Inovance MD330 User Manual (English)

Andres JordanAug 3, 2025

What to do if Inovance DC Drives show AC drive unit protection?

V
villarrealnancyAug 3, 2025
If your Inovance DC Drive unit shows a protection error, it could be due to several reasons. The output circuit may be grounded or short-circuited, the motor cable might be too long, or the IGBT could be overheating. Internal connections might be loose, the main control board could be faulty, the drive board may have issues, or the AC drive IGBT itself might be defective. To resolve this, first, eliminate any external faults. If the motor cable is too long, consider installing a reactor or an output filter. Ensure that the air filter is clean and the cooling fan is working correctly. Check all cable connections to make sure they are secure.

Inovance MD330 Specifications

General

Model	MD330
Category	DC Drives
Control Mode	Vector control, V/F control
Protection Features	Overcurrent, overvoltage, undervoltage, overload, overtemperature, phase loss, short circuit
Communication Interface	RS485, Modbus
Operating Temperature	-10°C to 50°C
Storage Temperature	-20°C to +65°C
Humidity	5% to 95% (non-condensing)
Altitude	Up to 1000m without derating

Summary

Chapter 1 Safety Information and Precautions

1.1 Safety Information and Precautions

Details safety precautions for installation stages (before, during, wiring, power-on).

1.2 General Precautions

Covers RCD requirements, leakage current, motor insulation, thermal protection, and operational limits.

Chapter 2 Product Information

2.1 Designation Rules and Nameplate of the MD380

Explains model designation, nameplate components, and part identification.

2.2 Components of the MD380

Describes the two housing types of the MD380 series AC drives.

2.3 Technical Specifications

Lists detailed electrical and functional specifications of the MD380 series AC drive.

2.4 Peripheral Electrical Devices and System Configuration

Details necessary peripheral devices and system configuration diagrams for safe operation.

Chapter 3 Mechanical and Electrical Installation

3.1 Mechanical Installation

Covers installation environment, clearance requirements, and mounting methods for the MD380.

3.2 Electrical Installation

Details main circuit terminals, wiring diagrams, control circuit terminals, and wiring precautions.

Chapter 4 Operation, Display and Application Examples

4.1 Operation Panel

Explains the operation panel, indicators, keys, and digital display functions.

4.2 Viewing and Modifying Function Codes

Describes the three-level menu system for navigating and modifying function codes.

4.3 Structure of Function Codes

Explains the organization of function codes into groups (F, A, U) and their compatibility.

4.4 Quick View of Function Codes

Introduces quick viewing modes (base, user-defined, user-modified) for function codes.

4.5 Definition and Operation of the Multifunction Key (MF.K)

Details how to set and use the MF.K key for various functions like JOG or direction switchover.

4.6 Viewing Status Parameters

Explains how to view running and stop status parameters using LED indicators.

4.7 Starting or Stopping the AC Drive

Covers selecting start/stop command sources (panel, terminal, communication) and start modes.

4.8 Setting the Running Frequency

Details setting main and auxiliary frequency sources, including AI, pulse, and PID.

4.9 Setting and Auto-tuning of Motor Parameters

Explains setting motor parameters and performing auto-tuning for optimal performance.

4.10 Use of DI Terminals

Explains the functions and wiring of digital input terminals, including delay settings.

4.11 Use of DO Terminals

Lists the functions and output features of digital output terminals (FM, DO1, relay).

4.12 Use of AI Terminals

Details the input signal characteristics of analog input terminals (AI1, AI2, AI3).

4.13 Use of AO Terminals

Describes analog output terminals (AO1, AO2) for indicating running parameters.

4.14 Use of the PG Terminal

Explains the use of the PG terminal for encoder feedback in closed-loop control.

4.15 Use of Serial Communication

Covers serial communication protocols (Modbus, Profibus-DP, CANopen, CANlink) for host computer interaction.

4.16 Use of Multifunctional Extension Interfaces

Lists and describes various extension cards for enhanced functionality.

4.17 Password Setting

Explains the user password protection function for parameter access.

4.18 Parameter Saving and Default Setting Restoring

Details how to save, back up, and restore AC drive parameters and settings.

Chapter 5 Function Code Table

5.1 Standard Function Parameters

Lists standard function parameters for groups F0, F1, F2, F3, F4, F5, F6, F7, F8, F9.

5.2 Monitoring Parameters

Lists standard monitoring parameters (U0) for viewing AC drive status.

Chapter 6 Description of Function Codes

Group F0: Basic Parameters

Describes basic function codes like G/P type display, motor control mode, command source, and frequency sources.

