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PVI 23TL
PVI 28TL
INSTALLATION AND OPERATION MANUAL
Revision J
[Generation III (SN Prefixes 101301 and 101302)]
© 2017, Yaskawa – Solectria Solar

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Summary of Contents for YASKAWA PVI 23 TL

  • Page 1 PVI 23TL PVI 28TL INSTALLATION AND OPERATION MANUAL Revision J [Generation III (SN Prefixes 101301 and 101302)] © 2017, Yaskawa – Solectria Solar...
  • Page 2 PVI 23-28TL Installation and Operation Manual (Rev J) IMPORTANT REGISTRATION AND WARRANTY INFORMATION For warranty to become active, this inverter must be registered. To activate warranty and register inverter, please visit the link below. www.solectria.com/registration DOCR-070365-J Page 2 of 66...
  • Page 3 PVI 23TL, 28TL Installation and Operation Manual (Rev J) IMPORTANT SAFETY INSTRUCTIONS In this manual, “inverter” or “inverters” refers to the inverter models: PVI 23TL and PVI 28TL, unless one of the specific models is noted. This manual contains important instructions that shall be followed during installation and maintenance of the inverter.
  • Page 4 PVI 23TL, 28TL Installation and Operation Manual (Rev J) IMPORTANT SAFETY INSTRUCTIONS  All electrical installations shall be performed in accordance with all applicable local, American, or Canadian electrical codes.  The inverter contains no user-serviceable parts. Please contact Solectria Renewables or a Solectria Renewables authorized system installer for maintenance.
  • Page 5 PVI 23TL, 28TL Installation and Operation Manual (Rev J)  (noir) avant de procéder au câblage. Les capteurs PV exposés a la lumière produisent du courant électrique susceptible de créer une situation de risque. CONSERVEZ CES INSTRUCTIONS DOCR-070365-J Page 5 of 66...
  • Page 6: Table Of Contents

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) Table of Contents Introduction ...........................7 PVI 23-28TL Inverter Enclosure ....................9 PVI 23-28TL Inverter Main Parts and Accessories ..............10 Site Preparation and Inverter Placement ................12 Criteria for Device Mounting ....................12 Inverter Mounting ........................
  • Page 7 PVI 23TL, 28TL Installation and Operation Manual (Rev J) 11.1 Check the Electrical Connection ....................55 11.2 Clean the Air Vent Filter ......................55 12.0 Product Warranty and RMA Policy ..................56 12.1 Warranty and Registration ......................56 13.0 Technical Data ........................56 13.1 Output AC Specifications ......................
  • Page 8: Introduction

    PVI 23-28TL Installation and Operation Manual (Rev J) 1.0 Introduction The PVI 23TL and 28TL are commercial, dual MPPT, three-phase utility-interactive, transformerless PV inverters designed to be interconnected to the electric utility grid. The inverter is listed for use with ungrounded PV arrays only. By following this manual, the inverter can be installed and operated safely.
  • Page 9 PVI 23TL, 28TL Installation and Operation Manual (Rev J) Feeding power back to the grid involves the conversion of DC voltage from the PV array to grid compatible AC voltage by inverting DC to AC. This unit feeds power into a standard, three-phase commercial, industrial, institutional, or electrical utility facility’s electrical system which is connected to the electrical grid.
  • Page 10: Pvi 23-28Tl Inverter Enclosure

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) PVI 23-28TL Inverter Enclosure ① Inverter Main Housing Does not contain any serviceable parts; opening this section voids the inverter warranty. ② Wiring Box For customer’s AC and DC wire connections. ③...
  • Page 11: Pvi 23-28Tl Inverter Main Parts And Accessories

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) PVI 23-28TL Inverter Main Parts and Accessories Every PVI 23-28TL inverter comes equiped with the following: Item Quantity Description Inverter Main Housing The upper section of the inverter. It contains no serviceable parts and the opening of this section voids the inverter warranty.
  • Page 12 PVI 23TL, 28TL Installation and Operation Manual (Rev J) DC DISCONNECT Figure 1.3 – PVI 23-28TL Inverter Dimensions DOCR-070365-J Page 11 of 66...
  • Page 13: Site Preparation And Inverter Placement

