Schneider Electric CL-60E, CL-60A User Manual

Conext™ CL-60 PV Inverter

Owner’s Guide

975-0768-01-01 Revision B

03-2017

CL-60E

CL-60A

http://solar.schneider-electric.com

Conext™ CL-60 PV Inverter

Owner’s Guide

http://solar.schneider-electric.com

Copyright © 2017 Schneider Electric. All Rights Reserved. All trademarks are owned by Schneider Electric Industries SAS or its affiliated companies. Other 3rd party trademarks are owned by their respective companies.

Exclusion for Documentation

UNLESS SPECIFICALLY AGREED TO IN WRITING, SELLER

(A) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION;

(B) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR EXPENSES, WHETHER SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK; AND

(C) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH, ALTHOUGH STEPS HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE TRANSLATION, THE ACCURACY CANNOT BE GUARANTEED. APPROVED CONTENT IS CONTAINED WITH THE ENGLISH LANGUAGE VERSION WHICH IS POSTED AT SOLAR.SCHNEIDER-ELECTRIC.COM.

Document Number: 975-0768-01-01

Revision: Revision B

Date: 03-2017

Product Part Numbers: PVSCL60A (CL-60A—North American version)

PVSCL60E (CL-60E—IEC version)

Contact Information: http://solar.schneider-electric.com

Please contact your local Schneider Electric Sales Representative or visit our website at:

http://solar.schneider-electric.com/tech-support/

About This Guide

Purpose

The purpose of this Owner’s Guide is to explain the procedures for operating, configuring, maintaining, and troubleshooting the Conext CL-60 PV Inverter.

Scope

The Guide provides safety guidelines and general information for installing and operating the Conext CL-60, as well as information about configuring, monitoring, and troubleshooting the unit. It does not include information on how to use other Schneider Electric and third-party products.

Audience

The Guide is intended for use by anyone who plans to design, construct, install, or operate a system involving the CL-60. The installation information in this guide is intended for qualified personnel. Qualified personnel have training, knowledge, and experience in:

•Installing electrical equipment and PV power systems (up to 1000 volts)

•Applying all applicable installation codes

•Analyzing and reducing the hazards involved in performing electrical work

•Selecting and using Personal Protective Equipment (PPE)

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About This Guide

Organization

This Guide is organized into:

Chapter 1, “Introduction”

Chapter 2, “Installation”

Chapter 3, “Electrical Connections”

Chapter 4, “Commissioning”

Chapter 5, “LCD Display Operation”

Chapter 6, “Troubleshooting”

Chapter 7, “Disconnecting, Dismantling, and Disposing the CL-60”

Chapter 8, “Specifications”

Abbreviations and Acronyms

	AFD	Arc Fault Detection device
	EMI	Electromagnetic Interference
	G	Ground (also referred as Protective Earth)
	GND
	HMI	Human-Machine Interface
	IGBT	Insulated Gate Bipolar Transistor
	LAN / WAN	Local Area Network / Wide Area Network
	LCD	Liquid Crystal Display (used for HMI displays)
	LED	Light Emitting Diode (used for indicator lights)
	NFPA	National Fire Protection Association
	PE	Protective Earth (also referred as Ground)
	PPE	Personal Protective Equipment
	PV	Photovoltaic (or Solar)
	SPD	Surge Protection Device

Related Information

You can find more information about Schneider Electric, as well as its products and services at http://solar.schneider-electric.com.

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Important Safety Instructions

READ AND SAVE THESE INSTRUCTIONS - DO NOT DISCARD

This document contains important safety instructions that must be followed during installation procedures (if applicable). Read and keep this Owner’s Guide for future reference.

Read these instructions carefully and look at the equipment (if applicable) to become familiar with the device before trying to install, operate, service or maintain it. The following special messages may appear throughout this bulletin or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure.

The addition of either symbol to a “Danger” or “Warning” safety label indicates that an electrical hazard exists which will result in personal injury if the instructions are not followed.

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

DANGER

DANGER indicates an imminently hazardous situation, which, if not avoided, will result in death or serious injury.

WARNING

WARNING indicates a potentially hazardous situation, which, if not avoided, can result in death or serious injury.

