Grid-tie transformerless solar inverter (170 pages)
Summary of Contents for Delta M15A-220
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The power behind competitiveness Grid-tie Transformerless Solar Inverter M15A_220 / M20A_220 Operation and Installation Manual English 繁體中文 www.deltaww.com...
DELTA ELECTRONICS, INC. Service engineers and end users may not divulge the information contained herein or use this manual for purpose other than those strictly connected with correct use of the product.
This user manual provides important instructions for DELTA grid-tie transformerless solar inverter. The product is designed, tested, verified, and certified according to international safety requirements, certifications, and standards but precautions must be observed when installing and operating the product.
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.
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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 that unheeded can lead to death or serious injury.
The user manual is valid for the following device types: • M15A_220 • M20A_220 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.
④ ⑤ ⑥ ⑦ Figure 2-1: Components Table 2-1: Packing list M15A_220 / M20A_220 Object Description Delta Solar Inverter 1 pc Solar inverter Wall mounting bracket 1 pc Mounting Bracket (Material: Aluminum/Thickness: 3mm) Important instructions for solar inverter. User Manual...
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Introduction ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ Figure 2-2: Overview Table 2-2: Overview description Component Component Component Toggle Latch DC Switch SUB_1G module port (option) Gland for AC output Wi-Fi Antenna port (option) Gland for RS-485 DC input (H4) x 4 strings...
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Made in China Made in China VDE-AR-N-4105 VDE-AR-N-4105 IEC 62109-1/-2 Authorized representative IEC 62109-1/-2 Authorized representative Delta Electronics (Netherlands) B.V. Delta Electronics (Netherlands) B.V. CNS 15382 CNS 15382 Zandsteen 15, 2132 MZ Hoofddorp, Zandsteen 15, 2132 MZ Hoofddorp, CNS 15426-1/-2 CNS 15426-1/-2...
Installation 3 Installation CAUTION ! - High temperature may result in derated power output, the unit should not be installed in direct sunlight. - Risk of injury when lifting the inverter or if it is dropped. WARNING ! - Do not install the unit near or on flammable surfaces. - Please mount the unit tightly on a solid / smooth surface.
Installation 3.1 Unboxing & Review The unpacking procedure is shown as Figure 3-1. The position of hook attachment for crane transporting is shown as Figure 3-2. Figure 3-1: Steps to unpacke the inverter...
Installation 3.2 Vertical wall mount Refer to Figures 3-4 to Figure 3-7. 1. Ensure the surface to which the unit is to be mounted is sufficiently strong enough to carry the weight of inverter. 2. Orient the wall bracket (Figure 3-4) horizontally (perpendicular to the floor). 3.
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Installation 116.6 unit: mm Figure 3-4: Mounting bracket dimensions * Screw: M6 Required position of at least 8 screws for mounting bracket * Screw: M5 Figure 3-5 : Positions of mounting screws...
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Installation >200mm >200mm >300mm >300mm >300mm >500mm * >500mm * * Make sure it is high enough to have sufficient space for wiring. Figure 3-6: Separation distance of plural inverters Figure 3-7: Permitted and prohibited mounting positions...
Installation 3.3 Electrical Installation for AC Wiring DANGER : ELECTRICAL HAZARD!! - To avoid shock hazard during wiring, ensure any live grid connections are removed from the inverter. WARNING ! - Code compliance is the installer's responsibility. CAUTION : INVERTER AND EQUIPMENT DAMAGE MAY OCCUR ! - Installation for AC plug must meet the local electrical code.
Installation 3.3.1 AC Grid Types and Connections ATTENTION The default AC Grid connection is 3Ø-3W. It can also connect 3Ø-4W with Neutral (N). The inverter will operate from the following grid connections without need of an external transformer: TNC system TNC-S system 220/380V, 230/400V 220/380V, 230/400V...
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Installation Follow the steps below to strip the wires before assembling the AC plug: • Strip the outer jacket from the cable for 70mm. • Strip 22 ± 2mm of insulation from all wires ends. 70 mm (MAX) 22±2 mm Conductor cross-section: Cu: 13.3 mm²...
