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Delta M60U - User Manual

Delta M60U
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M80U
M60U
Operation and Installation Manual
Grid-tie Transformerless Solar Inverter
The power behind competitiveness
www.deltaww.com

Table of Contents

Questions and Answers

  • E
    Elizabeth JonesAug 28, 2025
    What does AC Surge DC Surge error mean on my Delta Inverter?
    • F
      Francisco GreerAug 29, 2025
      If your Delta Inverter displays 'AC Surge DC Surge', possible causes include: 1. The inverter was struck by lightning, so check the inverter’s status. 2. One or more SPD are defective, so replace the defective SPD. 3. One or more SPD are disconnected, so check the connections of SPDs. 4. A detection circuit malfunction, so check the connection in AC terminal. 5. Wrong connection in AC terminal, so contact customer service for technical support.
  • C
    cookloriAug 28, 2025
    What causes Solar2 High (E31) error on my Delta Inverter?
    • J
      john82Aug 28, 2025
      If your Delta Inverter displays 'Solar2 High (E31)', it could be due to: 1. MPPT 2 input voltage being over 1000Vdc, so modify the solar array setting, and ensure the Voc is less than 1000Vdc. 2. A detection circuit malfunction, and you should contact customer service for technical support.
  • M
    meyerangelaAug 28, 2025
    How to troubleshoot Solar1 High (E30) error on Delta Inverter?
    • A
      anthonyrobertsonAug 28, 2025
      If your Delta Inverter shows 'Solar1 High (E30)', it might be caused by: 1. MPPT 1 input voltage being over 1000Vdc, so modify the solar array setting to make the Voc less than 1000Vdc. 2. A detection circuit malfunction, and you should contact customer service for technical support.
  • V
    Vanessa MartinezSep 7, 2025
    What does HW AC OCR (F45) error mean on my Delta M60U?
    • P
      Pam RodriguezSep 7, 2025
      If your Delta Inverter displays 'HW AC OCR (F45)', it could be due to: 1. Large Grid harmonics, so check the utility waveform. Grid connection of inverter needs to be far away from non-linear load if necessary. 2. Switching device is defective, so check all switching devices in inverter stage. 3. A detection circuit malfunction, so contact our customer service for technical support.
  • R
    roger13Sep 12, 2025
    How to fix Insulation (E34) error on Delta Inverter?
    • J
      justin78Sep 12, 2025
      To resolve the Insulation (E34) error on your Delta Inverter, check the insulation of the solar inputs. Also, inspect the capacitance and dry the PV panel if necessary.
  • A
    Ariel HendersonSep 14, 2025
    What does Solar2 Low (W02) mean on my Delta M60U?
    • C
      Christopher RodriguezSep 14, 2025
      If your Delta Inverter displays Solar2 Low (W02), it indicates that the MPPT2 input voltage is under the limit, some devices were damaged inside the inverter if the actual MPPT 2 voltage is close to '0', or there is a detection circuit malfunction. Check the MPPT 2 input voltage to the inverter terminal and all switching devices in boost2.
  • G
    Gary SmithSep 18, 2025
    What does HW DSP ADC2 (F16) error mean on Delta Inverter?
    • A
      Ashley WuSep 18, 2025
      The HW DSP ADC2 (F16) error on your Delta Inverter indicates insufficient input power, an auxiliary power circuitry malfunction, or a detection circuit malfunction. Check the input voltage, ensuring it is >150Vdc. Check the auxiliary circuitry inside the inverter.
  • R
    Rachael FrankAug 26, 2025
    What causes AC Freq Low (E02) on my Delta M60U Inverter and how to resolve it?
    • C
      Carmen PattersonAug 26, 2025
      If your Delta Inverter displays 'AC Freq Low (E02)', the issue might be due to several reasons: 1. The actual utility frequency is under the UFR setting, so check the utility frequency. 2. The Grid code or Grid setting is incorrect, so check them. 3. If the issue persists, there may be a detection circuit malfunction, and you should contact customer service for technical support.
  • K
    Kathleen GonzalezAug 26, 2025
    How to fix AC Freq High (E01) error on my Delta M60U Inverter?
    • T
      Tracy MitchellAug 26, 2025
      If the Delta Inverter displays 'AC Freq High (E01)', it could be due to several reasons: 1. The actual utility frequency is over the OFR setting, so check the utility frequency. 2. The Grid code setting is incorrect, so check it. 3. In case the issue persists, there may be a detection circuit malfunction, and you should contact customer service for technical support.
  • J
    Johnny JohnsonAug 25, 2025
    Why does my Delta M60U show 'No Grid (E09)' error?
    • C
      Cassandra WebsterAug 26, 2025
      If your Delta Inverter is showing a 'No Grid (E09)' error, the possible causes are: 1. The AC breaker is OFF. In this case switch on the AC breaker. 2. There is a disconnection in the AC terminal. In this case check the connection in the AC terminal and ensure it connects to the inverter.

Summary

Safety

Information of the Inverter

Provides legal provisions and identifies the target audience for the manual.

General Safety

Covers essential safety practices, warnings, and symbols for safe operation.

Introduction

Valid Model

Lists the supported inverter model numbers for which this manual is applicable.

Product Overview

Details the inverter's components, models, and general features with diagrams.

Installation

Mechanical Installation

Guides on physical mounting of the inverter, including wall and tilt options.

Electrical Installation for AC Wiring

Covers AC wiring procedures, connections, and required devices for grid connection.

Electrical Installation for DC Wiring

Covers DC wiring procedures, connections, and grounding for PV array inputs.

Communication Module Connections

Explains how to connect communication modules and RS-485 interfaces.

Commissioning

First startup

Outlines the initial setup routine for language, grid code, and ID settings.

Main Menu Functions

Introduces the inverter's operational menu, including monitoring and settings.

Install Settings

Accesses critical configuration parameters like Inverter ID, Grid Code, and Grid Settings.

Maintenance

Removing and re-installing the Wiring Box (WB) cover

Provides procedures for accessing the inverter's internal components.

Component Replacement

Procedures for replacing SPD, fuses, and fans, ensuring system integrity.

De-Commissioning

Outlines the safe procedure for removing the inverter from operation.

Error message and Trouble Shooting

Error, Warning, and Fault Codes

Lists common error messages, their causes, and troubleshooting actions.

Calling for Help

Provides information required for contacting technical support efficiently.

Technical Information

M80 U Series Specifications

Lists detailed technical specifications for the M80U inverter models.

M60 U Series Specifications

Lists detailed technical specifications for the M60U inverter models.

APPENDIX: Grid Support Utility Interactive Inverters

Appendix A: Rule 21

Details CA Rule 21 settings for voltage and frequency ride-through.

Appendix B: HECO

Provides HECO specific settings for ride-through capabilities.

Appendix C: Assembly Note

Offers assembly guidance and screw torque specifications for various models.

Delta M60U Specifications

General IconGeneral
AC Voltage [V]400
Output Power60 kVA
Frequency50 / 60 Hz
CategoryInverter
Output Voltage400 V
Protection FeaturesOvervoltage protection

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