Contents

This section is specifically about safety matters
CONTENTS
CHAPTER 1 OUTLINE
- 1.1 Pre-Operation Information
  - 1.1.1 Precautions for operation
- 1.2 Basic Configuration
  - 1.2.1 Basic configuration
- 1.3 Structure
  - 1.3.1 Appearance and structure
  - 1.3.2 Removal and reinstallation of the front cover
  - 1.3.3 Removal and reinstallation of the operation panel
CHAPTER 2 INSTALLATION AND WIRING
- 2.1 Installation
  - 2.1.1 Instructions for installation
- 2.2 Wiring
  - 2.2.1 Terminal connection diagram
  - 2.2.2 Wiring of the main circuit
  - 2.2.3 Wiring of the control circuit
  - 2.2.4 Connection to the PU connector
  - 2.2.5 Connection of stand-alone option units
  - 2.2.6 Design information
- 2.3 Other wiring
  - 2.3.1 Power harmonics
  - 2.3.2 Harmonic suppression guidelines
  - 2.3.3 Inverter-generated noises and their reduction techniques
  - 2.3.4 Leakage currents and countermeasures
  - 2.3.5 Inverter-driven 400V class motor
  - 2.3.6 Peripheral devices
  - 2.3.7 Instructions for compliance with U.S. and Canadian Electrical Codes
  - 2.3.8 Instructions for compliance with the European Directives
CHAPTER 3 OPERATION/CONTROL
- 3.1 Pre-Operation Information
  - 3.1.1 Devices and parts to be prepared for operation
  - 3.1.2 Power on
- 3.2 Operation Panel
  - 3.2.1 Names and functions of the operation panel (FR-DU04)
  - 3.2.2 Monitor display changed by pressing the key
  - 3.2.3 Monitoring
  - 3.2.4 Frequency setting
  - 3.2.5 Parameter setting method
  - 3.2.6 Operation mode
  - 3.2.7 Help mode
  - 3.2.8 Copy mode
- 3.3 Operation
  - 3.3.1 Pre-operation checks
  - 3.3.2 External operation mode (Operation using external input signals)
  - 3.3.3 PU operation mode (Operation using the operation panel (FR-DU04))
  - 3.3.4 Combined operation mode (Operation using the external input signals and PU)
CHAPTER 4 PARAMETERS
- 4.1 Parameter Lists
  - 4.1.1 Parameter lists
  - 4.1.2 List of parameters classified by purpose of use
  - 4.1.3 Parameters recommended to be set by the user
- 4.2 Parameter Function Details
  - 4.2.1 Torque boost (Pr. 0, Pr. 46, Pr. 112)
  - 4.2.2 Output frequency range (Pr. 1, Pr. 2, Pr. 18)
  - 4.2.3 Base frequency, base frequency voltage (Pr. 3, Pr. 19, Pr. 47, Pr. 113)
  - 4.2.4 Multi-speed operation (Pr. 4 to Pr. 6, Pr. 24 to Pr. 27, Pr. 232 to Pr. 239)
  - 4.2.5 Acceleration/deceleration time (Pr. 7, Pr. 8, Pr. 20, Pr. 21, Pr. 44, Pr. 45, Pr. 110, Pr. ...
  - 4.2.6 Electronic overcurrent protection (Pr. 9)
  - 4.2.7 DC injection brake (Pr. 10 to Pr. 12)
  - 4.2.8 Starting frequency (Pr. 13)
  - 4.2.9 Load pattern selection (Pr. 14)
  - 4.2.10 Jog operation (Pr. 15, Pr. 16)
  - 4.2.11 MRS input selection (Pr. 17)
  - 4.2.12 Stall prevention (Pr. 22, Pr. 23, Pr. 66, Pr. 148, Pr. 149, Pr. 154)
  - 4.2.13 Multi-speed input compensation (Pr. 28)
  - 4.2.14 Acceleration/deceleration pattern (Pr. 29, Pr. 140 to Pr. 143)
  - 4.2.15 Regenerative brake duty (Pr. 30, Pr. 70)
  - 4.2.16 Frequency jump (Pr. 31 to Pr. 36)
  - 4.2.17 Speed display (Pr. 37, Pr. 144)
  - 4.2.18 Up-to-frequency sensitivity (Pr. 41)
  - 4.2.19 Output frequency detection (Pr. 42, Pr. 43, Pr. 50, Pr. 116)
  - 4.2.20 Second/third stall prevention (Pr. 48, Pr. 49, Pr. 114, Pr. 115)
  - 4.2.21 Monitor display/FM, AM terminal function selection (Pr. 52 to Pr. 54, Pr. 158)
  - 4.2.22 Monitoring reference (Pr. 55, Pr. 56)
  - 4.2.23 Automatic restart after instantaneous power failure (Pr. 57, Pr. 58, Pr. 162, Pr. 165, Pr....
  - 4.2.24 Remote setting function selection (Pr. 59)
  - 4.2.25 Intelligent mode selection (Pr. 60)
  - 4.2.26 Acceleration/deceleration reference current (Pr. 61 to Pr. 64)
  - 4.2.27 Retry function (Pr. 65, Pr. 67 to Pr. 69)
  - 4.2.28 Applied motor (Pr. 71)
  - 4.2.29 PWM carrier frequency (Pr. 72, Pr. 240)
  - 4.2.30 Voltage input (Pr. 73)