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Installation For Cu AC wires: AC cables should be flexible unarmored multi-strand and with suitable ampacity. For Al AC wires: To make sure good conductivity, bi-metal sleeves must be used in conjunction with aluminum wires. (Shown as Figure 3-9) Figure 3-9 : Bi-metal sleeves NOTICE Extreme temperature rise at the clamping point If the contact resistance between the aluminum conductor and clamping point is too...
Installation 3.3.4 AC Wiring 1. The packing has a AC Plug, please rotate it to release part A & B. (Figure 3-10) 2. Insert the cable into Part A (AC gland), and fix the internal wires (tighten by Φ2.5mm wrench with 2.5 N ・ m torque) into Part B . (Figure 3-12) 3.
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Installation Part B 13.3~25 mm² (6~4 AWG) * tighten torque: 2.5 N • m For 3P4W Power system : For 3P3W Power system : There are 5 wires that include There are 4 wires that include (L1、L2、L3、N) + PE (L1、L2、L3) + PE Figure 3-12 : AC wiring Figure 3-13 : Rotate the AC plug to fit...
Installation 3.4 Electrical Installation for DC Wiring DANGER : ELECTRICAL HAZARD!! - PV arrays convert sunlight into electric power with high DC voltage and high DC current which can cause dangerous electrical shock! - Use opaque material to cover the PV arrays before wiring or cabling. - Ensure the correct polarities are connected when DC cabling is applied.
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Installation Please read the following instructions for connecting DC connector : • Ensure the DC conductors used are Cu and sized to the correct ampacity per NEC or other local code • Strip off all wires for 6.5~7.5 mm. • The cross-sectional area for each DC conductor is 12~10 AWG (4~6 mm²). •...
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Installation Figure 3-15: Location of H4 connectors to connect array wiring (DC)
Installation 3.5 Equipment Grounding To ground the inverter, please crimp the grounding wire to ring terminal lug and fix it on the grounding point shown as Figure 3-16. * Screw: M5 Figure 3-16: Mount the equipment grounding...
Installation 3.6 Communication Module Connections The communication module of M15A_220 / M20A_220 is shown in Figure 3-17. It provides VCC(12V), RS-485, dry contact, EPO, and digital input terminals for various applications, and it can be extended to ability to use Wi-Fi and Sub_1G. V1 x1 &...
Installation 3.6.1 Accessing the Communication Module The communication module consists of an assembly with a PCB and a plastic carrier. It is located in slot through the bottom of the chassis. It can be accessed from the chassis bottom outside. The carrier is fixed to the chassis by two self-retaining screws.
Installation 3.6.2 RS-485 Connection The pin definition for the RS-485 terminal block is shown in Table 3-3. - Pins 1 and 2 provide a 12VDC bus for use with accessories. (If use of the 12VDC bus is necessary, please set switch 1 to the ON position.) - Pins 3 and 5 are both connected to the DATA+ input.
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Installation Terminal Resistor 120Ω(1/2W) DATA+ to DATA- RS485/USB RS485/RS232 Figure 3-19: Multiinverter connection illustration Table 3-4: Bus Termination switch settings Switch 1 Terminal Resistor ON Terminal Resistor OFF...
3.6.3 EPO Function & Digital Input The communication Module has an emergency power off function (EPO). Users can customize EPO function in APP or Delta Solar System (DSS). Figure 3-20: EPO and digital input function terminal block Once enabled, the EPO function can be used to turn off the inverter through the relayless contacts connected to terminals [V1 &...
Installation 3.6.4 Dry Contact Connection M15A_220 / M20A_220 provides 2 sets of dry contacts, which can be used to control external devices according to the operating status of the inverter. The terminal block for this function is shown in Figure 3-21. The terminals marked in the figure identify the dry contact connection.
Installation 3.6.5 Wi-Fi (option) The communication module supports the inverter to communicate with devices (such as smartphones, tablets, etc.) via Wi-Fi. The Wi-Fi module consists of an assembly with a PCB, a plastic carrier, and an antenna. It can be connected by plugging into the bottom of chassis. 1.
