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Danfoss DLX 4.4 UL

Danfoss DLX 4.4 UL
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DLX
User Guide
DLX 2.0 UL - DLX 2.9 UL - DLX 3.8 UL - DLX 4.4 UL
MAKING MODERN LIVING POSSIBLE
SOLAR INVERTERS

Table of Contents

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Danfoss DLX 4.4 UL Specifications

General IconGeneral
BrandDanfoss
ModelDLX 4.4 UL
CategoryInverter
LanguageEnglish

Summary

IMPORTANT SAFETY INSTRUCTIONS!

Safety Instructions

Contains important safety instructions for DLX UL inverter series, read before installation and operation.

Qualified Persons

Specifies that installation, operation, and maintenance must be performed by qualified personnel.

Safety Protection Features

Details inverter safety features like galvanic isolation and anti-islanding protection.

Warning Signs Explanation

Explains warning signs (DANGER, WARNING, CAUTION) to avoid hazards to people and equipment.

Electrical Codes Compliance

Electrical installation must comply with local regulations, NEC, ANSI/NFPA 70, and OSHA.

1. INTRODUCTION

DLX UL Series Overview

Highlights the DLX UL series's efficiency, galvanic isolation, adaptability, and user-friendliness.

Integrated Web Server Functionality

Describes the inverter's web server for data logging, monitoring, and remote access.

Automatic System Operation

Explains the inverter's automatic startup, MPPT function, and sleep mode based on solar power.

2. PRODUCT OVERVIEW

2.1. Standards and Approvals

Lists the standards and approvals the DLX UL inverters comply with depending on grid settings.

2.2.3. Key Features

Lists key features like peak efficiency, flexible configuration, monitoring, data logging, and protection.

2.3. Warning Symbols

Explains warning symbols used in the guide to highlight hazards and ensure safety.

3. SAFETY PRECAUTIONS

3.1. General Preparations

Covers general safety preparations, including qualified personnel and regulatory compliance.

3.1.1. Connections Safety

Instructions for contacting the utility company and ensuring safe electrical connections.

3.2. Site Preparations

Precautions for selecting a suitable site with adequate ventilation and temperature for the inverter.

3.3. Required Safety Equipment

Details essential safety equipment like disconnection and overcurrent protection devices.

4. INSTALLATION

4.1. Mechanical Installation

Covers mechanical installation aspects, including suitability of mounting surfaces and methods.

4.2. Checks Prior to Electrical Installation

Checklist of essential steps before proceeding with electrical installation for safety and compatibility.

4.3. Electrical Installation

Guidance on correct electrical connection for safe and reliable system operation.

4.3.3. Grounding Procedures

Explains proper PV system grounding for surge limits, common reference, and protection.

5. START UP

5.1. Initial Start Process

Instructions for the first-time startup, requiring AC, DC voltage, and minimum power.

5.1.1. Customizing Inverter Settings

Guides through customizing initial inverter settings via the installation menu.

5.1.2. User Interface Navigation

Explains how to navigate the LCD screen using function keys and menu levels.

6. OPERATION

6.1.1. Access Levels and Passwords

Details the Guest, Owner, and Installer access levels and their associated passwords.

6.1.4. Setup Menu Structure

Explains how to navigate the Setup menu to access settings for the inverter, grid, and plant.

6.2. Connection between Inverter and PC

Instructions for connecting the inverter to a computer for monitoring and configuration.

6.3. Internal Webserver Access

Provides information on accessing the webserver for operation details, alarms, and energy production.

7. TROUBLESHOOTING

7.1. Check List by Failure

Troubleshooting checklist for when the inverter is not feeding power to the grid.

7.2. Table of Events

Lists messages that appear on the display during inverter failures, with W/A indicators.

8. MAINTENANCE

8.1. Switch-OFF Procedure

Procedure for safely switching OFF and disconnecting the inverter before maintenance.

8.2. Regular System Inspections

Importance of regular maintenance for efficiency and inverter lifespan.

8.2.5. DC Fuses Ground Fuse Replacement

Procedure for replacing DC fuses, including safety warnings and fault checks.

8.3. Replace Devices

Instructions for safely removing and replacing inverter components.

9. WARRANTY

9.1. Warranty Service Details

Details the standard 10-year warranty and conditions for maintaining it.

9.2. Warranty Disclaimer Conditions

Outlines conditions that void the warranty, such as misuse or unauthorized repairs.

10. TECHNICAL DATA

10.1. Inverter Datasheet Specifications

Provides detailed technical specifications for the DLX UL inverters, including AC and DC parameters.

10.2. Field Adjustable Trip Levels

Table detailing adjustable voltage and frequency trip limits for grid configurations.

CERTIFICATE OF COMPLIANCE

UL Listing Mark Information

Explains the UL Listing Mark for US and Canada, including its components and meaning.

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