Related Manuals for Delta M42U
Summary of Contents for Delta M42U
- Page 1 The power behind competitiveness Grid-tie Transformerless Solar Inverter M42U M36U M28U Operation and Installation Manual www.deltaww.com...
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Page 3: Table Of Contents
Table of Contents ......... . . 1 Safety . - Page 4 ........4 Commissioning ...... ...
- Page 5 ...... 7.1 Technical of M42U series ......
- Page 6 ..... Figure 2-1: Components of M42U/M36U/M28U series ........
- Page 7 ....... . . Figure 4-1: Front Panel Display ....Figure 4-2: Grid code, language and ID settings for first startup .
- Page 8 ......Figure 7-1: Thermal Derating curve of M42U ......
- Page 9 ..... . . Table 2-1: Packing list of M42U/M36U/M28U series ..... . .
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Page 10: 1 Safety
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. -
Page 11: General Safety
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. -
Page 12: 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 13 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 HARZARD!! - This warning indicates an immediate electrical hazard that unheeded can lead to death or serious injury.
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Page 14: 2 Introduction
This user manual must be followed during installation, operation, and maintenance. The overview of M42U/M36U/M28U Series each have three models as shown in Figure 2-2. Delta reserves the right to make modifications to the content and technical data in this user manual without prior notice. -
Page 15: Product Overview
Introduction 2.2 Product Overview The components of M42U/M36U/M28U is shown as Figure 2-1. BACK SIDE ① ② ③ ④ ⑤ For 122 model ⑥ ⑦ ⑧ ⑨ ⑩ Figure 2-1: Components of M42U/M36U/M28U series Object Description Delta Solar Inverter 1 pc... -
Page 16: Figure 2-2: Overview
Introduction Air Outlets / M42/36/28U _120 Smart Fans LCD / LED Display and Buttons AC Switch 2" AC Cable Opening RS-485 communications port, Rating Label 3/4" TSO ½" Opening for Air Inlets PE/EGC 2" gland for DC Switch DC Wiring Air Outlets / M42/36/28U _121... -
Page 17: Figure 2-3: Rating Labels Of M42/36/28U
Introduction Figure 2-3 below, shows the rating labels of M42U/M36U/M28U series, and following in Table 2-2, there are definitions of the various symbols found on the labels. Figure 2-4 ~ Figure 2-6 illustrate the differences in the appearance between the various models. -
Page 18: Table 2-2: Rating Label Explanation Of M42/36/28U
Introduction Symbol Definition FCC designation Please read the user manual for further information Danger: Electrical Hazard This icon indicates that a prescribed time delay must elapse before engaging in an indicated action.Electrical hazard might exist before this duration. Warning of the hot surface of the inverter ETL Listed Mark approved by Intertek Lab Certified as Grid Support Utility Interactive Inverter Use noise protection PPE... -
Page 19: Figure 2-4: External View And Wiring Box Layout For 120 Models
Introduction M42U Dual MPPT channels, 6 strings/input M36U Dual MPPT channel, 5 strings/input M28U Dual MPPT channel, 4 strings/input Figure 2-4: External view and Wiring box layout for 120 models... -
Page 20: Figure 2-5: External View And Wiring Box Layout For 121 Models
Introduction M42U Dual MPPT channels, 1 TB pair/input M36U Dual MPPT channels, 1 TB pair/input M28U Dual MPPT channels, 1 TB pair/input Figure 2-5: External view and Wiring box layout for 121 models... -
Page 21: Figure 2-6: External View And Wiring Box Layout For 122 Models
Introduction M42U Dual MPPT channels, 6 strings/input M36U Dual MPPT channels, 5 strings/input M28U Dual MPPT channels, 4 strings/input Figure 2-6: External view and Wiring box layout for 122 models... -
Page 22: Figure 2-7: Wiring Box Layouts
Introduction ⑬ ⑭ -120 Model WB ⑪ ⑫ ⑰ ④ IN 1 IN 1 IN 2 IN 2 ⑩ ⑨ ⑧ ⑩ ⑨ ⑯ ⑥ ⑤ ① ③ ② ③ ⑬ ⑭ -121 Model WB ⑫ ⑪ ⑰ ④ ⑩ ⑯... -
Page 23: 3 Installation
Installation 3 Installation CAUTION ! - In some locations, mounting the inverter in direct sunlight may cause the inverter to enter a thermal derating mode. To eliminate this concern, a shade structure over the inverter chassis may be necessary. WARNING ! - Do not install the unit near or on flammable surfaces. -
Page 24: Horizontal Or Tilt Mount
Installation 3.1.2 Horizontal or Tilt mount 1. Refer to Figure 3-4. Ensure the mounting stand meets the mounting dimensions shown, with the large plate at the lowest end of the stand. Ensure the stand is sufficiently strong enough to carry the inverter weight. 2. -
Page 25: Figure 3-1: Inverter Dimensions
Installation 120 & 121 615 mm [24.2 in] 275 mm [10.8 in] Models 615 mm [24.2 in] 275 mm [10.8 in] Models Figure 3-1: Inverter dimensions... -