  - 4.2.31 Input filter time constant (Pr. 74)
  - 4.2.32 Reset selection/PU disconnection detection/PU stop selection (Pr. 75)
  - 4.2.33 Alarm code output selection (Pr. 76)
  - 4.2.34 Parameter write disable selection (Pr. 77)
  - 4.2.35 Reverse rotation prevention selection (Pr. 78)
  - 4.2.36 Operation mode selection (Pr. 79)
  - 4.2.37 Motor capacity/number of motor poles/speed control gain (Pr. 80, Pr. 81, Pr. 89)
  - 4.2.38 Offline auto tuning function (Pr. 82 to Pr. 84, Pr. 90 to Pr. 94, Pr. 96)
  - 4.2.39 Online auto tuning selection (Pr. 95)
  - 4.2.40 V/F control frequency (voltage) (Pr. 100 to Pr. 109)
  - 4.2.41 Computer link operation (Pr. 117 to Pr. 124, Pr. 342)
  - 4.2.42 PID control (Pr. 128 to Pr. 134)
  - 4.2.43 Commercial power supply-inverter switch-over function (Pr. 135 to Pr. 139)
  - 4.2.44 Output current detection function (Pr. 150, Pr. 151)
  - 4.2.45 Zero current detection (Pr. 152, Pr. 153)
  - 4.2.46 RT signal activated condition selection (Pr. 155)
  - 4.2.47 Stall prevention function and current limit function (Pr. 156)
  - 4.2.48 OL signal output timer (Pr. 157)
  - 4.2.49 User group selection (Pr. 160, Pr. 173 to Pr. 176)
  - 4.2.50 Watt-hour meter clear/actual operation hour meter clear (Pr. 170, Pr. 171)
  - 4.2.51 Input terminal function selection (Pr. 180 to Pr. 186)
  - 4.2.52 Output terminal function selection (Pr. 190 to Pr. 195)
  - 4.2.53 User initial value setting (Pr. 199)
  - 4.2.54 Programmed operation function (Pr. 200 to Pr. 231)
  - 4.2.55 Cooling fan operation selection (Pr. 244)
  - 4.2.56 Stop selection (Pr. 250)
  - 4.2.57 Output phase failure protection selection (Pr. 251)
  - 4.2.58 Override bias/gain (Pr. 252, Pr. 253)
  - 4.2.59 Power failure-time deceleration-to-stop function (Pr. 261 to Pr. 266)
  - 4.2.60 Stop-on-contact, load torque high-speed frequency selection (Pr. 270)
  - 4.2.61 High-speed frequency control (Pr. 271 to Pr. 274)
  - 4.2.62 Stop-on-contact control function (Pr. 275, Pr. 276)
  - 4.2.63 Brake sequence function (Pr. 278 to Pr. 285)
  - 4.2.64 Droop control (Pr. 286, Pr. 287)
  - 4.2.65 Capacitor life alarm (Pr. 503, Pr. 504)
  - 4.2.66 FM / AM terminal calibration (Pr. 900, Pr. 901)
  - 4.2.67 Frequency setting voltage (current) bias and gain (Pr. 902 to Pr. 905)
  - 4.2.68 PU buzzer control (Pr. 990)
CHAPTER 5 PROTECTIVE FUNCTIONS
- 5.1 Errors (Alarms)
  - 5.1.1 Error (alarm) definitions
  - 5.1.2 To know the operating status at the occurrence of an alarm
  - 5.1.3 Correspondences between digital and actual characters
  - 5.1.4 Alarm code output
  - 5.1.5 Resetting the inverter
- 5.2 Troubleshooting
  - 5.2.1 Motor remains stopped
  - 5.2.2 Motor rotates in opposite direction
  - 5.2.3 Speed greatly differs from the setting
  - 5.2.4 Acceleration/deceleration is not smooth
  - 5.2.5 Motor current is large
  - 5.2.6 Speed does not increase
  - 5.2.7 Speed varies during operation
  - 5.2.8 Operation mode is not changed properly
  - 5.2.9 Operation panel (FR-DU04) display is not provided
  - 5.2.10 POWER lamp is not lit
  - 5.2.11 Parameter write cannot be performed
CHAPTER 6 PRECAUTIONS FOR MAINTENANCE AND INSPECTION
- 6.1 Precautions for maintenance and inspection
  - 6.1.1 Precautions for maintenance and inspection
  - 6.1.2 Check items
  - 6.1.3 Periodic inspection
  - 6.1.4 Insulation resistance test using megger
  - 6.1.5 Pressure test
  - 6.1.6 Daily and periodic inspection
  - 6.1.7 Replacement of parts
  - 6.1.8 Inverter replacement
  - 6.1.9 Measurement of main circuit voltages, currents and powers
CHAPTER 7 SPECIFICATIONS
- 7.1 Standard Specifications
  - 7.1.1 Model specification
  - 7.1.2 Common specifications
  - 7.1.3 Outline dimension drawings
CHAPTER 8 OPTIONS
- 8.1 Option List
  - 8.1.1 Stand-alone options
  - 8.1.2 Plug-in dedicated options
APPENDIX
- Appendix1 Data Code List
REVISONS

