
Manually setting acceleration/deceleration time
Allows manual setting of acceleration and deceleration times for precise control.
5.4 Increasing starting torque
Torque boost setting macro function
Switches inverter output control and programs motor constants to improve torque.
Motor constant must be set
Guidelines for setting motor constants based on the motor's nameplate.
5.5 Selection of operation mode
Command mode selection
Specifies which input device takes priority for operation commands.
Frequency setting mode selection
Specifies which input device takes priority for frequency setting commands.
5.6 Meter setting and adjustment
Meter selection
Selects the output signal type for the FM terminal.
Meter adjustment gain
Adjusts the scale for the meter output signal.
5.7 Forward/reverse run selection (Panel keypad)
Forward/reverse run selection (Panel keypad)
Programs the motor's rotation direction using the panel keypad.
5.8 Maximum frequency
Maximum frequency
Programs the range of frequencies output by the inverter.
5.9 Upper limit and lower limit frequencies
Upper limit frequency
Programs the upper limit of the output frequency.
Lower limit frequency
Programs the lower limit of the output frequency.
5.10 Base frequency
Base frequency 1
Sets the base frequency for load specifications and constant torque control.
Base frequency voltage 1
Sets the base frequency voltage for load specifications and constant torque control.
5.11 Selecting control mode
V/F control mode selection
Allows selection of different V/F control modes like constant, variable torque, etc.
5.12 Manual torque boost - increasing torque boost at low speeds
Torque boost 1
Increases torque by raising the boost rate for inadequate torque at low speeds.
5.13 Setting the electronic thermal
Motor electronic-thermal protection level 1
Sets the motor electronic-thermal protection level.
Electronic thermal protection characteristic selection
Selects appropriate electronic thermal protection characteristics for the motor.
5.14 Preset-speed operation (speeds in 15 steps)
Preset-speed operation frequencies 1-7
Defines frequencies for preset speed steps 1 through 7.
Preset-speed operation frequencies 8-15
Defines frequencies for preset speed steps 8 through 15.
5.15 Standard default setting
Default setting
Resets all parameters to their factory default settings.
5.16 Checking the region setting selection
Checking the region setting
Allows checking the region selected in the setup menu.
5.17 EASY key function
Registered parameters display selection
Selects between standard and easy modes for parameter display.
6. Other parameters
Low-speed signal
Configures the output frequency for the low-speed signal.
6. Other parameters
Output of designated frequency reach signal
Manages signals based on frequency reach and detection bands.
6. Other parameters
Output of set frequency speed reach signal
Sets frequency and detection band for speed reach signals.
Calorific values of the inverter and the required ventilation
Notes
Notes on heat loss for external devices and 100% load operation.
2.1 Cautions on wiring
Warning
Warnings about touching high-voltage parts and proper power-on procedures.
2.2 Standard connections
Warning
Warnings about connecting input power to output terminals and DC terminals.
2.3 Description of terminals
Power circuit terminals
Details on power circuit terminals for supply and motor connections.
2.3.2 Control circuit terminals
Control circuit terminals
Details on control circuit terminals and their functions.
SINK (Negative) logic/SOURCE (Positive) logic (When an external power supply is used)
Selecting the functions of the VI terminal between analog input and logic contact input
Selects VI terminal function between analog and logic input.
3. Operations
Caution
Cautions regarding touching inverter terminals and switches, and motor restart.
3.1 How to Set the Setup Menu
Warning
Warning about incorrect settings causing damage or unexpected movement.
3.2 Simplified Operation of the VF-nC3
Use the basic parameters cMOD and FMOD for selection
Selects command and frequency setting modes using basic parameters.
3.2.1 How to run and stop
(1)Run and stop using the panel keypad (CMOD=1)
Starts and stops the motor using the RUN and STOP keys on the panel.
(2) RUN/STOP by means of an external signal to the terminal board (CMOD=0)
Starts and stops the motor using external signals to the terminal board.
3.2.2 How to set the frequency
(1) Setting using the keypad (FMOD=1 or 2)
Sets the operation frequency using the keypad and saves it.
(2) Setting of frequency using external signals to terminal block (FMOD=0)
1) Setting the frequency using external potentiometer
Sets frequency using an external potentiometer connected to the VI terminal.