Page 26: Figure 3-2: Mounting Bracket Dimensions
Installation 400 mm [15.7 in] 246 mm [9.7 in] 50 mm [2.0 in] 410 mm [16.1 in] Figure 3-2: Mounting bracket dimensions Necessary for vertical mounting Necessary for horizontal mounting Figure 3-3: Required position for at least 8 screws... -
Page 27: Figure 3-4: Permitted Mounting Positions
Installation Max. 90 NAME PLATE COVER A name plate cover must be installed. Make sure the lowest point of the inverter chassis must be ≥ 12” (30cm) from floor surface and not susceptible to water immersion. TYP SUPPORT ≧12” STRUCTURE (≧30cm) ROOF DECK SHIELD... -
Page 28: Figure 3-6: Wall Mount Fixed Prior To Inverter
Installation CAUTION ! 1. Install the wall mount bracket to the rack system prior to installing the inverter Do not allow bending of rhe bracket. See Figure 3-6. 2. When installing the inverter on the rack system, use care not to apply excessive stress/torque as shown in Figure 3-7. -
Page 29: Figure 3-8: Required Mounting Clearances
Installation Wall > 33cm [12.99in] > 20cm [7.9in] > 80cm > 5cm [31.5in] [1.97in] Inverter Inverter > 80cm > 80cm [31.5in] [31.5in] > 50cm [19.69in] Figure 3-8: Required mounting clearances CAUTION ! - Please follow the instructions above such as permitted positions and permitted mounting clearances for the correct installation. -
Page 30: Accessories
Installation 3.1.3 Accessories Included with the inverter hardware are two sheet metal side shields, which can be used to cover the open ends of the air inlet channel as shown in Figure 3-10, and are intended to minimize nesting in the air channel by wildlife. Two shields and associated screws are included. - Page 31 Installation Name plate cover CAUTION ! - Please check the front and the back of the name plate cover BACK SIDE when installing. Small shade: The side with tape is back side. Large shade: The side with word "BACK SIDE" is back side. - After sticking the name plate cover on the inverter, do not remove it in 1 hour to ensure the stickiness of the tape.
- Page 32 Installation Remove name plate cover CAUTION ! If there is needed to monitoring or setting the display, please follow procedure below. ① Separate the large plate. Start monitoring or using the Loose two screws. ② Pull out the large plate. display.
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Page 33: Wiring Box Cover
Installation 3.2 Wiring box cover For first time installing/re-installing WB cover, in order to guarantee proper long-term operation of the inverter, procedures in Section 5.1 must be followed. 3.3 Electrical Installation for AC Wiring DANGER: ELECTRICAL HARZARD!! - To avoid shock hazard during cabling, insure any live grid connections are removed from the inverter. -
Page 34: Ac Grid Types And Connections
3.3.2 Required Protective Devices for M42/36/28U AC Grid North American electrical codes require a dedicated over-current device such as a circuit breaker in line between the inverter and AC source. Model Upstream circuit breaker M42U ≧75A M36U ≧63A M28U ≧50A 3.3.3 AC wiring preparation (all models) -
Page 35: Ac Switch Terminals -Prewire Set-Up
Installation 3.3.4 AC Switch Terminals –Prewire set-up The AC switch terminals utilize cage-clamp design terminals and in order to insure proper connection of wiring, prior to inserting stripped conductors into switch terminals complete the following procedure to make terminals ready for connections. -
Page 36: Ac Wiring For All Models
Installation 3.3.5 AC Wiring for all models Figure 3-12 illustrates the location of the AC conduit entry and connections for AC terminal block: - Open all AC switch cage-clamps as noted in Section 3.3.4 - Ensure the correct conductor is connected to the appropriate terminal. - After conductor is inserted, tighten L1~N terminal with a torque value of 24 lbf-in (2.8 N.m), PE terminal with 31 lbf-in (3.5 N.m). -
Page 37: Electrical Installation For Dc Wiring
Installation 3.4 Electrical Installation for DC Wiring DANGER: ELECTRICAL HARZARD!! - 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 DC cabling is applied. -
Page 38: Dc Wiring Installation For 120 Models
Installation 3.4.1 DC Wiring Installation for 120 models Please read the following instructions for connecting DC terminals (120 models): • Ensure the DC conductors used are Cu and sized to the correct ampacity per NEC or other local code • Strip off all wires for 10~11 mm [0.4~0.43 in]. •... -
Page 39: Dc Wiring Installation For 121 Models
Installation 3.4.2 DC Wiring Installation for 121 models Please read the following instructions for attaching DC terminals (121 models): • These models are designed to be utilized with external combiner boxes and are not provisioned with internal DC combining capability. •... -
Page 40: Figure 3-15: Guideline For Aluminum Conductor