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 2.0 Site Preparation and Inverter Placement The inverter is comprised of a NEMA 4 enclosure, containing electrical and electronic components as well as AC and DC integrated disconnects. NOTE: If the inverter is mounted outside, ensure that the wiring box remains closed during the installation process until access to the box is needed.
  • Page 14 PVI 23TL, 28TL Installation and Operation Manual (Rev J)  The ambient temperature must be between -25°C and +45°C for full power and continuous operation. The inverter will automatically reduce power or may shut down to protect itself if ambient air temperature is outside the normal operating range. ...
  • Page 15: Inverter Mounting

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 3.0 Inverter Mounting WARNING: Any lifting or moving of the inverter requires at least two people. Lifting of the crate/pallet requires at least three people. Checking for Shipping Damage The inverter is thoroughly checked and tested rigorously before it is shipped. Although the shipping container is adequately designed to protect the inverter during shipment, the product may be damaged by poor handling, trucking, or transfer station activity.
  • Page 16: Inverter Positioning And Mounting

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) Inverter Positioning and Mounting The Inverter can be mounted vertically or with a 15°-90° horizontal angle, as shown in Figure 3.1a and 31 b below. The shade cover option must be purchased and installed for any installation angles of 75°...
  • Page 17 PVI 23TL, 28TL Installation and Operation Manual (Rev J) 3.3.1 Wall Mounting The minimum distances that should be met for wall mounting are shown in Figure 3.2 below.  For adequate cooling, there should be a minimum of ≥ 20 inches of space available between two adjacently mounted inverters.
  • Page 18 PVI 23TL, 28TL Installation and Operation Manual (Rev J) 3.3.2 Wall Mounting/Mounting Bracket Clearance Figure 3.3 – Wall Mounting Clearance Requirements of Mounting Bracket 3.3.3 Pillar Mounting The minimum inverter mounting dimensions on a pillar are shown in Figure 3.4 below. 7.9in ¡...
  • Page 19: Installing The Mounting Bracket

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) Installing the Mounting Bracket NOTE: Always use all (8) mounting plate fasteners. 1. Mark the 8 holes on the load-bearing surface using the available mounting bracket as a template (see Figure 3.5). 2.
  • Page 20 PVI 23TL, 28TL Installation and Operation Manual (Rev J) 6. Using a #2 Philips screw driver, remove cover plate on the bottom of main housing. Figure 3.7 – Remove Cover Plate of Main Housing 7. Using a #2 Philips screw driver, remove cover of wiring box and keep the cover (it re-secured later...
  • Page 21 PVI 23TL, 28TL Installation and Operation Manual (Rev J) 9. Connect the main housing and wiring box to the mounting bracket using a #2 Philips screwdriver and six M5*10 bolts (available in accessory box). Torque = 14in-lbs Figure 3.10 – Fasten the Main Housing and Wiring Box onto the Bracket 10.
  • Page 22: Grounding Connections

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 4.0 Grounding Connections WARNING: All electrical installations must be performed in accordance with any applicable local electrical codes, and must be done by electrically qualified personnel. AC and DC grounding connections should only be made directly to the terminals within the wiring box.
  • Page 23: Dc/Ac Grounding

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) Removing/Replacing the Wire Box Cover: (1) Use a #3 Phillips screwdriver to remove the 4 screws on the wiring box and pull cover straight off the box. Do not twist or slide the cover while removing.
  • Page 24: Dc Connections From The Pv Array

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) NOTE: The lug for the stud is located in the accessory box. WARNING: Install grounding conductors per local codes and standards. Figure 4.4 – AC Ground Wiring Connection 5.0 DC Connections from the PV Array WARNING: All wiring connections at the inverter must be performed with the building AC source circuit panel/breaker off and the PV module strings disconnected.
  • Page 25: Dc Wiring

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) WARNING: Fuses in the inverter must only be replaced with the same type and rated fuses as originally installed. WARNING: The terminal is rated only for CU wire; using AL wire directly at the terminal will void the warranty.
  • Page 26 PVI 23TL, 28TL Installation and Operation Manual (Rev J) Gen I Gen II (1) PVI 23TL SN:1159 (1) PVI 23TL SN:1223 (2) PVI 28TL SN:1160 (2) PVI 28TL SN:1224 Gen III (1) PVI 23TL SN:101301 (2) PVI 28TL SN:101302 Figure 5.1 – Wiring Box Design Change Conductors Max.
  • Page 27: Dual Maximum Power Point Tracking