2) Setting the frequency using input voltage (0~10V)
Sets frequency using voltage signals from 0 to 10V.
3) Setting the frequency using current input (4~20mA)
Sets frequency using current signals from 4 to 20mA.
4) Setting the frequency using input voltage (0 to 5V)
Sets frequency using voltage signals from 0 to 5V.
3.3 How to operate the VF-nC3
Ex.1 Setting the frequency using the setting dial, and run/stop using the panel keypad (1)
Example of operating the inverter using the setting dial and panel keypad.
Setting the frequency using the setting dial, and run/stop using the panel keypad (2)
Ex.2 Wiring
Wiring diagram for operating the inverter using setting dial and panel keypad.
Setting the frequency using the setting dial, and run/stop using external signals
Ex.3 Wiring
Wiring diagram for operating the inverter using setting dial and external signals.
Setting the frequency using external signals, run/stop using external signals.
Ex.4 Wiring
Wiring diagram for operating the inverter using external signals for both.
3.4 Meter setting and adjustment
Meter selection
Selects the output signal type for the FM terminal.
Meter adjustment gain
Adjusts the scale for the meter output signal.
Adjusting the meter in inverter stop state
Adjustment of output current (FMSL=1)
Adjusts output current when the inverter is stopped.
Other adjustments (FMSL = 0, 2 - 4, 12, 13, 18)
Details adjustments for other meter outputs.
3.5 Setting the electronic thermal
Motor electronic-thermal protection level 1
Sets the motor electronic-thermal protection level.
Electronic thermal protection characteristic selection
Selects appropriate electronic thermal protection characteristics for the motor.
Using a VF motor (motor for use with inverter)
Setting of electronic thermal protection characteristics selection OLM
Sets electronic thermal protection characteristics for VF motors.
Setting of motor electronic thermal protection level 1 EHr
Sets motor electronic thermal protection level for VF motors.
3.6 Preset-speed operation (speeds in 15 steps)
Run/stop
Controls starting and stopping from the terminal board.
Preset-speed frequency setting
Sets the speed (frequency) for the required number of steps.
Terminal functions are as follows.
Terminal S1
Input terminal function selection for preset speed commands.
Terminal S2
Input terminal function selection for preset speed commands.
Terminal R
Input terminal function selection for preset speed commands.
Terminal VI
Analog/contact input selection and function settings.
4. Setting parameters
Standard monitor mode
Mode for monitoring output frequency and setting reference value.
Setting monitor mode
Mode for setting inverter parameters.
4.1 Setting and Display Modes
Easy setting mode
Displays only the seven most frequently used parameters.
Standard setting mode
Displays all basic and extended parameters.
4.2 How to set parameters
Easy setting mode
Mode for changing parameters using the EASY key.
Standard setting mode
How to set basic parameters
Steps for selecting, reading, changing, and saving parameters.
4.3 Functions useful in searching for a parameter or changing a parameter setting
Changed parameters history search (history function) RUH
Searches for and displays the last five modified parameters.
Set parameters by purpose (Guidance function) RUF
Calls up and sets parameters required for a specific purpose.
Search changed parameters GRU
GRU : Automatic edit function
Searches for and displays parameters with non-default values.
4.3.1 Searching for and resetting changed parameters
GRU : Automatic edit function
Searches for and displays parameters with non-default values.
4.3.2 Return to default settings
50 Hz standard setting (TYP=1)
Sets parameters for base frequency 50 Hz use.
60 Hz standard setting (TYP=2)
Sets parameters for base frequency 60 Hz use.
4.4 Checking the region settings selection
SET : Checking the region setting
Allows checking the region selected in the setup menu.
4.5 EASY key function
PSEL : Registered parameters display selection
Selects between standard and easy modes for parameter display.
5. Main parameters
Searching for changes using the history function (RUH)
Automatically searches for the last five modified parameters.
5.2 Setting a parameter using the guidance function (RUF)
Guidance function (RUF)
Guides users through setting parameters for specific applications.
5.3 Setting acceleration/deceleration time
Automatic acceleration/deceleration
Automatically adjusts acceleration/deceleration time based on load.
