Mitsubishi Electric FR-A760 Series User Manual

HEAD OFFICE:TOKYO BUILDING 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
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FR-A700
INSTRUCTION MANUAL
INVERTER
PRECAUTIONS FOR USE
OF THE INVERTER
PARAMETERS
PROTECTIVE FUNCTIONS
PRECAUTIONS FOR
MAINTENANCE AND INSPECTION
SPECIFICATIONS
OUTLINE
WIRING
FR-A760-00017 to 06630-NA
IB(NA)-0600313ENG-E (0907)MEE Printed in Japan Specifications subject to change without notice.
FR-A760-NA INVERTER INSTRUCTION MANUAL
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Mitsubishi Electric FR-A760 Series Specifications

General

Series	FR-A760
Category	Inverter
Frequency Range	0.2 to 400 Hz
Power Range	0.4-630 kW
Control Method	V/f control, vector control
Communication Options	RS-485, Ethernet, DeviceNet, Profibus
Protection Features	Overcurrent, overvoltage, undervoltage, overload, short circuit
Overload Capacity	150% for 60 seconds
Braking Unit	Built-in or external (optional)
Ambient Temperature	-10°C to +50°C
Enclosure	IP20
Storage Temperature	-20°C to +65°C
Humidity	5 to 95% (non-condensing)
Altitude	Up to 1000m
Vibration Resistance	5.9 m/s²
Cooling Method	Forced air cooling
Dimensions	Varies by model
Weight	Varies by model

Summary

OUTLINE

Product checking and parts identification

Procedures for unpacking and verifying the inverter and its components to ensure they match the order and are intact.

Inverter and peripheral devices

Overview of the inverter and necessary peripheral devices for proper operation and safety.

Method of removal and reinstallation of the front cover

Step-by-step instructions for safely removing and reinstalling the inverter's front cover and operation panel.

Installation of the inverter and enclosure design

Guidelines for designing enclosures and selecting installation environments to ensure inverter reliability and longevity.

WIRING

Wiring

Essential information and diagrams for correctly connecting power, control, and motor circuits to the inverter.

Main circuit terminal specifications

Specifications and descriptions for each main circuit terminal, including power input, output, and brake resistor connections.

Control circuit specifications

Details on control circuit terminals, including input signals, output signals, and communication interfaces.

Connection of motor with encoder (vector control)

Details on connecting a motor with an encoder for vector control operation, including terminal layouts and wiring examples.

Connection of stand-alone option units

Information on connecting optional units like brake resistors and brake units to the inverter.

PRECAUTIONS FOR USE OF THE INVERTER

Noise and leakage currents

Information on how capacitances cause leakage currents and how to mitigate them, including selection of earth leakage breakers.

Installation of a reactor

Guidelines for installing optional AC reactors to prevent excessive peak current flow and protect the converter circuit.

Power-off and magnetic contactor (MC)

Recommendations for using magnetic contactors on the inverter's input side for safety and maintenance purposes.

Inverter-driven 600V class motor

Precautions regarding surge voltage generated at motor terminals, especially for 600V class motors, and recommended measures.

Precautions for use of the inverter

General safety instructions and handling methods to prevent product damage, shorten service life, or ensure correct operation.

Failsafe of the system which uses the inverter

Methods for implementing failsafe systems using inverter status output signals to prevent accidents and ensure safety.

PARAMETERS

Operation panel (FR-DU07)

Detailed explanation of the parts and functions of the FR-DU07 operation panel for setting and monitoring.

Parameter List

A comprehensive list of all inverter parameters, including their function, setting range, initial value, and page reference.

Control mode

Explanation of the different control modes available, including V/F, advanced magnetic flux vector, real sensorless vector, and vector control.

Speed control by real sensorless vector control, vector control

Detailed guide on setting up speed control using real sensorless vector control and vector control.

Torque control by real sensorless vector control, vector control

Detailed guide on setting up torque control using real sensorless vector control and vector control.