Installation Please follow the following guideline for cabling if you use aluminum cables. Guideline for aluminum conductor : - The oxide layer must be removed from the surface of the stripped aluminum conductor. - The stripped aluminum conductor is greased with Vaseline or contact grease with comparable properties after oxide layer removed. -
Page 41: Dc Wiring Installation For 122 Models
Installation 3.4.3 DC Wiring Installation for 122 models Please read the following instructions for connecting DC terminals (122 models): • It is important to choose the proper size for DC cable. • The cross-sectional area for each internal cable is 12~10 AWG (4~6mm²). DC wiring polarities are divided into positive and negative, which is shown in Figure 3-17. -
Page 42: Ground Bar Locations For 120/121 Models
Installation 3.4.4 Ground bar locations for 120/121 models Figure 3-18 shows the AC/DC grounding bar locations for the 120/121 models. The wire gauge of the ground cable: 6AWG~4AWG Torque grounding cables to 26 lbf-in (3 N.m) -120 Model WB -121 Model WB Figure 3-18: Ground bar location for 120/121 models... -
Page 43: Dc Side Ground Bar For 122 Models
Installation 3.4.5 DC side ground bar for 122 models After installing the unit, locate the ground bar and associated screws in accessory bag. Be sure to orient the ground bar as shown in Figure 3-19. Torque the mounting screws to: 22 lbf-in (2.5 N.m) The busbar accommodates grounding conductors in the range of 6AWG~4AWG Torque grounding conductors to 26 lbf-in (3 N.m) ②... -
Page 44: Communication Module Connections
Installation 3.5 Communication Module Connections The communication module of M42/36/28U is shown in Figure 3-20. 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 12VDC source between VCC &... -
Page 45: Accessing The Communication Module
Installation 3.5.1 Accessing the Communication Module The communication module consists of an assembly with a PCB and a plastic carrier. It is located in a slot through the bottom of the wiring box chassis. It is accessed from the bottom exterior of the wiring box. The carrier is secured to the chassis by two self-retaining screws. -
Page 46: Connection
Installation 3.5.2 RS-485 Connection The pin definition for the RS-485 terminal block is shown in Table 3-1. - Pins 1 and 2 provide a 12DC bus for use with accessories such as R3 Power Monitor. - Pins 3 and 5 are both connected to the DATA+ input. - Pins 4 and 6 are both connected to the DATA- input. -
Page 47: Figure 3-22: Multiinverter Connection Illustration
Installation Terminal Resistor (Last inverter in chain must have Switch 2 in ON position.) Data Format: Baud rate: 19200 RS485/USB Data bits: 8 Stop bit: 1 RS485/RS232 Parity: N/A Figure 3-22: Multiinverter connection illustration Switch 1 Terminal Resistor ON Terminal Resistor OFF Table 3-2: Terminal resister setting... -
Page 48: Epo Function & Digital Input
Installation 3.5.3 EPO Function & Digital Input The communication Module has an emergency power off function (EPO), and EPO enable can be found in the Install Settings page. Figure 3-23: EPO function terminal block Once enabled, the EPO function can be used to turn off the inverter via a NO relay contact connected across terminal [V1 &... -
Page 49: Dry Contact Connection
Installation 3.5.4 Dry Contact connection The M42/36/28U series provides a dry control contact pair that may be used to control external devices based on the status of operation of the inverter. The terminal block for this function is shown in Figure 3-24. The terminals marked in the figure identify the dry contact connection. -
Page 50: On-Site Insulation Test
Installation 3.6 On-site insulation test For customers who want to do on-site insulation test, please make sure: 1. The DC switches are in “OFF” position. 2. Apply one probe to the positions shown in Figure 3-25, the other to the ground. It might cause damages to the inverter if probes are applied to inappropriate positions. -
Page 51: 4 Commissioning
Commissioning 4 Commissioning CAUTION: HOT SURFACES, DO NOT TOUCH! - Be careful of hot surfaces when operating the product! - Do not perform any task until the unit cools down or appropriate personal protection gear is worn. 4.1 Display Operation Introduction M42/36/28U series include a front panel 4x20 character LCD display which includes four programming keys and 2 LEDs (located on the left-hand side of the LCD) that allow visual display of the inverter’s data and status as shown in... - Page 52 Commissioning Condition Green LED Red LED Countdown FLASH * Power ON Error or Fault Standby or Night time (No DC) Bootloader mode FLASH * * ON 1s / OFF 1s Table 4-1: LED indicator Button Symbol Action Enter Enter a Menu or Confirm a programmed value ▲...