Manually setting acceleration/deceleration time
Manually sets acceleration and deceleration times.
5.4 Increasing starting torque
Torque boost setting macro function
Switches output control and programs motor constants to improve torque.
Motor constant must be set
Guidelines for setting motor constants based on motor nameplate.
5.5 Selection of operation mode
Command mode selection
Specifies input device priority for operation commands.
Frequency setting mode selection
Specifies input device priority for frequency setting.
5.7 Forward/reverse run selection (Panel keypad)
Forward/reverse run selection (Panel keypad)
Programs motor rotation direction using the panel keypad.
5.8 Maximum frequency
Maximum frequency
Programs the range of frequencies output by the inverter.
5.9 Upper limit and lower limit frequencies
Upper limit frequency
Programs the upper limit of the output frequency.
Lower limit frequency
Programs the lower limit of the output frequency.
5.10 Base frequency
Base frequency 1
Sets the base frequency for load specifications and constant torque control.
Base frequency voltage 1
Sets the base frequency voltage for load specifications and constant torque control.
5.11 Selecting control mode
V/F control mode selection
Allows selection of different V/F control modes.
5.12 Manual torque boost - increasing torque boost at low speeds
Torque boost 1
Increases torque by raising the boost rate for inadequate torque at low speeds.
5.13 Setting the electronic thermal
Motor electronic-thermal protection level 1
Sets the motor electronic-thermal protection level.
Electronic thermal protection characteristic selection
Selects appropriate electronic thermal protection characteristics for the motor.
5.14 Preset-speed operation (speeds in 15 steps)
Preset-speed frequency 1-7
Defines frequencies for preset speed steps 1 through 7.
5.15 Standard default setting
Default setting
Resets all parameters to their factory default settings.
5.16 Checking the region setting selection
Checking the region setting
Allows checking the region selected in the setup menu.
5.17 EASY key function
Registered parameters display selection
Selects between standard and easy modes for parameter display.
6. Other parameters
Input/output parameters
Parameters related to input and output signals.
6.1.1 Low-speed signal
Low-speed signal output frequency
Configures the output frequency for the low-speed signal.
6.1.2 Output of designated frequency reach signal
Speed reach detection band
Sets the frequency band for generating ON/OFF signals.
6.1.3 Output of set frequency speed reach signal
Speed reach setting frequency
Sets the frequency for generating ON/OFF signals based on reach.
Speed reach detection band
Sets the detection band for the speed reach signal.
6.2 Input signal selection
Priority selection (Both F and R are ON)
Selects motor direction when forward and reverse commands are simultaneous.
6.2.1 Priority selection (Both F and R are ON)
Priority selection (Both F and R are ON)
Selects motor direction when forward and reverse commands are simultaneous.
6.2.2 Changing the functions of VI terminal
VI terminal function selection
Chooses between analog and logic input for the VI terminal.
6.3 Terminal function selection
Changing control logic switching
Switches control input/output between sink and source logic.
Keeping an input terminal function always active (ON)
Specifies an input terminal function to be kept active.
6.4 Basic parameters 2
Switching motor characteristics via terminal input
Switches motor V/F characteristics and operation of two motors.
6.5 Setting frequency command
Switching frequency command
Changes frequency command based on terminal block input.
6.5.2 Setting frequency command characteristics
Analog/logic input selection (VI terminal)
Selects analog or logic input for VI terminal.
VI point 1 setting
Sets VI input point 1 percentage.
VI point 1 frequency
Sets VI input point 1 frequency.
VI point 2 setting
Sets VI input point 2 percentage.
VI point 2 frequency
Sets VI input point 2 frequency.
Analog input filter
Filters analog input for noise reduction.
6.5.3 Setting of frequency with the input from an external contact
External logic input - UP response time
Sets response time for UP frequency input.
External logic input - UP frequency steps
Sets frequency steps for UP input.
External logic input - DOWN response time
Sets response time for DOWN frequency input.
External logic input - DOWN frequency steps
Sets frequency steps for DOWN input.
Initial value of UP/DOWN frequency
Sets the initial value for UP/DOWN frequency.
Change of the initial value of UP/DOWN frequency
Changes the initial UP/DOWN frequency value.