Position control by vector control

Detailed guide on setting up position control using vector control.

Adjustment of real sensorless vector control, vector control

Procedures for adjusting speed detection filters, torque detection filters, and excitation ratio for optimal performance.

Adjust the output torque (current) of the motor

Methods for adjusting output torque, including manual torque boost, automatic control, slip compensation, and stall prevention.

Limit the output frequency

Methods to set upper and lower limits of output frequency and avoid mechanical resonance points.

Set V/F pattern

How to set the V/F pattern by defining base frequency, voltage, and adjustable points.

Frequency setting by external terminals

Methods for setting frequency using external terminals, including multi-speed and remote settings.

Setting of acceleration/deceleration time and acceleration/deceleration pattern

How to set acceleration and deceleration times and patterns for smooth motor control.

Selection and protection of a motor

Guidelines for selecting appropriate motors and configuring protective functions.

Motor brake and stop operation

Methods for controlling motor braking and stopping, including DC injection brake, zero speed control, and servo lock.

Function assignment of external terminal and control

How to assign functions to external input and output terminals for flexible control.

Monitor display and monitor output signal

How to display and monitor inverter status, parameters, and output signals.

Operation selection at power failure and instantaneous power failure

Settings for automatic restart and deceleration-to-stop functions during power failures.

Operation setting at alarm occurrence

How to configure the inverter's behavior when alarms or faults occur.

Energy saving operation and energy saving monitor

Utilizing inverter functions to save energy and monitor energy consumption.

Motor noise, noise reduction

Methods to reduce motor noise by adjusting PWM carrier frequency and Soft-PWM control.

Frequency/torque setting by analog input (terminal 1, 2, 4)

Configuring frequency and torque settings using analog inputs from terminals 1, 2, and 4.

Misoperation prevention and parameter setting restriction

Functions to prevent accidental parameter changes or misoperations.

Selection of operation mode and operation location

Selecting the inverter's operation mode (PU, external, network) and control source.

Communication operation and setting

Configuring communication settings for PU connector, RS-485 terminals, and USB connections.

Special operation and frequency control

Advanced functions for process control, load torque adjustment, and special operations.

Useful functions

Various useful functions for optimizing inverter operation and maintenance.

Setting of the parameter unit and operation panel

Configuring the display language, frequency setting, key lock, buzzer, and contrast for the operation panel and parameter unit.

Parameter clear

Resetting parameters to their initial values, with options for partial or full clearing.

All parameter clear

Procedure to initialize all parameters to their factory default settings.

Parameter copy and parameter verification

Functions for copying parameter settings between inverters or verifying parameter consistency.

Check and clear of the faults history

How to check and clear the inverter's fault history for troubleshooting.

PROTECTIVE FUNCTIONS

Reset method of protective function

Procedures for resetting protective functions and clearing alarms after a fault occurs.

List of fault or alarm display

A comprehensive list of inverter fault and alarm codes, their descriptions, and corresponding page references.

Causes and corrective actions

Troubleshooting guide detailing common causes for alarms and faults, along with corrective actions.

Correspondences between digital and actual characters

Table showing the mapping between digital display characters and their corresponding actual alphanumeric representations on the operation panel.

Check first when you have troubles

Initial troubleshooting steps for common problems like motor not starting, abnormal noise, or speed variations.

PRECAUTIONS FOR MAINTENANCE AND INSPECTION

Inspection item

General guidelines for daily and periodic inspections to prevent inverter faults and ensure reliability.

Measurement of main circuit voltages, currents and powers

How to measure main circuit voltages, currents, and powers using appropriate instruments.

SPECIFICATIONS

Rating

Technical specifications including applicable motor capacity, rated capacity, and current ratings for different models.

Common specifications

General specifications applicable to the inverter series, covering control methods, frequency settings, and functions.

Outline dimension drawings

Dimensional drawings of the inverter and related accessories like DC reactors for installation planning.