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Page 53: First Startup
IEEE1547 480V IEEE1547 480V Français IEEE1547.A 480V ► Yes / EXIT EXIT When setting is Are you sure to ► Delta prot. IEEE1547 set protocol : Sunspec prot. Delta prot. ► Yes / EXIT EXIT EXIT Are you sure to set... -
Page 54: Home Page
Commissioning 4.2.1 Home Page After completion of First Start and inverter is in normal operation, the LCD will display the homepage screen as shown in Figure 4-3. The user can view information to include output power, inverter status, E-today, date and time. Pressing "any"... -
Page 55: Power Meter
Commissioning 4.3.1 Power meter This page displays voltage, current and power measurements from both the AC and DC side. 4.3.2 String monitoring (120&122 models) The string current monitoring function is accessed via the Power Meter menu Four sub-pages are accessed using display keys as shown in Figure 4-4, two pages display string current values for the nine strings of MPPT1 and MPPT2. -
Page 56: Energy Log
Commissioning 4.3.3 Energy Log User can view the inverter’s lifetime energy runtime via Energy Log page. Life Energy Life Energy: ► Day Energy E-Total: 30680.02 kWh Month Energy Runtime: 7302 Hrs EXIT Day Energy: Life Energy ► Day Energy 2016.10.10 147 kWh 2016.10.09 146 kWh... -
Page 57: Inverter Information
Commissioning 4.3.5 Inverter Information This page allows the user to view static data associated with the inverter to include serial number, installation date, inverter ID (RS-485 address), and firmware version. Additional parameters are accessed via connected menus using the up/dn keys. Programmed settings (e.g., Inverter ID, baud rate) are adjusted using the settings menu. -
Page 58: Install Settings
To enter Install Settings page, users must enter a valid password, which must be obtained from Delta Electronics. There are three sets of password with different permissions: User Level, Installer Level, and Manufacturer Level. The following sub-sections will introduce the parameters settings accessible from the User and Installer level menus of the Install Settings page. -
Page 59: Inverter Id
Commissioning 4.3.7.1 Inverter ID Inverter ID is the RS-485 address which is assigned to the inverter and used when the RS-485 communication system is operating, e.g., connected to a PC or data logger. If several inverters are connected to the RS-485 bus, each must have a distinct Inverter ID. -
Page 60: Grid Settings
Commissioning 4.3.7.4 Grid Settings This menu item allows the installer or an engineer to enable and/or adjust specific "smart inverter" (aka, CA Rule 21 or HECO functionality) grid parameters to include low/high voltage ride-through(L/HVRT), low/high frequency ride-through (L/HFRT), Soft start and ramp rates. Refer to Figure 4-13. Further details of this functionality is provided in Appendix A and B. -
Page 61: Dry Contact Set-Up
Commissioning 4.3.7.5 Dry Contact Set-up System provide a dry contact to allow users to create a hardwired control, Users can choose the trigger condition of the dry contact. There are 8 options in the settings page: Disable, On Grid, Fan Fail, Insulation, Alarm, Error, Fault, and Warning. Please refer to Table 4-5 for more details about these options. -
Page 62: Potential Induced Degradation
Commissioning 4.3.7.6 Potential Induced Degradation PID (Potential Induced Degradation) is a phenomenon which puts a high level negative voltage on PV module and make PV module performance low. The default action time of PID is set with 0(it means disable PID function), user can set the time from 0-10 Hours or Auto. -
Page 63: Ac Connection
Delta anti-islanding function is based on the Sandia Frequency Shift algorithm. The default setting depends on grid code (always ON in NA). -
Page 64: Grid Code Confirm