6.6 Operation frequency
Starting frequency
Sets the frequency at which operation starts.
6.6.1 Starting frequency
Starting frequency setting
Sets the starting frequency for operation.
6.6.2 Run/stop control with frequency setting signals
Operation starting frequency
Controls operation start based on frequency setting signals.
Operation starting frequency hysteresis
Adjusts hysteresis for operation starting frequency.
6.7 DC braking
DC braking starting frequency
Sets the starting frequency for DC braking.
DC braking current
Sets the DC braking current.
DC braking time
Sets the DC braking time.
6.7.1 DC braking
DC braking starting frequency
Sets the starting frequency for DC braking.
DC braking current
Sets the DC braking current.
DC braking time
Sets the DC braking time.
6.8 Auto-stop in case of lower-limit frequency continuous operation
Auto-stop in case of lower-limit frequency continuous operation time
Sets the time for auto-stop when frequency is continuously below the lower limit.
Auto-stop hysterisis in case of lower-limit frequency continuous operation
Sets hysteresis for auto-stop at lower-limit frequency.
6.9 Jump frequency - Avoiding frequency resonance
Jump frequency
Sets the frequency to jump to avoid resonance.
Jump width
Sets the width of the jump frequency.
6.11 PWM carrier frequency
PWM carrier frequency
Sets the PWM carrier frequency to change motor noise tone.
Random mode
Reduces motor electromagnetic noise by changing carrier pattern.
Carrier frequency control mode selection
Selects carrier frequency control mode.
6.12 Trip-less intensification
Auto-restart (Restart of coasting motor)
Restarts the motor automatically after a momentary power failure.
6.12.1 Auto-restart (Restart of coasting motor)
Auto-restart control selection
Selects auto-restart mode after momentary stop or ST terminal status.
6.12.2 Regenerative power ride-through control/Deceleration stop
Regenerative power ride-through control (Deceleration stop)
Continues motor operation using regenerative energy or performs slowdown stop.
6.12.3 Retry function
Caution
Caution about staying clear of motor in alarm-stop with retry function.
Retry selection (Selecting the number of times)
Resets inverter automatically upon alarm, allowing smooth motor restart.
6.12.4 Avoiding overvoltage tripping
Overvoltage limit operation (Slowdown stop mode selection)
Keeps output frequency constant or increases it to prevent overvoltage tripping.
6.12.5 Output voltage adjustment/Supply voltage correction
Base frequency voltage 1
Sets the base frequency voltage.
Supply voltage correction (output voltage limitation)
Maintains constant V/F ratio or limits output voltage.
6.12.6 Reverse-run prohibition
Reverse-run prohibition
Prevents motor from running in forward or reverse direction on wrong signal.
6.13 PID control
PID control waiting time
Specifies waiting time before PID control starts.
PID control
Enables or disables PID control.
Proportional gain (P)
Adjusts the proportional gain level during PID control.
Integral gain (I)
Adjusts the integral gain level during PID control.
Differential gain (D)
Adjusts the differential gain level during PID control.
PID forward/reverse characteristics selection
Selects PID control characteristics (forward or reverse).
4) Adjusting the PID control gain level
F362 (P-gain adjustment parameter)
Adjusts proportional gain for PID control.
F363 (I-gain adjustment parameter)
Adjusts integral gain for PID control.
6.14 Setting motor constants
To use vector control, automatic torque boost and automatic energy saving, motor constant setting (motor tuning) is required.
Methods for setting motor constants: macro function, independent setting, manual tuning.
[Selection 2: Setting vector control and auto-tuning independently]
Set the auto-tuning parameter F400 to 2 (Auto-tuning enabled)
Enables auto-tuning by setting parameter F400.
6.15 2nd acceleration/deceleration
Switching acceleration/deceleration time 1 and 2
Sets acceleration/deceleration times individually.
6.15.2 Acceleration/deceleration pattern setting
Linear acceleration/deceleration
Uses normal acceleration/deceleration pattern.
S-shape acceleration/deceleration 1
Used for high-speed acceleration/deceleration and moderate shock.
6.16 Protection functions
Setting motor electronic thermal protection
Sets motor electronic thermal protection levels and time.