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) Option 1 Input* One Input that Bypasses 2AWG Fuse Bypass- Fuse Fuse Bypass Fuse Holder and uses 50in-lbs option Bypass Option Combined MPPT Zones *Consider combining MPPT zones for such configuration. Table 5.1 –...
  • Page 28 PVI 23TL, 28TL Installation and Operation Manual (Rev J) IN1+ PV1+ Inv 2+ PV2 + Inverter Inv 1- PV1- IN2- PV2- Figure 5.3 – Two MPPTs Operating Independently WARNING: Strings must be balanced for optimum performance and AC output. When calculating DC/AC ratio sizing, perform calculations on the zone level unless you intend to combine MPPTs.
  • Page 29: Fuse Bypass Opt-Fusebypass-Pvi-23-28

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) Figure 5.4 – Busbar Connection Used for Single (Combined) MPPT Option Removed 4. Set the S401 switch to Independent (IND) mode. Figure 5.5 – Switch Configuration for Two Individual (Dual) MPPT Zones NOTE: The S401 switch is located under the “Enter”...
  • Page 30 PVI 23TL, 28TL Installation and Operation Manual (Rev J) S401 Inputs/MPPT Proper Wiring Wire Switch Zones 2 Inputs -2 Independent MPPT Zones 1 Input 2AWG 1 Combined MPPT Zone Table 5.2 – Internal String Combiner Bypass Option DOCR-070365-J Page 29 of 66...
  • Page 31: Ac Connections At The Inverter

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 6.0 AC Connections at the Inverter Both PVI 23TL and PVI 28TL 3-phase AC wiring is recommended to be installed with five conductors, one per phase along with a neutral and an AC equipment ground as per local requirements.
  • Page 32: Ac Interconnections To Grid

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) AC Interconnections to Grid Description Configuration Inverter Compatibility 4 Wire WYE (3 phase + Compatible with 23TL Neutral +GND) Compatible with 28TL Other All other configurations not mentioned in this Not compatible with 23TL Configurations document, such as Corner Grounded Delta Not compatible with 28TL...
  • Page 33: Communication Connections

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 7.0 Communication Connections The PVI 23-28TL inverters support industry standard Modbus RS-485 communications. S401 S403 S402 Figure 7.1 - Communication/LCD and Component Locations Inside the Wiring Box DOCR-070365-J Page 32 of 66...
  • Page 34 PVI 23TL, 28TL Installation and Operation Manual (Rev J) Table 7.1 - Communication Connections and Configuration Switches Item Picture Configuration description P205 - Dry Contact Communication Port (3 Pin Connector) Please see section 7.3 Dry contact communication for more details. N.O.
  • Page 35: Modbus (Rs-485) Network Connections With External Monitoring Systems

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 7.1 Modbus (RS-485) Network Connections with External Monitoring Systems The PVI 23-28TL inverter can be connected to an external Data Acquisition System (DAS) via Modbus (RS- 485) connection as shown in figure 7.2. Figure 7.2 - PVI 23-28TL Inverters in a Modbus (RS-485) Daisy Chain Connected to an External ...
  • Page 36 PVI 23TL, 28TL Installation and Operation Manual (Rev J)  Star or T Modbus (RS-485) network topologies should always be avoided. See Figure 7.3. Figure 7.3 It is important to daisy chain the inverter Modbus (RS-485) connections to minimize noise and bus reflections.
  • Page 37 PVI 23TL, 28TL Installation and Operation Manual (Rev J) 4. If the inverter is the last Modbus device in the daisy chain, make sure the Modbus termination switch S402 is in the ON position (Up towards the LCD) enabling Modbus termination. Do not turn the switch to the ON position in any other inverters in the daisy chain.
  • Page 38 PVI 23TL, 28TL Installation and Operation Manual (Rev J) Figure 7.5 The above image shows the Modbus (RS-485) cable connection where the Modbus daisy chain ends. Notice how the cable shield is not landed inside the inverter. The Modbus termination switch (S402) is in the on position.
  • Page 39 PVI 23TL, 28TL Installation and Operation Manual (Rev J) Figure 7.6 Notice how the cable shield is daisy chained together and not landed inside the inverter. S402 is in the OFF position, or down towards the Phoenix connector when the inverter is in the middle of the daisy chain.
  • Page 40: Connecting Tl Inverters Using Solrenview Monitoring Option

