Omron SYSDRIVE MX2 SERIES

Questions and Answers

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Gregory GordonJul 30, 2025
What to do if Omron Inverter STOP/RESET key does not work?
- A
  amanda28Jul 30, 2025
  If the STOP/RESET key isn't working, consider these possibilities: * The STOP/RESET key might be disabled by a setting. Check and correct the STOP Key Selection (b087) setting. * The Overvoltage Suppression Function During Deceleration (b130) could be enabled. Try setting Overvoltage Suppression Function During Deceleration (b130) to "00: Disabled" or adjust the operation level of each function. * Controlled Deceleration on Power Loss (b050) might be enabled. Set Controlled Deceleration on Power Loss (b050) to "00: Disabled" or adjust the operating level of each function.
J
John HatfieldAug 3, 2025
Why Omron SYSDRIVE MX2 Digital Operator keys do not work?
- S
  Stacey CookAug 3, 2025
  If the Digital Operator keys aren't functioning, it's possible that: * "86: DISP (Display fixed)" is allocated to a multi- function input terminal and the terminal is turned ON. Turn OFF the terminal to which the applicable function is allocated.
D
Dale YoungAug 16, 2025
What causes Overcurrent Trip (E03) during Omron SYSDRIVE MX2 operation?
- A
  amy95Aug 16, 2025
  An Overcurrent Trip (E03) during operation can occur due to several reasons: * The acceleration time might be too short. Try extending the Acceleration Time (F002/F202/ A092/A292). * The load may be excessive, so reduce the load. * Overload Limit Selection (b021/b024) might be disabled. Enable Overload Limit Selection (b021/ b024).
R
Rodney Bennett DDSAug 20, 2025
Why Omron SYSDRIVE MX2 power does not turn on?
- M
  Miguel DennisAug 20, 2025
  If the power does not turn on and the main POWER LED indicator isn't lit, check the following: * Ensure the shorting bar between terminals +1 and P/+2 or the DC reactor is connected. If disconnected, connect the shorting bar or DC reactor. * Verify that the input wire is properly connected. If disconnected, check the wiring and reconnect it.
W
wayne30Aug 25, 2025
Why specified parameters are not displayed on Omron Inverter?
- J
  Jason MillerAug 26, 2025
  If specified parameters are not being displayed, it might be because: * Display Selection (b037) is set to a limited display mode like "01: Individual display of functions," or "04: Basic display." To see all parameters, set Display Selection (b037) to "00: Complete display". * "86: DISP (Display fixed)" is allocated to a multi- function input terminal and the terminal is turned ON. Turn OFF the terminal to which the applicable function is allocated.
P
pmitchellNov 6, 2025
What to do if Omron SYSDRIVE MX2 Inverter motor rotation speed does not rise?
- A
  Alexis WoodsNov 6, 2025
  If the motor rotation speed isn't increasing, consider these potential causes: * There may be contact failure with the analog input for frequency reference or Variable Resistor. Check the wiring, and measure the FV-SC terminal voltage or source-FI terminal current to ensure the correct signal is present. * The overload limit or overcurrent suppression function might be activated. Try disabling the function or raising the operation level. * The Maximum Frequency (A004) or Frequency Upper Limit (A061/A261) setting may be too low. Change the setting to a higher value. * The acceleration time could be set too long. Shorten the acceleration time (F002/F202/ A092/A292). * If jogging is enabled via a multi-function input terminal, turn OFF the terminal. * If a multi-step speed settin...
K
kristinadavisNov 10, 2025
What to do if Omron SYSDRIVE MX2 Inverter motor does not turn after RUN command?
- K
  Kimberly WalkerNov 10, 2025
  If your motor isn't turning after a run command, it might be due to several reasons: * The Rotation Direction Limit Selection (b035) may be set to prohibit forward or reverse rotation. Ensure the correct setting for Rotation Direction Limit Selection (b035). * The input terminal wiring for the RUN command or shorting-bar connection position could be incorrect. Correct the wiring, using the Multi-function Input Monitor (d005) to check the ON/OFF status of the input terminal. * The analog input for frequency reference or Variable Resistor wiring may be incorrect. Correct the wiring and measure the FV-SC terminal voltage or source-FI terminal current to check for the correct signal. * A multi-function input terminal with "51: F-TM (Forced terminal block)" allocated might be ON while ...

Summary

Introduction

Intended Readers

Manual for qualified electrical engineers for control equipment design, installation, and field management.

Read and Understand this Manual

Warranty and Limitations of Liability

OMRON's warranty terms and liability limitations for product defects and usage.

Application Considerations

Guidelines on product suitability for specific applications, including prohibitions and risks.

Disclaimers

Notes on product specifications, dimensions, performance data, errors, and omissions.

Safety Precautions

Safety Information Indications and Meanings

Explanation of signal words (WARNING, CAUTION) and alert symbols used in the document.

Precautions for Safe Use

Installation and Storage Precautions

Guidelines for product installation and storage locations, avoiding sunlight, extreme temperatures, humidity, and corrosive environments.

Transporting, Installation, and Wiring Precautions

Precautions for handling, wiring, and connecting the product to avoid damage and ensure proper operation.

Main Circuit Power Supply Check

Confirming the rated input voltage matches the AC power supply voltage for safe operation.

Operation and Adjustment Precautions

Confirming motor and machine specifications before operation and providing a separate holding brake if necessary.