CAUTION

CAUTION indicates a potentially hazardous situation, which, if not avoided, can result in moderate or minor injury.

NOTICE

NOTICE indicates important information that you need to read carefully.

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Safety

Please Note

Electrical equipment must be installed, operated, serviced, and maintained only by qualified personnel. No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.

A qualified person is one who has skills and knowledge related to the construction, installation, and operation of electrical equipment and has received safety training to recognize and avoid the hazards involved.

Safety Information

1.Before using this product, read all instructions and cautionary markings on the unit and all appropriate sections of this manual.

2.Use of accessories not recommended or sold by the manufacturer may result in a risk of fire, electric shock, or injury to persons.

3.The manufacturer recommends that all wiring be done by a certified technician or electrician to ensure adherence to the local and national electrical codes applicable in your jurisdiction.

4.To avoid a risk of fire and electric shock, make sure that existing wiring is in good condition and that wire is not undersized. Do not operate the equipment with damaged or substandard wiring.

5.Do not operate the equipment if it has been damaged in any way.

6.Do not disassemble the Conext CL-60 except where noted for connecting wiring and cabling. See your warranty for instructions on obtaining service. Attempting to service the unit yourself may result in a risk of electrical shock or fire.

7.To reduce the risk of electrical shock, disconnect the power supply from the equipment before attempting installation, and any maintenance (including cleaning or working on any components connected to the equipment). Internal capacitors remain charged for ten minutes after all power is disconnected.

8.The equipment must be grounded. Use the protective grounding conductor provided with the AC input conductors.

9.This product is designed for outdoor use and is rated IP65 and Type 4X.

10.To reduce the chance of short-circuits, always use insulated tools when installing or working with this equipment. Do not leave tools inside.

11.Remove personal metal items such as rings, bracelets, necklaces, and watches when working with electrical equipment.

12.Do not open nor disassemble the top half of the unit. There are no userserviceable parts inside.

13.To disconnect the unit from DC power, turn the DC switch to OFF and then remove all PV string connectors from the DC terminals.

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Safety

DANGER

ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH HAZARDS

•Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices.

•This equipment must only be installed and serviced by qualified electrical personnel.

•Never energize the inverter with the covers removed.

•Do not open fuse holders under load. The fuse must be de-energized from all sources before servicing.

•The inverter is energized from multiple sources. Before removing covers identify all source, de-energize, lock-out, and tag-out and wait 10 minutes.

•Always use a properly rated voltage sensing device to confirm all circuits are de-energized.

•Replace all devices and covers before turning on power to this equipment.

•The DC conductors of this photovoltaic system are ungrounded and may be energized.

Failure to follow these instructions will result in death or serious injury.

Access to live parts shall be limited to suitably qualified electrical personnel. See installation instructions before connecting to the supply.

NOTICE

EQUIPMENT DAMAGE

•All cables connected to the CL-60 must run through the cable glands on the unit.

•This unit is susceptible to damage from EMI and nearby lightning strikes unless a surge protection device (a lightning arrestor) is installed.

•Turn Off all devices before connecting cables.

•Use the CL-60’s DC switch as its On/Off switch.

•To isolate the CL-60, follow “Lock-Out Tag-Out (LOTO) Procedure” on page xi.

Failure to follow these instructions can damage equipment or affect network performance.

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Safety

Storage Information

Store the inverter properly when the inverter is not to be installed immediately.

1.Inverter must be packed inside its original carton with the desiccant bags inside.

2.Store the inverter with its front panel facing up. The carton should lay flat and parallel to the ground.

3.Seal the carton with standard packaging tape.

4.Store the inverter in a dry and clean place to protect it against dust and moisture.

5.Temperature: -30 to 85 °C (-22 to 185 ºF) Relative humidity: 0 to 100%.

6.Do not stack more than two inverters on top of another.

7.Keep the inverter away from chemically corrosive materials.

8.Periodically check for any visible damages to the carton and inspect the inverter right away if the carton shows signs of penetration during the storage period. Replace the carton, if necessary.

NOTE: A thorough and professional inspection may be required before installing the inverter after more than six months in storage. Contact a local Schneider Electric sales representative for information on how to arrange the inspection.

IMPORTANT: Storage beyond two years voids the warranty.