Commissioning 4.3.7.12 Grid code confirm User can confirm grid code parameters as following, such as voltage and frequency protection parameters. More detail of F/VRT will be show in appendix.(For HECO and Rule 21). Meter Country: Energy Log HECO A Event Log Insulation: 100k Ω... -
Page 65: Active / Reactive Power
Commissioning 4.3.8 Active / Reactive power A password is required to enter Active / Reactive Power page. This page includes two kinds of function: active power control and reactive power control. In active power control function, there are 3 control modes: Power Limit, Power vs. -
Page 66: P(V)
Commissioning Gradient ( Hz ) start = recovery protection Figure 4-24: Power vs Frequency parameter 4.3.8.3 P(V) When grid voltage rises up to a lock-in voltage(V lock-in) and inverter’s present output power is greater than lock-in power(P lock-in), inverter will reduce the output power and keep it at a certain value(P lock-out) until grid voltage drop back to lock-out voltage(V lock-out) and passing a certain time(T recovery). -
Page 67: Constant Cosphi
Commissioning 4.3.8.4 Constant cosphi Inverter can feed in a fixed reactive power to grid. Users can set the power factor(cosphi) in Constant cosphi page. ► Constant cosphi Mode ► Cosphi (P) cosphi Ind 1.00 Constant Q Q(V) EXIT Figure 4-26: Constant cosphi screens 4.3.8.5 Cosphi (P) Cosphi (P) is a function that inverter will feed in reactive power when its output active power reach the setting values. -
Page 68: Constant Q
Commissioning 4.3.8.6 Constant Q Like Constant cosphi function, users can assign a percentage of reactive power in Constant Q page. Constant cosphi Mode ► Cosphi (P) Fix Q Ind 90% ► Constant Q Q(V) EXIT Figure 4-29: Constant Q screens 4.3.8.7 Q(V) Q(V) is a control mode that inverter will provide reactive power according to grid voltage. -
Page 69: Frt (Fault Ride Through)
Commissioning i limit s limit Figure 4-31: Q(V) parameter 4.3.9 FRT (Fault ride through) Some area requests that inverter should keep connected to grid when grid voltage drops suddenly in few seconds. In these areas, users can enable FRT function and adjust the parameters to meet the requirement. General Settings Warning: ►... -
Page 70: 5 Maintenance
Maintenance 5 Maintenance Please check the unit regularly. If there are any impaired or loose parts, please contact your solar installer. Ensure that there are no fallen objects in the path of the heat outlet. WARNING ! - Prior to beginning any maintenance procedures switch AC and DC power off to avoid risk of electrical shock! 5.1 Removing and replacing the Wiring Box (WB) cover In order to guarantee proper long-term operation of the inverter, the following... -
Page 71: Removing The Wb Cover
Maintenance 5.1.1 Removing the WB cover • Never attempt to remove the WB cover in rainy damp weather without weather protection around the inverter. • Switch AC and DC power off and wait until LCD display turns off. • Loosen the 4 screws on the WB front cover and remove cover. •... -
Page 72: Replacement Of Surge Protection Devices (Spd)
Maintenance WARNING ! Insulator plate If it's necessary to remove the insulator plate of wiring box during Cabling or maintenance, the insulator plate must be put back in to the wiring box before re-install the cover, refer the figure right. 5.2 Replacement of Surge Protection Devices (SPD) M42/36/28U series models have the surge protection device (SPD) at both AC and DC side as shown in Figure 5-3. -
Page 73: Figure 5-4: Display Indicating Ac And Dc Spd Failure
Maintenance 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. The SPDs are located in the inverter wiring box (WB) on both AC and DC input terminals. -
Page 74: Figure 5-5: Location Of Spd Modules Inside Various Wb Versions
Maintenance • Accessing the Wiring Box 1. Switch AC and DC power off and wait until LCD display turns off. 2. To access the wiring box, use procedure found in Section 5.1.1 Do not leave the WB uncovered for long periods of time. •... -
