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Toshiba Tosvert VF-A3 Instruction Manual

High performance inverter

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Instruction manual (131 pages)

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Table Of Contents

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Contents
Table of Contents
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Table of Contents

Introduction
Check Your Equipment
Inverter Model Code
Remarks
Table of Contents
Installation and Operation
Installation
Installation Clearances for the VF-A3
Wiring Connections
How to Open the Front Cover
Terminals for Connecting the VF-A3 to the Power Supply and to a Motor
Schematic Diagram
Standard Connection
Simplified Operation
Operating Panel
Operating Keys
Setting and Monitoring Keys
Operation Procedure
Various Operating Functions
Functions and Adjustments
First and Second Functions
First Functions
Second Functions
Frequency Setting
Status Monitoring
Monitoring During a Run or When Halted
Monitoring During a Run or a Satndstill
Monitoring Trip Status
Monitoring Tripped Status
Monitoring Details of Faults
Standard Setting Mode
Standard Setting Patterns
Setting Voltage/Frequency Characteristics
Maximum Frequency
Setting Maximum Frequency
Torque Boost
Setting to Increase Start-Up Torque
Automatic Torque Boost
Base Frequency
Setting Base Frequency
V/F Patterns
Setting V/F Patterns
Acceleration/Deceleration Time
Acc/Dec Patterns
Deceleration Patterns
Connections for Operating the Inverter by External Signals
External Signal Connections
Terminal Connections
Forward/Reverse Run, Coasting Stop, and Emergency Stop Operations
Operation Via the Inverter's Panel Control
External Signal Operation
Forwsrd and Reverse Runs Switches
Timing Chart for Forward/Reverse Run Operation
Terminal Inputs and Actions
Frequency Setting Signals (Setting with External Signals)
Types of Frequency Setting Signals
Terminals for Setting Output Frequency from an External Device
Operation Via the VF-A3'S Control Panel
Operation the Inverter Via External Signals
Connecting a JOG Switch and Associated Switches
Example of a Jogging Run Using a JOG Switch
Multispeed Runs
Panel Controlled Operation
External Signal Operation
Timing Chart Showing Multispeed Run
Terminal Connections with Switches for Multispeed Controls
Frequency Jump
Frequency Jump Settings
Start-Up Frequency
Start Frequency
Operation Starting Frequency
DC Injection Braking
Timing Chart Showing an Example of a DC Injection Braking Operation
Regenerative Braking
Connection and Setting of Regenerative Braking
Universal Unit Setting and Display
Data Storage Function
Output Voltage Reduction and Output Voltage Regulation
Simplified Patterned Run Operation
Connection of the Patterned Run Switches
Timing Chart Showing a Example of a Simplified Patterned Run Operation
PWM Carrier Frequency Switching
Command Modes
Frequency Setting Mode
Parameter Setting Mode
PI Control
Block Diagram
Example of Pressure Constant Control
Signals and Connections for Automatic Operation
Connections of Signals
Operation Signals
Example of Transistorized Output Connected to the VF-A3 Inverter's Output Terminals
Terminal Selection
Selection of Input Terminals
Input Terminals and Corresponding Operating Frequency
Selection of Output Terminals
Example Inverter-To-Relay Connections for Reach Signal Detection
Example Inverter-To-Programmable Controller Connections for Reach Signal Detection
Upper and Lower Limit Frequency Signal Outputs
Example Operation with Upper and Lower Limit Frequency Signal Outputs
Low-Speed and Speed-Reach Signal Outputs
Example Operation with Low-Speed and Speed-Reach Signals
Meter Connection
Connecting a Frequency Meter
Ammeter Connections
Terminals for Connecting a Frequency Meter to the Inverter
Fault-Detection Signal Terminals
Terminals to Use for Connecting an Ammeter to the Niverter
Reset Signal Terminals
Resetting the Inverter Via the Operating Panel
Resetting with an External Signal
Conections for the Inverter's Reset Switch
VF-A3 Specifications
Specifications
Standard Specifications
External Dimensions
External Dimensions of Nine Models of the VF-A3
Outline Drawing (A)
Outline Drawing (B)
Outline Drawing (C)
Screw Sizes of the Main Circuit and Control Circuit Are as Follows
Protective Functions
Electronic Thermal Function
Stall Prevention Function
Electronic Thermal Function Activation Characteristics
Selection of Electronic Thermal Characteristics
Electronic Thermal Activation Characteristics for Standard Motors
Electronic Thermal Activation Characteristics for VF Motors
Retention of System Status
Restart Try Function
Causes of Faults and Retry Processes
Automatic Restart Function (after Instantaneous Power Interruption)
Power Control Function for Momentary Power Failure
Summary of Settings and Adjustments
Functions of Jumpers JP1 and JP2
Function of Jumper JP3
Leds Used for the Inverter's Monitor Display
Alphanumerics Used for the Monitor Display
Optional Units
Options for External Installation
Optional Units for External Installation
Built-In Options
Built-In Type Options
Writing Precautions
Installation Site and Operating Environment
Main Circuit Connections
Power Supply to the Inverter
Terminal Connections for the Main Circuit Components (200V Class)
Motor to the Inverter to a Ground Terminal
Between the Inverter and the Regenerative Discharge Resistor/Regenerative Discharge Unit
Wiring Specifications
Models and Ratings of the Inverter's Main Circuit Parts
Example Selection of Wires for Inverter Connections
Control Signal Circuit Wiring
Fault Messages
Fault Messages and Their Corrective Measures
Symptoms of Common Motor Problems
Symptoms of Common Motor Problems and Recommended Countermeasures
Inspections and Maintenance
Preventive Maintenance and Periodic Inspection
Recommended Voltmeters
Storing the Inverter and Terms of Warranty
Storing the Inverter

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1 Wiring Connections
2 Terminals for Connecting the Vf-A3 to the Power Supply and to a Motor
3 Fault Messages
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Toshiba Tosvert VF-A3 Instruction Manual

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