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Safety

Lock-Out Tag-Out (LOTO) Procedure

Lock-out refers to the practice of preventing de-energized circuits from being reenergized by putting locks on the disconnecting devices, holding them open. Tag-out refers to the practice of attaching a tag to the disconnect-device locks warning others not to operate the disconnect device and containing information relating to the lock-out, such as the person responsible, the reason, and the date and time. Combined these two practices are called the lock-out and tag-out (LOTO) procedure.

DANGER

ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH HAZARDS

•Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices.

•This equipment must only be installed and serviced by qualified electrical personnel.

•Never energize the inverter with the covers removed.

•Always use a properly rated voltage sensing device to confirm all circuits are de-energized.

•Replace all devices and covers before turning on power to this equipment.

•The inverter is energized from multiple sources. Before opening the cover identify the power source (see A), de-energize (see B), lock-out and tagout (see C), and wait ten minutes for circuits to discharge (see D).

Failure to follow these instructions will result in death or serious injury.

LOTO	CL-60
DC Discon-	AC Panel
nect Device	Breaker	Mains
PV string	DC Switch
		LOTO

Figure 1-1 Single Line Diagram for CL-60

A1. Identify any disconnect device upstream from the CL-60 unit.

B2. Open the disconnect device that connects to the CL-60 to cut off DC power.

C3. Turn the CL-60’s DC Switch to OFF position.

4.Lock-out and tag out the external DC disconnect device.

5.Remove all PV string connectors from the DC terminals.

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A6. Identify the AC Panel Breaker downstream from the CL-60 unit.

B7. Open the AC Panel door.

8.Turn Off the AC Panel Breaker (open the switch) that connects to the CL-60 to cut off AC power.

9.Close the AC Panel door.

C10. Lock-out and tag out the AC Panel.

D11. Wait ten minutes for the circuits in the CL-60 to discharge.

12.Check that the inverter is in zero energy state before performing work.

13.Open the CL-60 enclosure and commence service and maintenance activities.

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Contents

Important Safety Instructions

Safety Information - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - viii Storage Information - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - x Lock-Out Tag-Out (LOTO) Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -xi

1 Introduction

Conext CL-60 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–2

Physical Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–4

Dimensions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–5

Inverter Dimensions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–5

Packaging Box Dimensions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–5

Product Label - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–6

LCD Display - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–7

DC Switch - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–8

Technical Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–9

CL-60 Circuit Diagram - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–9

Standard Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–9

Derating Feature - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–10

2 Installation

Pre-Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2

Planning the Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2

Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–3

What’s In The Box - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–3

Material and Tools - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4

Location Information - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4

Install and Mount the CL-60 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–8

Torque Values - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–15

3 Electrical Connections

Precautions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2

Planning the Electrical Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2

Cabling and Wiring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3

Material and Tools - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3

Terminal and Cable Entry Points (for CL-60E) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–5

Terminal and Cable Entry Points (for CL-60A) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–6

AC Side Cable Connection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–7

AC Side Requirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–7

AC Circuit Breaker - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–7

Residual Current Device - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–7

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Contents

Multiple Inverters in Parallel Connection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–8

Grid Connection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–9

PV Array Connection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–14

PV Input Configuration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–14

PV Input Connection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–16

Grounding the Inverter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–21

Grounding System Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–21

Second Protective Earth Terminal - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–22

Communication Connection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–23

Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–23

RS-485 Communication System - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–24

Ethernet Connection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–28

4 Commissioning

Inspection Before Commissioning - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–2

Commissioning Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–2

5 LCD Display Operation

Description of the Selection Buttons - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–2 Menu Tree - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–3 Main Screen - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–4 Contrast Adjustment- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–6 Checking Running Information - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–6 Checking History Information - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–8

Checking Running Records - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–8 Checking Fault (Event) Records - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–8 Checking History Event Records - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–9 Checking Energy Records - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–9 Starting/Stopping - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–10 Password Entry - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–11 System Parameter Setting- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–12 Language Setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–12 Time Setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–12 Total Energy Deviation Adjustment - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–13 Load Default (Factory Reset) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–14 Checking Firmware Version - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–14 Running Parameter Setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–15 Main Screen of Run-param - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–15 Active/Reactive Power Parameters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–18 Reactive Power Regulation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–18 Pf Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–18 Qt Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–19 Off Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–19 Q(P) Mode (when the country selection is not “IT”) - - - - - - - - - - - - - - - - - - - - - - - - - - 5–19