Setting of stall prevention level
Adjusts output frequency by activating stall prevention.
6.16.1 Setting motor electronic thermal protection
Motor electronic thermal protection level 1
Sets motor electronic thermal protection level 1.
Motor electronic thermal protection level 2
Sets motor electronic thermal protection level 2.
Motor 150%-overload detection time
Sets time for 150% overload detection.
Electronic thermal memory
Stores electronic thermal memory for motor and inverter protection.
6.16.2 Setting of stall prevention level
Stall prevention level 1
Sets stall prevention level 1.
Stall prevention level 2
Sets stall prevention level 2.
6.16.3 Inverter trip retention
Inverter trip retention selection
Retains trip information even after power reset.
6.16.4 Emergency stop
Emergency stop selection
Sets the method for emergency stop (coast, slowdown, DC braking).
6.16.5 Output phase failure detection
Output phase failure detection selection
Detects inverter output phase failure.
6.16.6 Input phase failure detection
Input phase failure detection selection
Detects inverter input phase failure.
6.16.7 Control mode for small current
Small current detection hysteresis
Sets hysteresis for small current detection.
Small current trip/alarm selection
Selects trip or alarm for small current detection.
Small current detection current
Sets the current level for small current detection.
Small current detection time
Sets the time for small current detection.
6.16.8 Detection of output short-circuit
Detection of output short-circuit at start-up
Detects inverter output short-circuit at start-up.
6.16.9 Over-torque trip
Over-torque trip/alarm selection
Selects alarm or trip for over-torque.
Over-torque detection level
Sets the detection level for over-torque.
Over-torque detection time
Sets the detection time for over-torque.
Over-torque detection hysteresis
Sets hysteresis for over-torque detection.
6.16.10 Cooling fan control selection
Cooling fan ON/OFF control
Controls cooling fan operation based on ambient temperature.
6.16.11 Cumulative operation time alarm setting
Cumulative operation time alarm setting
Sets alarm signal after cumulative operation time.
6.16.12 Undervoltage trip
Undervoltage trip/alarm selection
Selects control mode for undervoltage detection.
6.16.13 VI analog input break detection
VI analog input break detection level
Sets level for detecting breaks in VI analog input.
6.16.14 Parts replacement alarms
Annual average ambient temperature (parts replacement alarms)
Sets ambient temperature for calculating parts replacement alarms.
6.17 Adjustment parameters
Pulse train output for meters
Sets pulse output mode and number of pulses for OUT-NO terminals.
6.17.1 Pulse train output for meters
Logic output/pulse train output selection (OUT-NO)
Selects logic output or pulse train output.
Pulse train output function selection (OUT-NO)
Selects function for pulse train output.
Maximum numbers of pulse train
Specifies the maximum number of pulses for pulse train output.
6.17.2 Calibration of analog output
Analog output signal selection
Switches output signal type (mA or V) for FM terminal.
Inclination characteristic of analog output
Adjusts the slope of the analog output signal.
Analog output bias
Adjusts the bias of the analog output signal.
6.18 Operation panel parameter
Prohibition of key operations and parameter settings
Prohibits or allows operation of panel keys and parameter changes.
6.18.1 Prohibition of key operations and parameter settings
Parameter write protection selection
Selects protection level for parameter writing.
Panel frequency setting prohibition (FC)
Prohibits panel frequency setting.
Local / remote operation prohibition for remote keypad
Prohibits local/remote operation for the remote keypad.
Panel operation prohibition (RUN/STOP keys)
Prohibits panel operation of RUN/STOP keys.
Prohibition of panel emergency stop operation
Prohibits panel emergency stop operation.
Prohibition of panel reset operation
Prohibits panel reset operation.
CMOD/FMOD change prohibition during operation
Prohibits changing CMOD/FMOD during operation.
Password setting (F700)
Sets a password to lock parameters.
Password examination
Examines the set password.
6.18.2 Changing the unit (A/V) from a percentage of current and voltage
Current/voltage unit selection
Changes the unit of monitor display between % and A/V.
6.18.3 Displaying the motor or the line speed
Free unit display scale
Converts frequency or other items to motor or load speed.
