Delta M60U 260 Operation And Installation Manual
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Delta M60U 260 Operation And Installation Manual

Delta M60U 260 Operation And Installation Manual

Grid-tie transformerless solar inverter
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Grid-tie Transformerless Solar Inverter
M60U_260
Operation and Installation Manual
www.deltaww.com

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Summary of Contents for Delta M60U 260

  • Page 1 Grid-tie Transformerless Solar Inverter M60U_260 Operation and Installation Manual www.deltaww.com...

  • Page 3: Table Of Contents

    Contents ......... . . 1　Safety .
  • Page 4 　 4.4　 Delta Function Setting ........
  • Page 5 Figure ........Figure 2-1: Components .
  • Page 6 ......Figure 5-1: Opening and closing the door ......Figure 5-2: To secure door by hexagon driver .
  • Page 7 Table ........Table 2-1: Packing list .

  • Page 8: 1　Safety

    This manual's technical instructions and illustrations are to be treated as confidential. No part may be reproduced without the prior written consent of Delta Electronics Inc. End users may not divulge the information contained herein or use this manual for purposes other than those strictly connected with the correct use of this purpose.

  • Page 9: General Safety

    This user manual provides important instructions for the Delta inverter. which has been designed, tested, verified, and certified according to international safety requirements, certifications, and standards;...

  • Page 10: Symbols

    Safety 1.2.2 Symbols This section describes the definition of the symbols in this manual. In order to prevent both personal injury and property damage, and to ensure long-term operation of the product, please read this section carefully and follow all the safety instructions while you use the product. DANGER! - This warning indicates an immediate hazard which will lead to death or serious injury.
  • Page 11 Safety INFORMATION - An exclamation mark enclosed in a double circle indicates additional important information is contained in the following section and the user should follow the instructions to prevent any hazards. DANGER : ELECTRICAL HAZARD!! - This warning indicates an immediate electrical hazard when unheeded can lead to death or serious injury.

  • Page 12: 2　Introduction

    The user manual is valid for the following device type: • M60U_260 This user manual must be followed during installation, operation, and maintenance. DELTA reserves the right to make modifications to the content and technical data in this user manual without prior notice.

  • Page 13: Product Overview

    ⑤ ⑥ ⑦ Figure 2-1: Components Table 2-1: Packing list M60U_260 Object Description Delta Solar Inverter 1 pc Solar inverter Important instructions for solar inverter. User Manual 1 pc Safety instructions should be followed during installation and maintenance. Wall mounting bracket...
  • Page 14 Introduction ⑫ ⑫ ④ ⑤ ① ② ③ ⑦ ⑧ ⑦ ⑨ ⑩ ⑪ ⑦ ⑥ Figure 2-2: Overview Table 2-2: Overview description Component Component Component External fans DC Switches AC Switch Communication port Grounding bar LED Indicator 2” opening for AC output External grounding (M6 threaded stud) DC Input (H4)x 12 strings Air cooling outlet...
  • Page 15 Introduction Figure 2-3 below, shows the certification and rating label. Table 2-3 defines the symbol markings on this label. Figure 2-3: Rating label Table 2-3: Rating label explanation Symbol Definition Danger to life through electric shock Potentially fatal voltage is applied to the inverter during operation. Never open inverter before 60 seconds after disconnecting all the power source.
  • Page 16 Introduction Figure 2-4: External/ internal view...
  • Page 17 Introduction ⑦ ① ④ ⑤ ② ③ ⑥ ⑧ Figure 2-5: layout Table 2-4: layout description Component Component Component Communication module Internal fan 1 Type II DC SPD AC terminal Internal fan 2 Rapid Shutdown Transmitter Internal grounding Type II AC SPD DANGER : ELECTRICAL HAZARD!! - Please avoid touching the live area with the hazard sign when the DC insulated cover is removed, even if the DC switches are OFF.

  • Page 18: 3　Installation

    Installation 3 Installation WARNING ! - Do not install the unit near or on flammable surfaces. - Inverter must be mounted securely to a solid / smooth surface. - Ensure the installation complies with local code and electrical regulations. CAUTION ! - In some locations, mounting the inverter in direct sunlight may cause the inverter operate over nominal thermal rating range, and the unit need to derated.