Mitsubishi FR-A500 FR-A520-55K Instruction Manual

Mitsubishi FR-A500 FR-A520-55K Inverter manual cover

Pages 257

Year 2003

Language(s)

of 257

Mitsubishi FR-A500 FR-A520-55K Inverter Specification

The Mitsubishi FR-A500 FR-A520-55K Inverter is a high-performance variable frequency drive designed for precision control of AC motor speed and torque. This inverter is engineered to enhance energy efficiency and optimize the performance of industrial machinery, making it suitable for a wide range of applications. With a robust design, it supports a power rating of 55 kW, offering reliable performance for heavy-duty operations.

The FR-A520-55K features advanced vector control technology, allowing for precise motor control and improved torque at low speeds. It supports a voltage range suitable for various industrial environments and offers compatibility with different motor types, enhancing its versatility. The inverter's user-friendly interface is equipped with a digital keypad and a clear display, facilitating easy parameter setting and monitoring.

To ensure operational safety and reliability, the inverter includes multiple protective functions such as overcurrent, overvoltage, and overload protection. Its design incorporates a built-in EMC filter to minimize electromagnetic interference, promoting seamless integration with other industrial equipment. The FR-A520-55K also supports multiple communication protocols, enabling easy integration into existing automation systems for enhanced operational efficiency.

The design emphasizes effective heat dissipation and durability, with a compact form factor that allows for flexible installation even in constrained spaces. Mitsubishi's focus on quality and innovation ensures that the FR-A520-55K inverter delivers consistent performance, reduced downtime, and extended motor lifespan, contributing to lower operational costs and improved productivity. This inverter is a testament to Mitsubishi's commitment to providing advanced, reliable solutions for industrial automation and motor control needs.

Mitsubishi FR-A500 FR-A520-55K Inverter F.A.Q.

How do I reset the Mitsubishi FR-A520-55K inverter to its factory settings?

To reset the FR-A520-55K inverter to factory settings, turn off the power supply, wait for the charge lamp to turn off, then hold the 'RESET' button while turning the power back on until the display shows '0000'.

What is the procedure for troubleshooting an overcurrent fault in the FR-A520-55K inverter?

Check for short circuits in the motor and cable connections, ensure the motor is not overloaded, and verify the inverter settings are correct for the motor specifications. If the issue persists, consult the inverter manual for further diagnostics.

How can I adjust the acceleration time on the Mitsubishi FR-A520-55K inverter?

Adjust the acceleration time by setting parameter 7 (Pr.7) to the desired time in seconds. Access the parameter settings through the keypad interface and enter the new value.

What maintenance steps should be regularly performed on the FR-A520-55K inverter?

Regular maintenance includes cleaning the air filters, checking for loose connections, inspecting cooling fans for proper operation, and verifying that all parameters are correctly set.

How do I connect an external potentiometer to control the speed of the FR-A520-55K inverter?

Connect the external potentiometer to terminals 2, 5, and 10. Terminal 2 is for the potentiometer wiper, terminal 5 is for the common, and terminal 10 is for the positive supply voltage. Ensure that the potentiometer value matches the inverter's specifications.

What should I do if the inverter's display shows an 'E.OC1' error code?

The 'E.OC1' error indicates an overcurrent during acceleration. Check for mechanical binding, ensure the motor is not overloaded, and verify that acceleration parameters are set correctly. Adjust as necessary and retry.

Can the FR-A520-55K inverter be used with single-phase motors?

The FR-A520-55K inverter is primarily designed for three-phase motors. Using it with single-phase motors is not recommended as it may result in improper operation or damage.

How do I update the firmware on the FR-A520-55K inverter?

The FR-A520-55K inverter does not support firmware updates. Ensure you have the latest manual and support documents for troubleshooting and parameter settings.

What ambient temperature range is suitable for the operation of the FR-A520-55K inverter?

The suitable ambient temperature range for operating the FR-A520-55K inverter is typically between -10°C to 50°C (14°F to 122°F). Ensure adequate ventilation to prevent overheating.

How can I extend the lifespan of the FR-A520-55K inverter?

To extend the lifespan of the inverter, ensure it is installed in a well-ventilated area, perform regular maintenance, avoid overloading the motor, and keep the inverter clean and free from dust and debris.