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	Contents
Q(U) Mode (when the country selection is not “IT”) - - - - - - - - - - - - - - - - - - - - - - -	- - - 5–20
Reactive Power Setting for Italy - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–22
Italy Q(P) Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–22
Italy Q(U) Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–23
Save P/Q-set - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–25
Time Parameters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–25
LVRT Parameter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–26
Derating Parameters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–26
ISO Parameters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–27
Protection Parameter Setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–27
Country Setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–28
Single-stage Protection Parameter Setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–30
Multi-stage Protection Parameter Setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–30
Protection Recovery Setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–32
Protection Parameter Confirmation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–32
Communication Parameter Setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -	- - 5–33

6 Troubleshooting

Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–2

LED Indicator - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–3

LCD Screen - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–4

Maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–10

Routine Maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–10

Maintenance Instructions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–11

Fan Maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–11

Replacing the Fuse - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–13

Replacing an Expended DC SPD - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–14

Cleaning the Air Inlet and Outlet - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–15

7 Disconnecting, Dismantling, and Disposing the CL-60

Disconnecting the CL-60- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7–2

Dismantling the CL-60- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7–4

Disposing the CL-60 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7–5

8 Specifications

Product Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8–2

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xvi

1 Introduction

Chapter 1 contains general information about:

•Conext CL-60

•Physical Features

•Technical Features

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1–1

Introduction

Conext CL-60

The Conext CL-60 (also referred to as CL-60 PV Inverter) is a transformerless three-phase PV string inverter that is designed to be an integral part of any utility grid-connected PV Power System.

The Conext CL-60 is designed to convert DC power generated from the PV array into AC power that is compatible with utility grade AC power. The following diagram illustrates its fundamental application.

WARNING

ELECTRICAL SHOCK HAZARD

•Do not connect the inverter to a PV string where the positive and negative terminals of the PV strings need to be grounded.

•Do not connect any local load between the inverter and the AC circuit breaker.

•Use the inverter ONLY in a grid-connected PV system.

Failure to follow these instructions can result in death or serious injury.

PV Array

CL-60

Transformer

Utility Grid

without grounding

TT, TN-C, TN-S,

TN-C-S, IT

Figure 1-1 Fundamental Application

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Conext CL-60

TN-S

TN-C

TN-C-S

transformer

transformer

transformer

L1

L1

L1

L2

L2

L2

L3

L3

L3

N

PEN

N

PE

PE

PE

PE

PE

CL 60

CL 60

CL 60

TT

IT

transformer

L1

transformer

L1

L2

L2

L3

L3

N

PE

PE

CL 60

CL 60

Figure 1-2 Type of Grid Connections

Grid Connection More than one CL-60 PV Inverter can be connected to the PV system if the total Conditions capacity of the PV system (PV array) exceeds the capacity of a single inverter.

Each inverter in the multiple setup connects individually to a PV string at the inverter’s DC input side. Then the inverter’s AC output side connects to the AC mains (the grid).

NOTICE

EQUIPMENT DAMAGE

Follow local regulations when installing a connection to a either a TT or TN system. An additional external Type B RCD (residual current detection) device rated 300 mA continuous may be required and combined with additional automatic disconnect devices.

Failure to follow these instructions can result in equipment damage.

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Introduction

Physical Features

		3
	1
		6
		7
		8
	5	3
2	4	3
		9
	11	10

Figure 1-3 CL-60 Components (CL-60E shown)

Item Description

1LCD Display is the main HMI for viewing operational information and changing parameter values for settings.

2Electrical connection area includes the DC terminals, AC terminals, and RS-485 communication terminals.

3Hole Inserts for Screw-in Handles are used for seating the screw-in handles. The handles are used for moving, handling, and mounting the PV Inverter.

4	PE second terminal
5	Air ventilation is equipped with fans to draw hot air out.
6	Backplate is used to hang the PV Inverter onto the wall.
7	Fans (3x) with protective grate are used for forced-air cooling inside
	the inverter enclosure.