6.18.4 Changing the steps in which the value increment
Free step (1-step rotation of setting dial)
Changes the step width for panel frequency setting.
6.18.5 Changing the initial display of the panel
Initial panel display selection
Specifies the display format when power is on.
Initial remote keypad display selection
Specifies the display format for the remote keypad.
6.19 Communication function (RS485)
Baud rate
Sets the communication baud rate.
Parity
Sets the communication parity.
Inverter number
Sets the inverter number for communication.
Communication time-out time
Sets the time-out duration for communication.
Communication time-out action
Sets the action to take on communication time-out.
Communication time-out detection condition
Sets conditions for detecting communication time-out.
Selection of communication protocol
Selects the communication protocol (Toshiba or Modbus).
Communication function parameters (2-wire RS485 communication)
Baud rate
Sets the communication baud rate.
Parity
Sets the communication parity.
Inverter number
Sets the inverter number for communication.
Communication time-out time
Sets the time-out duration for communication.
Communication time-out action
Sets the action to take on communication time-out.
Communication time-out detection condition
Sets conditions for detecting communication time-out.
Selection of communication protocol
Selects the communication protocol (Toshiba or Modbus).
Block write data 1
Sets block write data 1.
Block write data 2
Sets block write data 2.
6.20 Free memo
Free memo
Allows entering an identification number for management.
7. Operations with external signal
Check external signal conditions
Procedure to check external signal conditions before setting parameters.
With run/stop from the Panel keypad
Controls run/stop using the panel keypad.
With run/stop from external signal
Controls run/stop using external signals from the terminal block.
With frequency command from panel keypad
Sets frequency using the panel keypad.
With frequency command from external signal
Sets frequency using external signals.
7.1 Operating external signals
Determine your method of operation (the operational signal input method, speed command input method)
Determine operation method before setting parameters.
7.2 Applied operations by an I/O signal (operation from the terminal block)
Input terminal sink and source logic are set according to the selection on the setup menu.
Sets input terminal logic based on setup menu selection.
Settings for the contact input terminal function
Assigns functions to contact input terminals.
7.2.1 Input terminal function
Table of input terminal functions 1
Lists functions assignable to input terminals F, R, S1, S2, VI.
Usage example 2 ··· Jog run
Assign the jog run function to any input terminal.
Assigns jog run function to an input terminal.
7.2.2 Output terminal function (sink logic)
Assign one type of function to an output terminal
Assigns one function type to an output terminal.
Assign two types of functions to the output terminal (OUT-NO)
(1) Output signals when two types of functions are simultaneously turned ON.
Output signals when two functions are simultaneously ON.
(2) Output signals when either one of two types of functions are simultaneously turned ON.
Output signals when one of two functions is ON.
7.3 Speed instruction (analog signal) settings from external devices
Analog input terminal (VI) function settings
Sets functions for the analog input terminal VI.
7.3.1 Settings depending on voltage (0 to 10 V) input
Run and stop settings
Switch between forward/reverse run and run/stop with external signals.
Setting characteristics for the frequency setting signal and operation frequency
Set characteristics for frequency setting signal and operation frequency.
Connecting and calibrating the frequency meter
Connect and calibrate the frequency meter.
7.3.2 Settings depending on current (4 to 20 mA) input
Run and stop settings
Switch between forward/reverse run and run/stop with external signals.
Setting characteristics for the frequency setting signal and operation frequency
Set characteristics for frequency setting signal and operation frequency.
Connecting and calibrating the frequency meter
Connect and calibrate the frequency meter.
7.3.3 Settings depending on voltage (0 to 5 V) input
Run and stop settings
Switch between forward/reverse run and run/stop with external signals.
Setting characteristics for the frequency setting signal and operation frequency
Set characteristics for frequency setting signal and operation frequency.
Connecting and calibrating the frequency meter
Connect and calibrate the frequency meter.
8. Monitoring the operation status
Flow of status monitor mode
Diagram showing the flow between monitor modes.
8.1 Flow of status monitor mode
Standard monitor mode
Mode displayed when inverter power is on.
Setting monitor mode
Mode for setting inverter parameters.
Status monitor mode
Mode for monitoring all inverter status.