  • Page 19: Unboxing & Review

    Installation 3.1 Unboxing & Review Unpacking the case, please follow the order of Figure 3-1. It should be transported by 2 people (Figure 3-2) . For ground mount installation It is recommended to install the grounded brackets first at this step. For detailed installation methods, Need more than please see section 3.2.2.
  • Page 20 Installation Manual handling Applying force on fan, fan shutters, DC connectors, or AC/DC switches are prohibited. Hoisting After hoisting, please keep the screw plugs on the casing to prevent water from entering. Screw plug Hoisting ring (35 lbf-in) (M12 x P1.75, L ≤ 0.8 inch) (372 lbf-in) Figure 3-2: Lift the inverter...

  • Page 21: Mechanical Installation

    Installation 3.2 Mechanical Installation This unit is designed to be wall-mounted per Section 3.2.1 or ground mounted Section 3.2.2. 3.2.1 Vertical Wall Mount Refer to Figure 3-4 to Figure 3-9. 1. The surface for hanging the inverter must be sufficiently sturdy to support its weight.
  • Page 22 Installation 24.76 in 0.88 in 27.52 in 10.39 in Figure 3-3: Inverter dimensions 18.1 unit: in 15.75 0.26 0.47 0.28 23.3 Figure 3-4: Mounting bracket dimensions...
  • Page 23 Installation Positions for least amount of mounting bracket screws Screw: M6 Screw: M6 0.47 in 0.28 in Figure 3-5 : Positions of mounting screws > 11 in Figure 3-6: Permitted mounting positions...
  • Page 24 Installation Figure 3-7: Prohibited mounting positions When using flexible metal conduit, please reserve at least 22.2 in for installing space. Wall > 39 in > 12.6 in > 16.3 in > 33 in > 27.6 in Inverter #1 Inverter #2 >...
  • Page 25 Installation Without Clapboard >7.87 in >7.87 in >23.6 in >11.8 in >11.8 in >17.7 in* >4.7 in** >4.7 in ** * When using flexible metal conduit on AC side, please reserve at least 17.7 in for conduit bending space. ** If the installation location has a risk of flooding or accumulated snow, please raise the appropriate height of the inverter.

  • Page 26: Ground Mount (Optional)

    Installation 3.2.2 Ground Mount (optional) ATTENTION - Ensure the grounded base is strong enough to hold the weight of the inverter. Grounded Bracket kit is an optional part, please contact the customer service center for the detail. 1. Fix the grounded brackets to the bottom of the inverter as Figure 3-10. 2.
  • Page 27 Installation Φ0.5 in 12.2 in 18 in 25.65 in height * 4.7 in * If the installation location has a risk of flooding or accumulated snow, please raise the appropriate height of the inverter. * Expansion bolts size: M12 Figure 3-11: To secure inverter grounded brackets to ground-mounting base...

  • Page 28: Door

    Installation 3.3 Door In order to ensure the normal long-term operation of the inverter, please follow the procedures in Section 5.1 to open and close the door. If the installation space is too narrow for the wiring operation, please remove the door according to Figure 3-12.

  • Page 29: Ac Grid Types And Connections

    Installation 3.4.1 AC Grid Types and Connections ATTENTION The default AC Grid connection is 3Ø-4W. It can also connect 3Ø-3W without Neutral (N). The inverter will operate from the following grid connections without need of an external transformer: TNC system TNC-S system 277/480V 277/480V...

  • Page 30: Ac Wiring Preparation

    Installation 3.4.4 AC Wiring Preparation • The cross-sectional area for each AC conductor is shown below. • The information and notice of cable using is shown on next page. Conductor cross-section: outer Cu: 25 mm (2 AWG) ~ 60 mm (2/0 AWG) jacket Al: 35 mm...

  • Page 31: Ac Side -Prewire Set-Up

    Installation 3.4.5 AC Side –Prewire Set-Up Prior to installing cables to the unit, please treat all exposed wires with a conductive grease such as Noalox to prevent corrosion. Each connection should be installed with the specified torque (L1~L3: 110 lbf-in, PE:130 lbf-in) by the 3/16’’ (5mm) hex socket.