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) Connecting TL Inverters using SolrenView Monitoring Option Solectria offers SolrenView monitoring as an option for the PVI 23-28TL inverters. In Gen III PVI 23-28TL inverters, SolrenView hardware is no longer an integrated option, only external. This option (SRV-LCD-3PTL-OUTDOOR) includes the SolrenView data logger which comes in an outdoor rated enclosure.
  • Page 41: Dry Contact Communication

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 7.3 Dry Contact Communication The inverter features an alarm function that opens or closes a dry contact on the communication board. (available both as contact normally open – N.O. – and as contact normally closed –...
  • Page 42 PVI 23TL, 28TL Installation and Operation Manual (Rev J) Connection Plan: You can connect a LED or other loads to indicate the operational status of the inverter, as shown in the following figure: (or L (or L Line circuit Breaker( 3 A) Line circuit Breaker( 3 A) N.C.
  • Page 43 PVI 23TL, 28TL Installation and Operation Manual (Rev J) Tool: Wire stripping pliers Figure 7.11 - Wire Stripping Table 7.4 Cable Set-Up Position Description Value Double-layer Cable type insulated cable Outer diameter 4.5 mm~ 6 mm Cross-section area of 0.2 mm² ~ 0.75 mm² conductor Length of stripped Maximum 15mm...
  • Page 44 PVI 23TL, 28TL Installation and Operation Manual (Rev J) Plug the cable terminal into the P205 connector. Figure 7.13 - Dry Contact Communication Cable Connection DOCR-070365-J Page 43 of 66...
  • Page 45: Commissioning The Inverter Pv System

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 8.0 Commissioning the Inverter PV System Before commissioning, ensure that the inverter is mounted, all connections are made, and the inverter is ready to power up. NOTE: Make sure all tools, parts, etc., are removed from the vicinity of the inverter before turning it on.
  • Page 46: Lcd And Led Indicators

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 9.0 LCD and LED Indicators The inverter operates automatically without the need for user interaction. The LCD and LED indicators on the front of the inverter provide valuable operating information. POWER GRID FAULT Figure 9.1 –...
  • Page 47 PVI 23TL, 28TL Installation and Operation Manual (Rev J) The LEDs on the left indicate the operational status of the inverter. LED Light Status Indication Troubleshooting DC voltage available at the Light on No need, Standard Operation inverter Power 1. Check DC input polarity is correct. Low DC or possible power Light off 2.
  • Page 48: Screen Descriptions

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) Screen Descriptions 9.2.1 Main Screen (Default) Press ESC to move from the Main (Default) screen into the Start Menu. 9.2.2 Start Menu 1. Operation Info 2. Alarm 3. History 4. Settings 5.
  • Page 49 PVI 23TL, 28TL Installation and Operation Manual (Rev J) 9.2.4 Alarm Menu The Alarm Menu displays inverter alarms and faults, some of which may be modified with the keypad. Use the buttons to scroll up and down through the list. Pressing will take the screen back to the Start Menu.
  • Page 50 PVI 23TL, 28TL Installation and Operation Manual (Rev J) 9.2.6 Settings Menu The inverter parameters can be adjusted by using commands in the Settings Menu as shown in Figure 9.7 below. Options such as Power ON/OFF, Language, Sounds, Date, Communications, and MPPT can simply be changed/set from the Settings Menu.
  • Page 51 PVI 23TL, 28TL Installation and Operation Manual (Rev J) 9.2.7 Power Dispatch “ActivePower” and “PowerFactor” parameters can be set up through the LCD as well as remotely. NOTE: These parameters are only adjustable with permission from the local utility. ActivePower(%) 100.0 5 Dispatch PowerFactor...
  • Page 52: Troubleshooting And Inverter Messages

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 10.0 Troubleshooting and Inverter Messages Although the inverter is designed for many years of power production, there may be instances where error messages are displayed on the LCD. This table can be used to help identify the error and resolve it.
  • Page 53 PVI 23TL, 28TL Installation and Operation Manual (Rev J) 4. Switch the Inverter 2. Fan service life has back on. ended. 5. If error does not clear, contact Solectria 3. Fan socket Customer Service. connecter is making a poor connection. 1.
  • Page 54 PVI 23TL, 28TL Installation and Operation Manual (Rev J) 1. Observe for 10min and 1. Grid frequency is see whether the alarm is out of range. cleared automatically. Grid voltage 2. Verify grid frequency is Protection 4. GridF.OutLim frequency is within range.
  • Page 55 PVI 23TL, 28TL Installation and Operation Manual (Rev J) 1. One of the 1. Observe for 10min and inverter’s internal see whether the alarm is Internal 9. IntProtect protection features cleared automatically. Protection problem within 0010-0260 was triggered 2. If error does not clear, the inverter causing the inverter contact Solectria...
  • Page 56: Product Maintenance