Page 75: Figure 5-6: Remove Screws As Indicated Unplug Connectors
Maintenance DC SPDs AC SPDs Figure 5-6: Remove screws as indicated unplug connectors... -
Page 76: Replace Internal String Fuse
Maintenance 5.3 Replace Internal String Fuse M42/36/28U 120 and 122 models both have a wiring box provisioned with two independent internal string combiners, each associated with one of the two MPPT inputs. The combiners utilize standard 10 mm x 38 mm PV combiner fuses and associated fuse holders. -
Page 77: Figure 5-7: Fuse Holder Locations For 120/122 Models
Maintenance The fuse holders are mounted on two separate PWBs (one/MPPT). The pull-out fuse holders allow safe removal of fuses which are inserted into a carrier. Figure 5-7 shows the location of the combiner fuse holders, and Figure 5-8 provides details to remove a fuse from the 120/122 WB; refer to Figure 2-5 for additional information. -
Page 78: Figure 5-9: String Monitor
Maintenance Check the combiner fuses if the power generation of inverter is abnormal using the following procedure: 1. Check “Power meter/string monitoring” page on the LCD display, to determine if any string current measurement is zero, which will most probably indicate a blown fuse. -
Page 79: Smart Fans Replacement And Filter Cleaning
Maintenance 5.4 Smart Fans Replacement and Filter Cleaning M42/36/28U models are provisioned with processor-controlled "smart fans" for cooling of the electronics. This section provides procedures for cleaning filters associated with these fans, and instructions for field replacement of the fans. The fans utilized have high reliability ratings and coupled with use of processor controls provide a "smart"... -
Page 80: Figure 5-11: Power Module Fan Tray
Periodic fan and filter cleaning is required to insure 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 6 months - For very dusty locations, it may be necessary to clean the fans and filters quarterly or monthly. -
Page 81: Power Module (Pm) Fan Tray
Maintenance 5.4.1 Power Module (PM) Fan Tray 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 power module. The PM electronics are isolated, and heat is transferred to the plenum airflow via a large heatsink. -
Page 82: Figure 5-12: Disassembling Fan Tray From Pm Chassis (Showing One Side Only)
Maintenance ① * Screw torque required for assembling: 7 lbf-in (0.8N.m) ② * Screw torque required for assembling: 7 lbf-in (0.8N.m) ③ * Screw torque required for assembling: 7 lbf-in (0.8N.m) Figure 5-12: Disassembling fan tray from PM chassis (showing one side only) -
Page 83: Procedures To Remove Pm Air Inlet Filter
Maintenance 5.4.1.2 Procedures to remove PM air inlet filter Refer to Figure 5-13. Filter can be removed from either side of PM: 1. Unlatch the retaining hook and grasp the filter handle. 2. Carefully pull the filter frame straight out keeping it perpendicular to the side of the PM chassis. -
Page 84: De-Commissioning
Maintenance 5.5 De-Commissioning When necessary to remove the inverter from active operation for maintenance or replacement, follow the instructions below. DANGER : ELECTRICAL HARZARD!! To avoid serious injury, use follow the procedure - Switch off internal AC switch and then both DC switches to cease inverter operation - Switch off external AC circuit breaker or switch to disconnect the electrical grid from the inverter chassis - Remove array DC from chassis requires opening string level MC4 connectors in order... - Page 85 Maintenance CAUTION: HOT SURFACES, DO NOT TOUCH ! - Use care not to touch hot surfaces if the inverter is just shutting down. - Do not perform any task until the product cool down sufficiently. CAUTION: POSSIBILE INJURY ! The inverter weighs more than 84 kg (185 lb). There is risk of injury if the inverter is carried incorrectly or dropped during transport or when attaching or removing it from the wall mounting bracket.