8.2 Status monitor mode
Status monitor under normal conditions
Monitors operation status during normal operation.
8.2.1 Status monitor under normal conditions
Operation frequency
Displays operation frequency.
Parameter setting mode
Displays the first basic parameter (History).
Direction of rotation
Displays the direction of motor rotation.
Operation frequency command
Displays the operation frequency command value.
Load current
Displays inverter output current.
Input voltage
Displays inverter input voltage.
Output voltage
Displays inverter output voltage.
Inverter load factor
Displays the inverter load factor.
Operation frequency
Displays the operation frequency.
8.2.2 Display of detailed information on a past trip
Past trip 1
Displays detailed information for past trip 1.
8.3 Display of trip information
Trip code display
Displays error codes to suggest trip causes.
Display of trip information at the occurrence of a trip
Displays trip information during a trip.
8.3.2 Display of trip information at the occurrence of a trip
Cause of trip
Displays the cause of the trip.
Parameter setting mode
Displays the history function (RUH).
Direction of rotation
Displays the direction of rotation during a trip.
Operation frequency command
Displays the operation frequency command at trip.
Load current
Displays the output power at trip.
Input voltage
Displays the input voltage at trip.
Output voltage
Displays the output voltage at trip.
Inverter load factor
Displays the inverter load factor at trip.
Operation frequency
Displays the output frequency at trip.
9. Measures to satisfy the standards
How to cope with the CE directive
Explains how to install inverters to meet CE directive requirements.
9.1 How to cope with the CE directive
About the EMC directive
Details about the EMC directive and its categories.
9.1.2 Measures to satisfy the EMC directive
Table 2 Inverters and EMI filters
Lists inverters and EMI filters for single-phase 240V class.
9.1.4 Measures to satisfy the low-voltage directive
Install the inverter in a cabinet and ground the inverter enclosure
Measures for satisfying the low-voltage directive.
Connect earth wiring to the EMC plate
Connect earth wiring to the EMC plate for low-voltage directive compliance.
Install a non-fuse circuit breaker or a fuse on the input side
Install circuit breaker or fuse on the input side for safety.
9.2 Compliance with UL Standard and CSA Standard
Compliance with Installation
UL certificate assumes inverter is installed in a cabinet.
Compliance with Connection
Use UL conformed cables and ensure branch circuit protection.
Compliance with Peripheral devices
Use UL listed fuses and check short-circuit test conditions.
10. Peripheral devices
Warning
Warning about exceeding socket capacity and potential fire.
Instruction
Instruction regarding proper installation of switchgear in a cabinet.
Prohibited
Prohibition regarding secure earth cable connection.
10.1 Selection of wiring materials and devices
Wire size (See Note 4)
Specifies wire sizes for power circuit, DC reactor, and earth cable.
10.2 Installation of a magnetic contactor
Magnetic contactor in the primary circuit
Details on installing a magnetic contactor in the primary circuit.
Magnetic contactor in the secondary circuit
Details on installing a magnetic contactor in the secondary circuit.
10.3 Installation of an overload relay
The VF-nC3 inverter has an electronic-thermal overload protective function.
Inverter has built-in overload protection; external relay may be needed.
11. Table of parameters and data
User parameters
Lists user-configurable parameters.
Basic parameters
Lists basic parameters for navigation and operation.
11.1 User parameters
Four navigation functions
Details on History, Guidance, Auto-accel/decel, and Torque boost functions.
Basic parameters
Lists basic parameters like command mode and frequency setting.
11.2 Basic parameters
Meter selection
Selects the output signal for the FM terminal.
Meter adjustment gain
Adjusts the meter scale.
Forward/reverse run selection (Panel keypad)
Programs motor rotation direction using the panel.
Acceleration time 1
Sets acceleration time 1.
Deceleration time 1
Sets deceleration time 1.
Maximum frequency
Sets the maximum output frequency.
Upper limit frequency
Sets the upper limit for output frequency.
Lower limit frequency
Sets the lower limit for output frequency.
Base frequency 1
Sets the base frequency 1.
Base frequency voltage 1
Sets the base frequency voltage 1.
V/F control mode selection
Selects the V/F control mode.
Torque boost value 1
Sets the torque boost value 1.