  • Page 32: Ac Wiring

    Installation 3.4.6 AC Wiring Refer to Figure 3-13 in Section 3.4 for the procedure to prepare AC conductors for connection to the AC terminals. Ensure the AC conductors used are sized to the correct ampacity per NEC or other local code. After inserting conductors, torque terminal nuts by 110 lbf-in (PE: 130 lbf-in)

  • Page 33: Electrical Installation For Dc Wiring

    Installation 3.5 Electrical Installation for DC Wiring DANGER : ELECTRICAL HAZARD!! - PV array converts sunlight into electric power with high DC voltage and high   DC current which can cause dangerous electrical shock hazard! - Use an opaque material to cover the PV array before wiring or cabling. - Ensure the correct polarities are connected when cabling.

  • Page 34: Dc Wiring Installation

    Installation 3.5.1 DC Wiring Installation Please read the following instructions for preparing/connecting connectors: • Ensure the DC conductors used are Cu and sized to the correct ampacity per NEC or other local code • Strip off 1/4~0.3 in. from all DC wires •...
  • Page 35 Installation SWITCH 1 SWITCH 2 Figure 3-16: Location of H4 connectors to connect array wiring (DC)
  • Page 36 Installation PUSH PUSH Mandatory to install protective frames (item 5, Figure 2-1) before plugging in DC connectors. Figure 3-17: Installation methods for protective frame...

  • Page 37: Equipment Grounding

    Installation 3.5.2 Equipment Grounding To ground the inverter, please crimp the grounding wire to ring terminal lug and fix it on the grounding point shown in the figure below. An extra grounding bar shown in the figure below accommodates grounding conductors in the range of 4AWG ~ 14AWG, conductors torque: 26 lbf-in Grounding points Grounding bar...

  • Page 38: Communication Module Connections

    Installation 3.6 Communication Module Connections The communication module of M60U_260 is shown in Figure 3-19. It provides VCC, RS-485, dry contact, EPO, and Digital Input terminals for use in various applications. Details for each are presented below. There's a 12 VDC source between VCC & GND (not the PE) for use with external device.
  • Page 39 Installation Please refer to Section 5.1.1 on how to open the door. The location of the communication module is in the red circle shown below. Φ0.28in* Φ0.39in Φ0.28in* Φ0.39in * Removing the rubber stopper in the Φ0.28 in hole can extend it to Φ0.34 in for use.

  • Page 40: Rs-485 Connection

    Installation 3.6.1 RS-485 Connection The pin definition for the RS-485 terminal block is shown in Table 3-1. - Pins 1 and 2 provide a 12VDC / 0.5A bus for use with accessories. - Pins 3 and 5 are both connected to the DATA+ input. - Pins 4 and 6 are both connected to the DATA - input.
  • Page 41 Installation Terminal Resistor 120Ω(1/2W) DATA+ to DATA- RS485/USB RS485/RS232 Figure 3-21: Multiinverter connection illustration Termination switch Table 3-2: Bus Termination switch settings Switch 1 Terminal Resistor ON Terminal Resistor OFF...

  • Page 42: Epo Function & Digital Input

    3.6.2 EPO Function & Digital Input The communication Module has an Emergency Power Off function (EPO). Users can customize the EPO function in APP or Delta Solar System (DSS). VCC K0 K1 K2 K3 K4 K5 K6 Figure 3-22: EPO function terminal block Once enabled, the EPO function can be used to turn off the inverter via a NO relay switching contactor for operating short/open between terminal VCC &...

  • Page 43: Dry Contact Connection

    Installation 3.6.3 Dry Contact Connection M60U_260 provides dry control contact pairs that may be used to control external devices such as warning indicator based on the status of operation of the inverter. The terminal block for this function is shown in Figure 3-23. The terminals marked in the figure identify the dry contact connection.

  • Page 44: 4　Commissioning

    Commissioning 4 Commissioning CAUTION : HOT SURFACES, DO NOT TOUCH! - Use care to avoid hot surfaces when operating the product! - Do not perform any task until the unit cools down to touchable temperature or appropriate personal protection equipment is worn. 4.1 Display Operation Introduction M60U_260 has 3 LEDs which allows visual display of the inverter’s data and status as shown in Figure 4-1.