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Page 86: 6 Error Message And Trouble Shooting
If fault continues to appear or if it is listed more than once in the inverter Error log, it may be necessary to call Delta Technical Service Hot Line. A service call checklist with necessary information for a call to the hotline is provided at the end of the Troubleshooting guide. -
Page 87: Warning Codes
Error message and Trouble Shooting Table 6-1B: Error Codes and Messages Message Possible cause Action 1. Modify the solar array setting, and Solar2 1. MPPT 2 input voltage is over make the Voc less than 1000Vdc High 1000Vdc 2. Contact customer service for (E31) 2. -
Page 88: Fault Codes
Error message and Trouble Shooting 6.3 Fault Codes Table 6-3A: Fault Codes & Messages Message Possible cause Action 1. Check the utility waveform. Grid connection of inverter need to be Injection 1. Utility waveform is abnormal far away from non-linear load if necessary (F01, F02, 2. - Page 89 Error message and Trouble Shooting Table 6-3B: Fault Codes & Messages Message Possible cause Action 1. Check the input voltage, must >150Vdc 1. Insufficient input power HW DSP 2. Check the auxiliary circuitry inside the 2. Auxiliary power circuitry ADC2 inverter malfunction (F16)
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Page 90: Table 6-3C: Fault Codes & Messages
Error message and Trouble Shooting Table 6-3C: Fault Codes & Messages Message Possible cause Action 1. Power line is disconnected 1. Check the power lines inside the inverter HW Con. Fail inside the inverter 2. Contact customer service for (F26) 2. -
Page 91: Table 6-3D: Fault Codes & Messages
Error message and Trouble Shooting Table 6-3D: Fault Codes & Messages Message Possible cause Action 1. Test current loop is broken HW CT B Fail Contact customer service for technical 2. CTP4 is defective support (F43) 3. Detection circuit malfunction 1. -
Page 92: Calling For Help
In order for Delta Hotline personnel to efficiently handle your service request, certain information must be made availble to the service technician. Prior to calling the Delta Service Hotline, the information listed below must be assembled: 6.4.1 Service Call Checklist 1. -
Page 93: 7 Technical Data
Technical Data 7 Technical Data 7.1 Technical of M42U series M42U M42U M42U _120 _121 _122 DC Input Maximum input voltage 1100V* (1000V MAX for NEC) Operating voltage range 200 - 1000 V Start voltage >250 V range for P 545 - 830 V... -
Page 94: Technical Of M36U Series
Technical Data 7.2 Technical of M36U series M36U M36U M36U _120 _121 _122 DC Input Maximum input voltage 1100V* (1000V MAX for NEC) Operating voltage range 200 - 1000 V Start voltage >250 V range for P 520 - 830 V OUT-RATED Rated voltage 710 V... -
Page 95: Technical Of M28U Series
Technical Data 7.3 Technical of M28U series M28U M28U M28U _120 _121 _122 DC Input Maximum input voltage 1100V* (1000V MAX for NEC) Operating voltage range 200 - 1000 V Start voltage >250 V range for P 485 - 830 V OUT-RATED Rated voltage 710 V... -
Page 96: Communications
Technical Data 7.4 Communications Communications Comm port | Protocol RS-485 | Delta or Sunspec 20 x4 line LCD Display 7.5 Certifications Certifications Safety UL1741 SA UL1741, UL1998, UL1699B, CSA C22.2, FCC Pt.15 (Class B) IEEE1547, IEEE 1547.1 Interconnection 7.6 Smart Inverter Functionality... -
Page 97: Figure 7-1: Thermal Derating Curve Of M42U
P/P* P*=42kW 115 % 110 % 105 % 100 % 95 % 90 % 85 % 80 % 545V 710V 75 % 830V 70 % 65 % 60 % 55 % 50 % Figure 7-1: Thermal Derating curve of M42U... -
Page 98: Figure 7-2: Thermal Derating Curve Of M36U
Technical Data Temperature Derating of M36U P/P* P*=36kW 115 % 110 % 105 % 100 % 95 % 90 % 85 % 80 % 520V 710V 75 % 830V 70 % 65 % 60 % 55 % 50 % Figure 7-2: Thermal Derating curve of M36U... -
Page 99: Figure 7-3: Thermal Derating Curve Of M28U
Technical Data Temperature Derating of M28U P/P* P*=28kW 115 % 110 % 105 % 100 % 95 % 90 % 85 % 80 % 485V 710V 75 % 830V 70 % 65 % 60 % 55 % 50 % Figure 7-3: Thermal Derating curve of M28U... -