Group F1: Motor 1 Parameters

Details parameters for Motor 1, including type, ratings, auto-tuning, and encoder settings.

Group F2: Vector Control Parameters

Explains parameters specific to vector control, such as speed loop gains and field weakening.

Group F3: V/F Control Parameters

Details parameters for V/F control, including V/F curve settings, torque boost, and slip compensation.

Group F4: Input Terminals

Explains functions and settings for digital and analog input terminals.

Group F5: Output Terminals

Lists functions and output features for digital and analog output terminals.

Group F6: Start/Stop Control

Covers start modes, stop modes, DC braking, and acceleration/deceleration time settings.

Group F7: Operation Panel and Display

Describes operation panel keys, indicators, LED display settings, and parameter display modes.

Group F8: Auxiliary Functions

Details auxiliary functions like JOG running, jump frequencies, protection settings, and fan control.

Group F9: Fault and Protection

Covers motor overload, overvoltage, overcurrent protection, fault types, and action selections.

Group FA: Process Control PID Function

Explains PID control settings, feedback sources, and parameter switchover.

Group FB: Swing Frequency, Fixed Length and Count

Details swing frequency, fixed length, and counting functions.

Group FC: Multi-Reference and Simple PLC Function

Explains multi-reference and simple PLC functions for frequency setting.

Group FE: User-Defined Function Codes

Describes how to select and group user-defined function codes.

Group FP: User Password

Explains user password protection and default setting restoration.

Group A0: Torque Control and Restricting Parameters

Details torque control settings, torque setting sources, and frequency limits.

Group A1: Virtual DI (VDI)/Virtual DO (VDO)

Explains virtual input/output functions and their state selections.

Group A2: Motor 2 Parameters

Details parameters for Motor 2, including type, ratings, auto-tuning, and control modes.

Group A3: Motor 3 Parameters

Details parameters for Motor 3, including type, ratings, auto-tuning, and control modes.

Group A4: Motor 4 Parameters

Details parameters for Motor 4, including type, ratings, auto-tuning, and control modes.

Group A5: Control Optimization Parameters

Covers parameters for optimizing control, such as PWM modulation and dead zone compensation.

Group A6: AI Curve Setting

Explains how to define AI curve relationships for analog input voltage and setting.

Group A7: User Programmable Function

Details user programmable function selection and control mode settings.

Group A8: Point-point Communication

Explains point-to-point communication setup, master/slave selection, and data transfer.

Group AC: AI/AO Correction

Describes parameters used to correct AI/AO analog output signals for zero offset and gain.

Chapter 7 EMC

7.1 Definition of Terms

Defines EMC, environments, and AC drive categories (C1-C4).

7.2 Introduction to EMC Standard

Introduces EMC standards and category compliance for the MD380 series AC drive.

7.3 Selection of Peripheral EMC Devices

Guides on selecting EMC input filters and installation precautions.

7.4 Shielded Cable

Covers requirements and cabling techniques for shielded cables to ensure EMC compliance.

7.5 Solutions to Common EMC Interference Problems

Provides solutions for common EMC interference issues like leakage protection tripping and communication interference.

Chapter 8 Selection and Dimensions

8.1 Electrical Specifications of the MD380

Lists electrical specifications including power capacity, input/output current, and adaptable motor ratings.

8.2 Physical Appearance and Overall Dimensions of the MD380

Shows physical appearance and provides overall dimensions and mounting hole details for MD380 units.

8.3 Recommended Cable Diameter and Installation Dimensions of Power Terminals

Provides recommendations for power terminal cable diameter, lug models, and torque specifications.

8.4 Selection of Peripheral Electrical Devices

Lists recommended MCCB, contactor, and cable sizes for main and control circuits.

8.5 Selection and Installation of External DC Reactor

Details the installation mode and physical dimensions of external DC reactors.

8.7 Selection of Braking Unit and Braking Resistor

Guides on selecting braking units and resistors based on application and motor parameters.

Chapter 9 Maintenance and Troubleshooting

9.1 Routine Repair and Maintenance of the MD380

Covers routine maintenance checks, cleaning procedures, and periodic inspections.

9.2 Warranty Agreement

Outlines the warranty terms, coverage, and conditions for repair expenses.

9.3 Faults and Solutions

Lists common faults, possible causes, and solutions for troubleshooting the AC drive.

9.4 Common Faults and Solutions

Provides a table for simple fault analysis and troubleshooting of common AC drive issues.

Inovance MD330 User Manual

Table of Contents

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