  • Page 45: Commission An Inverter Individually - Bluetooth

    (iOS user) (Android user) DeltaSolar About OS version iOS: 8.0 and above Android OS: Android DELTA ELECTRONICS, INC. 8.0 and above QR Code Android Start Commissioning the Inverter ① Enable the Bluetooth function of your mobile device. ② Click the Bluetooth icon on the bottom right corner.
  • Page 46 Commissioning ④ Select “Local Setting” sheet and click “Grid Setting”. ⑤ Click “Inverter ID” to select the required ID and then click “Inverter ID Set”. ⑥ Click “Country” to select the required grid code and then click “Set”. ⑦ Done. Figure 4-3: Steps to commission via bluetooth (4-7) Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user authority to operate the equipment.

  • Page 47: Commission Multiple Inverters - Auto Id Function

    Commissioning 4.3 Commission multiple inverters – Auto ID Function The Auto ID function can set all inverter IDs at once by DSS (Delta Solar System) - DSS (Please reach out to local service team for DSS) Connect the inverter through RS-485 with computer.

  • Page 48: Scan Inverter

    Commissioning 4.3.2 Scan inverter ① Click “Auto ID ” ② Enter numbers of inverters. ③ Click “Scan”. ① ② ③ Figure 4-5: Steps of scanning inverters...

  • Page 49: Set Id

    Commissioning 4.3.3 Set ID ① The serial number of the successfully scanned device will be displayed below, the default ID can be changed. ② After ID setting is completed, click “Set ID”. ② ① Figure 4-6: Steps of ID setting...

  • Page 50: Set Country

    Commissioning 4.3.4 Set Country ① Click to select the Country (grid code) of inverter. ② Click “Set”. ① ② Figure 4-7: Steps of country setting...

  • Page 51: Synchronize Time

    Commissioning 4.3.5 Synchronize time Click “Sync Clock ” to Synchronize time. Figure 4-8: Steps of time synchronization...

  • Page 52: Delta Function Setting

    Commissioning 4.4 Delta Function Setting Function Active power control Q(U) control (volt-var control) P-F control (watt-frequecy control) Q by night(Q setting 24/7) P(U) control (volt-watt control) Anti-PID Fixed cosφ Dry contact Fixed Q(%) ARC fault detection Auto ID Bluetooth Please refer to the following link for operation manual and function details.

  • Page 53: 5　Maintenance

    Maintenance 5　Maintenance Please check the unit regularly. If there are any damaged or loose parts, please contact your solar installer. Ensure that there are no fallen objects in the path of the heat outlet. DANGER : ELECTRICAL HAZARD!! - Before beginning any maintenance procedures, turn off the AC switch of the inverter first and then the DC switches to avoid the risk of electrical shock! - Without rain cover or protection, never perform any wiring or maintenance operations under rainy conditions.
  • Page 54 Maintenance ① ③ ② ② ① Figure 5-1: Opening and closing the door...
  • Page 55 Maintenance ATTENTION - After opening the door, please make sure the door is fixed by the hexagon driver to avoid strong wind breaking it. Figure 5-2: To secure door by hexagon driver...

  • Page 56: Replacement Of Surge Protection Devices (Spd)

    Maintenance 5.2 Replacement of Surge Protection Devices (SPD) M60U_260 have surge protection devices (SPD) at both AC and DC side as shown in Figure 5-3. Surge protection devices (SPD) are designed to protect sensitive circuit elements of the inverter from damage caused by lightning and other electrical transients/surges, as such they are sacrificial components and periodically, may need replacement.
  • Page 57 Maintenance • Accessing the door 1. Switch DC and AC power off and wait until LED display turns off. 2. To access the door, use procedure found in Section 5.1.1 Do not leave the door opened for long periods of time. •...
  • Page 58 Maintenance DC SPD AC SPD * Screw torque: 7 lbf-in Please pre-lock manually before using an electric screwdriver to lock to the recommended torque. Figure 5-5: Steps of changing SPDs...
  • Page 59 Maintenance Signal Signal AC SPDs * A: Screw torque 22 lbf-in * G: Screw torque 7 lbf-in Figure 5-6: Remove wirings as connectors of AC SPD DC SPDs * A: Screw torque 22 lbf-in * G: Screw torque 7 lbf-in Signal Figure 5-7: Remove wirings as connectors of DC SPD...