Page 100: Appendix: Grid Support Utility Interactive Inverters
Appendix A: Rule 21 APPENDIX: Grid Support Utility Interactive Inverters The inverter has pre-programmed control presets intended for use in specific geographic areas. They include: • Rule 21 – Preset all required controls to meet the F/VRT specifications that satisfy CA Power Tariff Rule 21 •... -
Page 101: Appendix A-3: Ca R21 Settings – Normal Ramp Rate (Rr) & Soft-Start Ramp Rate (Ss)
Appendix A: Rule 21 Appendix A-3: CA R21 Settings – Normal Ramp Rate (RR) Alias M42U M36U M28U & Soft-Start Ramp Rate (SS) Irated 50.5A 33.7A a) Output Current Rating (A) 43.3A b) Minimum normal ramp-up rate (%Irated /sec) RRnorm_up_min 1.11%/sec... -
Page 102: Appendix A-6: Ca R21 Settings – Volt/Var Mode (Q(V))
Appendix A: Rule 21 Appendix A-6: CA R21 Settings – Volt/VAr Mode (Q(V)) Alias M42U M36U M28U a) Apparent Power Rating (VA) Srated 46000VA 39600VA 30800VA b) Output Power Rating (W) Prated 42000W 36000W 28000W c) EUT Input voltage range with function enabled (V) -
Page 103: Appendix A-8: Ca R21 Settings – Volt-Watt (Vw)
Appendix A: Rule 21 Alias Appendix A-8: CA R21 Settings – Volt-Watt (VW) M42U M36U M28U Prated a) Output Power Rating (W) 46000VA 39600VA 30800VA [Vmin, Vmax] b) AC voltage range with function enabled (V) [249.3V, 304.7V] Vnom c) Nominal AC voltage (V) -
Page 104: Appendix B: Heco
Appendix B: HECO Appendix B: HECO Appendix B-1: Full Frequency Ride-Through Settings for O’ahu, Hawai’i Island, and Maui (HECO A) System Frequency Minimum Range Ride-Through Maximum Trip Operating Region Operating Mode Default Settings (Hz) of Adjustability Until Time Over-Frequency 2 Permissive Operation No Ride f >... - Page 105 Appendix B: HECO Meter ountry: Ener Event Lo Insulation: 19200 ► Inverter Info . Baud Rate: EXIT O2X16100005W0 3P4W S/N: onnection: 2016 46000W Install: Max . Power: INV I ont A: isable ont B: isable Version Normal Grid Settin ► Active Pwr Settin React Pwr Settin Figure B-1: Procedure to confirm Grid Code via LCD –...
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Page 106: Figure B-3: Details Of Heco A & B: L/H Vrt Via Lcd Settings Menu
Appendix B: HECO ► Volta e Prote tion . Prote tion onne 6000 P Ram EXIT 332.4 Trip value of OVR2 304.7 Hysteresis voltage of OVR2 0.1S Trip time of OVR2 138.5 Trip value of UVR3 243.7 Hysteresis voltage of UVR3 0.3S Trip time of UVR3 310.2... -
Page 107: Appendix C: Assembly Note
Appendix C: Assembly Note Appendix C: Assembly Note -All Model ① ③ Location Screw torque Filter 7 lbf-in (0.8N.m) Screw assemblies 7 lbf-in (0.8N.m) 7 lbf-in (0.8N.m) Appendix C-1: Assembly Note for All model... - Page 108 Appendix C: Assembly Note -120 Model WB ⑧ ⑦ ⑧ ⑦ ⑨ ⑥ ② ① ⑩ ⑤ ⑪ ④ ③ Location Screw torque Conductor cross-section AC switch 24.0 lbf-in (2.8N.m) 6~4 AWG (14~22mm²) PE Terminal 31.0 lbf-in (3.5N.m) Communication cover 7.00 lbf-in (0.8N.m) Communication port 20 AWG (0.5mm²)
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Page 109: Appendix C-3: Assembly Note For 121 Model
Appendix C: Assembly Note -121 Model WB ⑧ ⑦ ⑧ ⑦ ⑨ ⑥ ② ① ⑩ ⑪ ⑤ ④ ③ NO Location Screw torque Conductor cross-section AC switch 24.0 lbf-in (2.8N.m) 6~4 AWG (14~22mm²) PE Terminal 31.0 lbf-in (3.5N.m) 6~4 AWG (14~22mm²) Communication cover 7.00 lbf-in (0.8N.m) Communication port... -
Page 110: Appendix C-4: Assembly Note For 122 Model
Appendix C: Assembly Note -122 Model WB ⑧ ⑦ ⑧ ⑦ ⑨ ⑥ ② ① ⑤ ③ ⑪ ⑪ ⑩ PV-KBT 4/6 Ⅱ ④ ⑫ ⑪ PV-KST 4/6 Ⅱ Location Screw torque Conductor cross-section AC switch 24.0 lbf-in (2.8N.m) 6~4 AWG (14~22mm²) PE Terminal 31.0 lbf-in (3.5N.m) Communication cover... - Page 112 Delta Products Corporation 15700 Don Julian Road City of Industry, CA 91745 Sales Email: sales.usa@solar-inverter.com Support Email: support.usa@solar-inverter.com Sales Hotline: 1-877-440-5851 or 1-626-369-8021 Fax: 1-626-709-5896 Support Hotline: 1-877-442-4832 5013246605 Support (Intl.) : 1.626.369.8019 Version 09180912 Mondays to Fridays from 8:30 am to 5 pm (apart from Holidays)
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