Commissioning 3.6.6 SUB_1G (option) The SUB_1G module consists of an assembly with a PCB, a plastic case, a signal cable, and an antenna. It should be installed on the right side of the chassis. 1. Secure the plastic case on the chassis with 2 M4 screws by following torque. 2.
Installation 3.7 On-Site Insulation Test If on-site insulation testing is required, make sure: 1. The DC switch is in the “OFF” position. 2. Place one probe in any DC connectors shown in Figure 3-24 and the other on the ground. DC Switch DC connectors Figure 3-24: Precautions for on-site insulation test...
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 or wear appropriate personal protective equipment. 4.1 LED Signals M15A_220 / M20A_220 with 3 LEDs can visually display the status of the inverter, as shown in Figure 4-1.
Commissioning 4.2 Auto ID Commission Tool The Auto ID function could set all inverter IDs at monitoring center after wiring RS-485. ATTENTION Please download the software from the following website: https://mydeltasolar.deltaww.com/dl_installer_guide.php?f=autoid 4.2.1 Auto ID Setting Open the software 1. Select COM Port and click 2.
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Commissioning The numbers of ID setting less than amounts of inverter, status show False. The numbers of ID setting more than amounts of inverter, status show False. Figure 4-3: False of auto ID setting by tool...
Commissioning 4.2.2 Set ID To adjust the ID order, please follow the settings below. 1. Enter the ID you want to change . 2. Click to complete. Figure 4-4: Steps of set ID The wrong ID setting of overlapping. Figure 4-5: False of set ID...
Commissioning 4.2.3 Set Country Set country by the AUTO ID. 1. Entry the local country ID number. 2. Click the to complete country setting. Figure 4-6: Steps of set country Enter as a country that does not exist. Figure 4-7: False of set country...
Commissioning 4.2.4 Synchronize time Synchronize time by Auto ID tool. Click the to complete time setting. Figure 4-8: Steps of synchronize time Interference problem make sync time fail, please try again. Figure 4-9: False of synchronize time...
Commissioning 4.3 Delta Function Setting Delta offers two settings: DSS and APP (MyDeltaSolar) Please go to the following link to refer to the setting method manual. DSS: https://mydeltasolar.deltaww.com/manual/eng/SUB_1G/DSS.pdf APP (MyDeltaSolar): https://mydeltasolar.deltaww.com/?p=product_manual Data Collector > PPM DC1_100 Operation and Installation Manual...
5 Maintenance Regular maintenance can ensure that the inverter maintains great performance. DELTA recommends that the unit should be inspected at least every 6 months. The maintenance frequency should be adjustable, depending on the sit environment, different seasons and weather effects.
Maintenance Figure 5-2: To secure door by hexagon driver 5.1.2 Close Door ATTENTION - Due to corrosion of live parts, excessive moisture or dust in the inverter may cause accidental damage. Ensuring that the inner of the inverter is clean free from unreasonable pollution is important for long service operating systems.
Maintenance 5.2 Replacement of Surge Protection Devices (SPD) Locations of Surge Protection Devices (SPD) for AC and DC wiring are shown below. The SPD should be replaced if damaged. AC SPD DC SPD Figure 5-3: Location of AC and DC SPD board AC SPD DC SPD Figure 5-4: AC and DC SPD module...
Maintenance 5.2.1 Replace AC SPD 1. Turn off the AC and DC power, and wait until the LED indicators turns off. 2. Follow Section 5.1.1 to open the door. 3. Loosen 3 screws, remove wires and disconnect signal cable to take off AC SPD. 4.
Maintenance 5.2.2 Replace DC SPD 1. Turn off the AC and DC power, and wait until the LED indicators turns off. 2. Follow Section 5.1.1 to open the door. 3. Loosen 3 screws, remove wires and disconnect signal cable to take off DC SPD. 4.
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Maintenance FRONT * Screw torque: 0.8 N•m BACK Figure 5-8: Remove wirings as connectors of DC SPD...
Maintenance 5.3 De-Commissioning If it is necessary to remove the inverter from active operation for maintenance or replacement, please follow the instructions below. DANGER : ELECTRICAL HAZARD!! To avoid serious injury, please follow the procedure below. CAUTION : HOT SURFACES, DO NOT TOUCH ! - Please be careful of hot surfaces if the inverter is just shutting down.