  • Page 60: Smart Fans Replacement And Filter Cleaning

    Periodic fan and filter cleaning is required to ensure long life and reliability. - The time period between cleanings depends on the quality of the environment. - Under normal duty use, Delta recommends smart fans and filters be cleaned every 4 months - For very dusty locations, it may be necessary to clean the fans and filters quarterly or monthly.

  • Page 61: Location Of Failure Fan

    Maintenance 5.3.1 Location of failure fan If the error event list shows "Fan Fail", please refer to the corresponding code shown on DSS and procedure in following chapters to remove the fan. Internal External Figure 5-8: The corresponding fan location to the fan fail code on DSS...

  • Page 62: Power Module (Pm) Fan Tray

    Maintenance 5.3.2 Power Module (PM) Fan Tray DANGER : ELECTRICAL HAZARD!! - Before beginning any maintenance procedures, turn off the AC switch of the inverter first and then the DC switches to avoid the risk of electrical shock! The inverter electronics are convection cooled. The primary equipment used for this function consists of a fan tray located in a plenum within the inverter.
  • Page 63 Maintenance ① * Screw torque: 12 lbf-in ② snap-fit ③ * Screw torque required for assembling: 5 lbf-in Figure 5-9: Disassembling fan tray from PM chassis...

  • Page 64: Internal Fan 1

    Maintenance 5.3.3 Internal Fan 1 If the warrning "Fan Fail- Internal F01" show on the DSS / APP, please follow the procedure below to remove Internal Fan 1. (1) Open the front door as instructed in Section 5.1.1. (2) Remove the DC SPD cover. (shown in Figure 5-10) (3) Disconnect the fan connector on the DC SPD board.
  • Page 65 Maintenance ⑤ * Screw torque required for assembling: 7 lbf-in Figure 5-11: Take off the internal fan 1 ⑥ * Screw torque required for assembling: 5 lbf-in Figure 5-12: Replace with a new fan...

  • Page 66: Internal Fan 2

    Maintenance 5.3.4 Internal Fan 2 If the warrning "Fan Fail- Internal F00" show on the DSS / APP, please follow the procedure below to remove Internal Fan 2. (1) Open the front door as instructed in Chapter 5. (2) Disconnect the fan connector on the comm. board as figure below. (3) Loosen two self-retaining screws and remove the fan cabinet.
  • Page 67 Maintenance ④ * Screw torque required for assembling: 7 lbf-in Figure 5-14: Take off the internal fan 2 ⑤ * Screw torque required for assembling: 5 lbf-in Figure 5-15: Replace with a new fan...

  • Page 68: Commissioning

    Maintenance 5.4 De-Commissioning When it's necessary to remove the inverter from operation for replacement or for maintenance purposes, follow the instruction below. DANGER : ELECTRICAL HAZARD!! To avoid serious injury, please follow the local safety protocol and the procedure below. 1.

  • Page 69: 6　Error Message And Trouble Shooting

    Error Message and Trouble Shooting 6　Error Message and Trouble Shooting While Delta Electronics endeavors to build electronic products with high reliability standards, there may still be situations where the inverter may not operate properly. In this case, please follow the instructions in the “Troubleshooting Guide”...

  • Page 70: Fault Codes (Inverter Fault)

    Error Message and Trouble Shooting 6.2 Fault Codes (Inverter Fault) Table 6-2A: Fault codes (inverter fault) & messages Message Description Action DC Injection Contact customer service for Utility waveform is abnormal technical support (F01,F02,F03,F04) Temperature The internal ambient temperature Check the installation ambient and High is over limit environment...
  • Page 71 Error Message and Trouble Shooting Table 6-2B: Fault codes (inverter fault) & messages Message Description Action DSP COMM Fault The internal communication Check the connection interface RS-485 (F23) connection is disconnected Ground Cur. 1. Check the insulation of Solar inputs Insulation problem of PV array High 2.