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 11.0 Product Maintenance Regular maintenance helps extend product lifetime and performance. 11.1 Check the Electrical Connection Check all the cable connections once every 6 months, by performing the following steps: 1. Turn off inverter DC disconnect. 2.
  • Page 57: Product Warranty And Rma Policy

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 12.0 Product Warranty and RMA Policy The current warranty and RMA statement for the product is available online at http://www.solectria.com/support/documentation/warranty-information/grid-tied-inverter- warranty-letter/ . If you do not have access to the internet or to request a copy to be mailed to you, please contact our Technical Service department 978-683-9700 x 2.
  • Page 58: Input Dc (Pv) Specifications

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 13.2 Input DC (PV) Specifications PVI23TL PVI 28TL Units Absolute Maximum Input Voltage 1000 15.5 per MPPT 19 per MPPT Maximum PV Power (31) (38) 300-900 Operating Input Voltage 330VDC/300W Strike (Startup Voltage/Power) MPPT Input Voltage Range 480-800 500-800...
  • Page 59: Temperature Derating Curve

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 13.4 Temperature Derating Curve Figure 13.1 shows the standard power derating curve for a PVI 23-28TL inverter. The inverter operates at full power up to 45°C and derates linearly until 60°C where it shuts down to protect itself.
  • Page 60: Altitude Derating Curve

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 13.6 Altitude Derating Curve Po/Pn 100% 6562ft 13123ft (2000m) (4000m) Figure 13.3 – Derating at High Altitudes 13.7 Internal Circuit Diagram The basic power flow within the PVI 23-28TL series of inverters is below. Note that the GFDI circuit is not depicted.
  • Page 61: Accessory Options

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 14.0 Accessory Options The PVI 23-28TL comes with several options that allow the inverter to support a wide range of real life applications. 14.1 Fuse Bypass OPT-FUSEBYPASS-PVI-23-28, as discussed in Section 5.3, allows customers to combine the DC inputs outside the inverter and enter with only one or two combined inputs.
  • Page 62: Solrenview Monitoring

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) 14.2 SolrenView Monitoring SRV-LCD-3PTL-OUTDOOR, as discussed in Section 7.2, allows customers to purchase the only monitoring system that is designed to support PVI 23-28TL to the fullest. SolrenView can be placed next to the inverter. RS-485 and DC wires can be fed into SolrenView directly off of the inverter.
  • Page 63 PVI 23TL, 28TL Installation and Operation Manual (Rev J) 14.3.1 Installation instructions for OPT-SHADECOVER-PVI-23-28TL Install bottom bracket as shown. Screws M6x18- 4 pcs. Torque to 25 in-lbs. DOCR-070365-J Page 62 of 66...
  • Page 64: Ac & Dc Disconnect Covers

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) Install top bracket as shown. Nuts M10- 2 pcs. Torque to 50 in-lbs. in-lbs. Install shade cover as shown. Screws M6x18- 4 pcs. Torque to 25 in-lbs. Figure 14.4 – Inverter With Shade Cover Installed 14.4 AC &...
  • Page 65: Appendices

    15.0 Appendices Appendix A – PVI 23-28TL Datasheet https://solectria.com/support/documentation/inverter-datasheets/pvi-23tl-pvi-28tl-pvi-36tl- transformerless-3-ph-string-inverters-datasheet/ Appendix B – String Sizing Tool http://solectria.com/support/string-sizing-tool/ Appendix C – Contact Information Yaskawa – Solectria Solar 360 Merrimack Street Building 9, Floor 2 Lawrence, Massachusetts 01843 Tel: 978.683.9700 Fax: 978.683.9702 Sales/ general info: inverters@solectria.com...
  • Page 66: Appendix E - Ul 1741 / Ul 1699B/ Ieee 1547 / Csa 22.2#107.1 Authorization To Mark

    PVI 23TL, 28TL Installation and Operation Manual (Rev J) Appendix E – UL 1741 / UL 1699B/ IEEE 1547 / CSA 22.2#107.1 Authorization to Mark DOCR-070365-J Page 65 of 66...

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