8DC switch is a protective component for safely disconnecting DC power from the PV Array but only up to the terminals.

For full disconnection, disconnect power from the PV disconnect device. See “Single Line Diagram for CL-60” on page xi.

9Warning Label Read before installing, maintaining, and servicing the unit.

10Rating Label contains the unit’s electrical specifications and regulatory markings.

11CL-60A has an AC Switch in the area shown.

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Physical Features

Dimensions

Inverter Dimensions

625 mm

24.6 in

250 mm

9.8 in

991 mm

39 in

Unit weight: 66.0 kg (CL-60E) 147 lbs (CL-60A)

Figure 1-4 Conext CL-60 Dimensions (CL-60E shown)

Packaging Box Dimensions

Gross weight: 76.0 kg (CL-60E) 168 lbs (CL-60A)

Height:

375 mm / 14.8 in

Length:

Width: 1160 mm / 45.7 in 770 mm / 30.3 in

Figure 1-5 Conext CL-60 Packaging Box Dimensions

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Introduction

Product Label

product name

product ratings

product part number

serial number

certification and

regulatory

markings manufacturing date

Figure 1-6 Example of a Conext CL-60 Product Label

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Physical Features

LCD Display

The LCD Display is the main interface of the CL-60 PV Inverter. It is made up of two LED indicators, two buttons, and the screen itself.

1

2

3

NOTE: Condensation may appear behind the LCD display. This occurrence is normal in cold climate conditions. The condensation dissipates soon after the unit starts producing power or when ambient temperature settles above the dew point.

Figure 1-7 LCD Display
Item	Description
1	LED Indicators – RUN	and ALERT	.

Indicates the present operational state of the PV Inverter.

2	Selection Buttons – ESC (and down)	and

OK (and next) .

Use for navigating the LCD interface, selecting settings, and changing parameters of settings.

3LCD Screen. Displays the present state of the PV Inverter, operational and alarm information, and present settings.

Table 1-1 Description of LED Indicators

	LED Indicators	Description
	RUN - On	The PV Inverter is in operation.
	ALERT - Off
	RUN - Off	A ground fault (or any event) is
		detected or a protection feature is
	ALERT - On	enabled.
	RUN - Off	The PV Inverter is not in operation
		or a communication fault is
	ALERT - Off	detected between the DSP and
		the LCD Display.
	RUN - flashing	The PV Inverter is communicating
	ALERT - Off	a warning.
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Introduction

DC Switch

The DC Switch is both the main power switch and a protective component which is used to safely disconnect DC power between the PV array and the PV Inverter whenever necessary to do so.

The PV Inverter operates automatically (without the need of switching On or Off) when DC input and AC output requirements are continuously met. Turn the DC switch to the Off position only to stop PV Inverter operation when a ground fault condition is detected or when there is a non-ground fault condition to stop inverter operation such as maintenance and servicing.

WARNING

ELECTRIC SHOCK HAZARD

•Do not perform maintenance and servicing without totally disconnecting the DC source from the inverter. The DC switch does not de-energize the DC fuse circuits. The fuse circuits remain live even if the DC switch is turned to the Off position.

•To remove power to the inverter, disconnect power from the PV disconnect device. See “Single Line Diagram for CL-60” on page xi.

•Alternatively, to remove power to the inverter, open all MC4 type connectors using a special tool for disconnection.

Failure to follow these instructions can result in death or serious injury.

NOTE: For CL-60A, the DC switch is provided with a lockable twisting knob to meet the NFPA 70E standard.

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Technical Features

Technical Features

CL-60 Circuit Diagram

Figure 1-8 shows the main circuit of the PV Inverter.

Maximum Power Point Tracking (MPPT) is utilized to optimize harvesting DC power from the PV array with different PV input conditions.

The PV Inverter circuit converts DC power into AC power and feeds it to the utility grid through the inverter’s AC terminal. The protection circuit is equipped to ensure the device’s safe operation and personal safety.

The DC switch is used to disconnect DC power from the PV Array safely.

The inverter provides standard RS-485 ports for communication.