  • Page 72: Warning Codes (Field Warning)

    Error Message and Trouble Shooting Table 6-2C: Fault codes (inverter fault) & messages Message Description Action DC Current High DC current over range Restart inverter by DC switches (F60,F61,F70,F71) 1. Check the connection between external Ext COMM. Fault The external communication unit and COMM connection is disconnected 2.

  • Page 73: 7　Technical Information

    Technical Information 7　Technical Information Table 7-1A: Specifications Model M60U_260 DC Input Occasionally Max. voltage 1000 V Operating Voltage Range 200 - 1000 V MPP Voltage Range (Full Power) 390 - 900 V * Start Voltage > 250 V Rated Voltage 710 V Max.
  • Page 74 Technical Information Table 7-1B: Specifications Model M60U_260 Efficiency Peak efficiency 98.5 % CEC efficiency 98 % * Euro efficiency 98.2 % Information Communication Port RS-485 / Bluetooth Regulation CSA C22.2 No.107.1-01 UL 1741 SOP/ SA UL1699B IEEE1547_2020 UL 1741 Supplement SB General Data Operating Temp.
  • Page 75 Technical Information Efficiency of M60U_260 Output voltage at 480Vac Efficiency(%) Pn=60kW 100% 390V 710V 850V 900V 100% Output Power (%) Figure 7-1: Efficiency curve...
  • Page 76 Technical Information Active Power De-rating Curves with PV Voltage Output voltage at 480Vac PF=1 Output Power (kW) Pn=60kW Output Power Capability @ Ambient 30°C @ Ambient 40°C @ Ambient 50°C @ Ambient 60°C 1000 Input DC Voltage (V) Figure 7-2: Active power de-rating curves with PV voltage (PF=1)
  • Page 77 Technical Information Active Power De-rating Curves with PV Voltage Output voltage at 480Vac PF=0.9 Output Power (kW) Pn=60kW Output Power Capability @ Ambient 30°C @ Ambient 40°C @ Ambient 50°C @ Ambient 60°C 1000 Input DC Voltage (V) Figure 7-3: Active power de-rating curves with PV voltage (PF=0.9)
  • Page 78 Technical Information Apparent Power De-rating Curves with PV Voltage Output voltage at 480Vac PF=0.9 Output Power (kW) Pn=60kW Output Power Capability @ Ambient 30°C @ Ambient 40°C @ Ambient 50°C @ Ambient 60°C 1000 Input DC Voltage (V) Figure 7-4: Apparent power de-rating curves with PV voltage (PF=0.9)

  • Page 79: Appendix: Assembly Note

    Technical Information Appendix: Assembly Note ③ ④ ① ② ⑤ Appendix-1: Assembly Note-1 Location Screw torque Fan Tray 12 lbf-in (1.4N• m) 5 lbf-in (0.6N•m) Fan Filter 12 lbf-in (1.4N• m) Grounded Bracket 217 lbf-in (24.5N •m) Grounding (M6) 35 lbf-in (3.9N •m)
  • Page 80 Technical Information ③ ② ① ④ ⑤ H4CFC4D-MS H4CMC4D-MS ⑥ Appendix-2: Assembly Note-2 Location Screw torque Conductor cross-section Internal Fan 2 Cover 7 lbf-in (0.8N•m) Internal Fan 2 Tray 5 lbf-in (0.6N•m) Internal Fan 1 Cover 7 lbf-in (0.8N•m) Internal Fan 1 Tray 5 lbf-in (0.6N•m) H4 wire 12~10 AWG (4~6 mm²)
  • Page 81 Technical Information ① ① ④ ⑤ ③ ④ ⑥ ② ③ ② ⑤ ④ Appendix-3: Assembly Note-3 NO Location Screw torque Conductor cross-section DC SPD board A: 22 lbf-in (2.45 N•m) G: 7 lbf-in (0.8 N• m) AC SPD board AC Cover 7 lbf-in (0.8 N•...
  • Page 84 Version 04241023...

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