Maintenance and Inspection Precautions

Ensuring safety before maintenance and noting capacitor life depends on ambient temperature.

Precautions for Correct Use

Installation Precautions

Instructions for vertical mounting on a nonflammable wall surface and ensuring proper ventilation.

Restart After Trip Precautions

Precautions regarding abrupt machine starts when using the restart function and confirming RUN signal status.

Operation Stop Command Precautions

Importance of a separate emergency stop switch and confirming safety before checking signals to prevent unexpected motor starts.

Maintenance and Parts Replacement Precautions

Need for periodic inspections and parts replacement based on usage conditions to ensure long-term inverter operation.

Product Disposal Precautions

Compliance with local ordinances and regulations for product disposal.

Revision History

About This Manual

Chapter 1: Overview

1-1 Functions

Describes inverter models, international standards, and features of the high-performance, multi-function compact inverter.

1-2 Appearance and Names of Parts

Illustrates and identifies the external components of the inverter for different models.

Chapter 2: Design

2-1 Installation Guide

Covers safe installation practices, environment, backing plates, terminal block cover removal, and main circuit power supply.

2-2 Wiring Instructions

Provides connection diagrams, terminal details, and wiring methods for main and control circuits.

Chapter 3: Operation

Digital Operator Parts Overview

Details the components of the digital operator, LEDs, display, and keys for inverter control.

Operation Methods

Explains how to issue RUN commands and frequency references using the digital operator or control circuit terminals.

Test Run Procedure

Provides procedures for testing inverter operation with both digital operator and control circuit terminal inputs.

Tripping and Error Handling

Explains inverter tripping scenarios, error codes, and methods for resetting errors.

Chapter 4: Parameter List

Monitor Mode Parameters

Lists and describes various monitor parameters for checking inverter status, including frequency, current, and voltage.

Function Mode Parameters

Details parameters related to inverter functions such as acceleration, deceleration, control methods, and communication settings.

Chapter 5: Functions

Monitor Mode Functions

Explains inverter display functions like output frequency, current, and fault monitors.

Basic Functions

Covers essential operational parameters like RUN command selection, acceleration/deceleration times, and base frequency.

Input;Output Terminals

Details the allocation and operation of multi-function input and output terminals for various control signals.

Analog Signal Functions

Explains analog input and output signals, including voltage/current inputs and adjustment parameters.

Control Method Settings

Covers control methods like V/f characteristics and torque boost, and carrier frequency settings.

Operation Functions

Explains functions like 3-wire input, multi-step speed operation, and PID control.

Digital Operator and Operation Functions

Details functions related to the digital operator, including stop key selection, soft lock, and password protection.

Restart Functions

Explains restart methods after power interruptions, overloads, or trips, including frequency matching and pull-in restarts.

Protections, Warnings, and Output Signals

Details protective functions like electronic thermal, overload limits, overcurrent suppression, and output signals.

Brake Settings

Covers DC injection braking and regenerative braking functions for motor control.

Sensorless Vector Control

Explains sensorless vector control and motor parameter selection for optimal performance.

Simple Position Control Function

Details encoder connections, simple position control modes, and multi-step position switching functions.

Safety Function

Explains the safety function, including wiring, inspection, and compliance with safety standards.

Other Functions

Covers initialization settings, user parameter management, and inverter mode selection.

Chapter 6: Communication Function

Communication Specifications

Lists the communication specifications for Modbus (RTU) and RS-485 ports.

RS-485 Port Specifications and Connection

Details the RS-485 port pin assignments and connection diagrams for communication.

Modbus Communication Parameters

Provides a list of parameters for Modbus communication setup, including speed, parity, and station number.

Modbus Communication Protocol

Explains the Modbus communication protocol, message structure, and error handling.

Parameter Explanations

Details the function and data format for Modbus parameters like coil status and holding registers.

Saving Changes to Holding Register

Explains how to save parameter changes to EEPROM using the Enter command and EEPROM write mode.

Co-Inverter Communication

Describes the Co-inverter communication function for connecting multiple inverters and their settings.

Modbus Communication Data List

Provides comprehensive lists of Modbus coils and holding registers with their parameters and data resolutions.

Chapter 7: Maintenance Operations

Error Display and Remedial Actions

Explains how to interpret error codes, check points, and take remedial actions for inverter faults.

Troubleshooting Guide

Provides solutions for common problems and malfunctions not related to error displays.

Chapter 8: Inspection and Maintenance

Inspection and Maintenance Procedures

Details daily and periodic inspection procedures, cleaning, and product disposal guidelines.

Chapter 9: Specifications

Standard Specification List

Lists standard specifications including applicable motor capacity, voltage, current, and dimensions for various models.

External Dimensions

Provides dimensional drawings and specifications for different inverter models.

Optional Accessories

Details specifications for optional accessories like regenerative braking units, resistors, filters, and reactors.

Appendix

Appendix 1: Derating Table

Provides derating curves for output current based on carrier frequency, ambient temperature, and installation methods.

Appendix 2: Smoothing Capacitor Life Curve

Illustrates the relationship between ambient temperature and smoothing capacitor life.

Appendix 3: Life Alarm Output

Explains the life alarm output based on self-diagnosis for limited life parts like capacitors and cooling fans.

Appendix 4: Compliance Notes

Provides guidelines for EMC installation and notes on UL/cUL standards for inverter compliance.