Motor electronic thermal protection level 1
Sets motor electronic thermal protection level 1.
11.3 Extended parameters
Input/output parameters 1
Parameters for input/output signals.
11.5 Default settings by setup menu
Max. frequency
Default max frequency settings by region.
Frequency
Default frequency settings by region.
Base frequency voltage
Default base frequency voltage settings by region.
Sink/source switching
Default sink/source switching settings by region.
Supply voltage correction (output voltage limitation)
Default supply voltage correction settings by region.
Motor rated speed
Default motor rated speed settings by region.
11.6 Input Terminal Function
Table of input terminal functions 1
Lists functions assignable to input terminals.
11.7 Output Terminal Function
Table of output terminal functions 1
Lists functions for output terminals.
12. Specifications
Standard specifications
Details standard specifications for 3-phase and single-phase models.
12.1 Models and their standard specifications
Standard specifications
Details standard specifications for 3-phase and single-phase models.
12.2 Outside dimensions and mass
Outside dimensions and mass
Provides dimensions and weight for various inverter models.
13. Before making a service call - Trip information and remedies
Trip causes/warnings and remedies
Lists trip causes, possible issues, and recommended remedies.
13.1 Trip causes/warnings and remedies
Overcurrent during acceleration
Troubleshooting for overcurrent during acceleration.
Overcurrent during deceleration
Troubleshooting for overcurrent during deceleration.
Overcurrent during constant speed operation
Troubleshooting for overcurrent during constant speed operation.
Overcurrent (An overcurrent on the load side at start-up)
Troubleshooting for overcurrent on the load side at start-up.
Arm overcurrent at start-up
Troubleshooting for arm overcurrent at start-up.
Input phase failure
Troubleshooting for input phase failure.
Output phase failure
Troubleshooting for output phase failure.
13.2 Restoring the inverter from a trip
The inverter can be restored from a trip by any of the following operations:
Methods for restoring the inverter from a trip.
13.3 If the motor does not run while no trip message is displayed ...
Is the 7-segment LED extinguished?
Troubleshooting step: Check if the 7-segment LED is extinguished.
Is O.F.F displayed?
Troubleshooting step: Check if O.F.F is displayed.
Is any failure message displayed?
Troubleshooting step: Check if any failure message is displayed.
Are Retry and a failure message displayed alternately?
Troubleshooting step: Check if Retry and failure messages are alternated.
Is the LED of the RUN/STOP key lighted?
Troubleshooting step: Check if the RUN/STOP key LED is lighted.
Is the LED of the RUN/STOP key off?
Troubleshooting step: Check if the RUN/STOP key LED is off.
0.0 displayed?
Troubleshooting step: Check if 0.0 is displayed.
13.4 How to determine the causes of other problems
The motor runs in the wrong direction.
Troubleshooting for motor running in the wrong direction.
The motor runs but its speed does not change normally.
Troubleshooting for motor speed not changing normally.
The motor does not ac-celerate or decelerate smoothly.
Troubleshooting for inefficient acceleration/deceleration.
A too large current flows into the motor.
Troubleshooting for excessive current flow to the motor.
The motor runs at a higher or lower speed than the specified one.
Troubleshooting for motor speed deviating from specified values.
The motor speed fluctu-ates during operation.
Troubleshooting for motor speed fluctuations during operation.
Parameter settings cannot be changed.
Troubleshooting for inability to change parameter settings.
How to cope with parameter setting-related problems
If you forget parameters which have been reset
How to search for and reset parameters.
If you want to return all reset parameters to their respective default settings
How to return all parameters to their default settings.
14. Inspection and maintenance
Warning
Warning about daily inspection and pre-inspection steps.
14.1 Regular inspection
Inspection procedure
Procedure for regular inspection of the inverter.
14.2 Periodical inspection
Warning
Warning about pre-inspection steps and potential electric shock.
Prohibited
Prohibition against replacing parts due to risk of shock or injury.
Replacement of expendable parts
Cooling fan
Information on cooling fan service life and replacement.
Smoothing capacitor
Information on smoothing capacitor performance and replacement.
16. Disposal of the inverter
Caution
Caution regarding proper disposal by specialists to avoid hazards.
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