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”...
Error Message and Trouble Shooting 6.2 Fault Codes (Inverter Fault) Table 6-2A: Fault Codes (inverter fault) & Messages Message Description Action Contact customer service for Injection Utility waveform is abnormal technical support (F01) Temperature The internal ambient is over Check the installation ambient and High high temperature limit environment...
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Error Message and Trouble Shooting Table 6-2B: Fault Codes (inverter fault) & Messages Message Description Action Red COMM The internal communication Contact customer service for Fault connection is disconnected technical support (F22) DSP COMM The internal communication Contact customer service for Fault connection is disconnected technical support...
Technical Information 7 Technical Information Table 7-1A: Specifications Model M15A_220 M20A_220 DC Input Occasionally Max. Voltage 1100 V * Operating Voltage Range 200 - 1000 V MPP Voltage Range @ AC400V 355 - 900 V 430 - 900 V Start Voltage >...
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Technical Information Table 7-1B: Specifications Model M15A_220 M20A_220 Efficiency Peak Efficiency 98.4 % 98.4 % 97.9 % 98.1 % Euro Efficiency Information Communication Port RS-485 / SUB_1G (optional) / Wi-Fi (optional) Regulation IEC 62109-1/-2 IEC 62920 CNS 15426-1/-2 CNS 15382 VDE-AR-N 4105 VDE-AR-N 4110 EN/IEC 61000-6-1/-2...
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Technical Information Figure 7-1: Efficiency Curve...
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Technical Information Figure 7-2: Power Derating Curve with Ambient Temprature (PF=1)
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Technical Information Figure 7-3: Power Derating Curve with Ambient Temprature (PF=0.9)
Technical Information Appendix: Assembly Note ① ② ③ Appendix-1: Assembly Note-1 Location Screw torque Wi-Fi module cover 8.0 kgf-cm (0.8N• m) Communication cover 8.0 kgf-cm (0.8N• m) SUB_1G case 10.2 kgf-cm (1N•m)
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Technical Information ① ② ③ ④ ⑤ ① ② ④ ⑤ H4CFC4D-MS H4CMC4D-MS Appendix-2: Assembly Note-2 Location Screw torque Conductor cross-section AC SPD board 8.0 kgf-cm (0.8N•m) DC SPD board 8.0 kgf-cm (0.8N•m) 7.1 kgf-cm (0.7N•m) 8 AWG (8 mm ² )~6 AWG (14 mm ² ) AC wire Communication port 20 AWG (0.5mm²)
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The power behind competitiveness 三相併網型變流器 M15A_220 / M20A_220 操作手冊 English 繁體中文 www.deltaww.com...
產品介紹 ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ 圖 2-2 : 外觀 表 2-2 : 外觀介紹 Component Component Component Toggle Latch DC Switch SUB_1G module port (option) Cable gland for AC output Wi-Fi Antenna port (option) Cable gland for RS-485 DC input (H4) x 4 strings...
安裝 3.6.5 Wi-Fi (選配) 通訊模組支援變流器透過Wi-Fi功能與智慧型手機或平板電腦等裝置連接。 通訊模組包含PCB組件、保護外蓋及天線,安裝方式如下: 1. 鬆開兩顆防脫落螺絲 2. 卸除機體上的保護蓋 3. 以0.8N‧m扭矩值安裝Wi-Fi模組並鎖上天線 ① ② ③ * 螺絲扭矩值: 0.8 N • m 圖 3-22 : Wi-Fi模組安裝...
維護 5.2 更換雷擊保護裝置 (SPD) M15A_220 / M20A_220 在交流與直流端皆具有可更換的雷擊保護裝置。 AC SPD DC SPD 圖 5-3 : 交流與直流側雷擊保護裝置位置 交流側 直流側 圖 5-4 : 交流與直流側的雷擊保護裝置 當APP或DSS出現故障訊息「W18- AC Surge」 或 「W17- DC Surge」時, 請 遵循以下步驟更換雷擊保護裝置。...
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