DC

DC EMI

Filter

Fan

Auxiliary power circuit

	DC bus		Relay	L1
		AC	AC
	Inversion			L2
			EMI
	circuit	Reactor		L3
			Filter
				N
				PE

DSP+CPLD	LCD/RS485

	CL-60E Wiring Box contents				CL-60A Wiring Box contents
	DC		L1 L2 L3 N			DC		L1 L2 L3	N
	+	-				+ -	SPD
	- DC switch	SPD			- DC switch
	- 14 strings	in positiveDC	polarity		- 8 inputs (1@ for 2 combined strings)
	- 15A fusesswitch				- 30ADC	fuses in both polarities			AC
	DC				switch		DC		switch
		Current detection				Current detection				SPD
fuse	- monitoring in negative polarity			fuse	- type 2 DC SPD					AC
	- type 2 DC SPD				- type 3 AC SPD
DC	- type 3 AC SPD			DC	- AC switch

+	-	L1	L2 L3 N	PE	+	-	L1 L2 L3 N	PE
DC In					DC In

Figure 1-8 Conext CL-60 Circuit Diagram

Standard Features

Inverter Function The device’s main function is to convert DC current into gridcompatible AC current then feed this current into the grid.

Data Storage and LCD Display The onboard memory stores information such as fault detection and displays them on the screen of the integrated LCD Display.

Device Configuration The LCD Display provides the main interface for accessing device settings and changing them for optimal operation of the inverter.

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Introduction

Communication Interface Features a standard RS-485 port which can be connected with a monitoring device such as a power meter,

Protection Features The unit is equipped with the following features for preventing inverter damage, other equipment damage, and personal injury hazards.

•Short-circuit protection

•Ground insulation resistance detection

•Inverter output voltage monitoring

•Inverter output frequency detection

•Residual current protection

•DC injection of AC output current surveillance

•Anti-islanding protection

•Ambient temperature monitoring

•DC over-voltage protection

•Over-current protection

•Power module over-temperature protection

•Fan failure protection

•Arc fault detection and protection (for CL-60A)

Derating Feature

Output derating is a way to protect the inverter from overload or potential fault detections. These situations prompt the PV Inverter to initiate power derating:

•Altitude higher than 3000 meters

•Internal temperature is too high (including ambient temperature and internal components temperature)

NOTE: For example, installing the inverter in an enclosed space may hasten derating.

•Grid voltage is too low

•External power class adjustment

•Grid frequency is too high (see NOTE)

NOTE: Valid only when the country selected is DE or IT.

•High grid voltage with a simultaneous low PV voltage.

Power Limit Setting Inverter output power can be adjusted via the LCD Display or a remote grid dispatch from the utility company. The corresponding operating state will be displayed on the LCD screen.

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Technical Features

Over-temperature Derating High ambient temperature, a blocked fan, or poor ventilation will initiate inverter power derating.

When the temperature inside the unit exceeds the upper limit, the inverter will derate its power output until the internal temperature drops within the allowable range.

	CL-60E Temperature Derating Curve
	Apparent Power	KVA	Vac=400V
66
60
					Vmpp=600V
55					Vmpp=710V
50					Vmpp=850V
45
40					Ambient Temp (°C)
35	40	45	50	55	60

		CL-60A Temperature derating curve
Apparent power		KVA		Vac=380V
63.36
60
					Vmpp=600V
55					Vmpp=710V
50					Vmpp=850V
45
40					Ambient Temp (°C)
35	40	45	50	55	60

not to scale

NOTE: The lower limit of the over-temperature derating is 75% of nominal power. If both the module and internal temperatures reach power derating conditions, the

inverter will derate the power output based on the lower temperature between the two.

Figure 1-9 Over-Temperature Derating

Grid Under-voltage Derating When grid voltage is low, the inverter will derate the output power to make sure the output current is within the allowable range. Once the grid voltage is within Vmin (215V), the inverter will derate its output power.

P[Vmin…266V] = Pn × (Vgrid / 230V)

Pn

Working area

Vmin 215V Vmax

Figure 1-10 Grid Under-Voltage Derating

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Introduction

PV Over-voltage Derating The inverter regularly scans the PV voltage every 25 minutes and forces the PV to derate to test whether the maximum power point is less than 860 volts.

At 66 KVA, if the maximum power point is higher than 860 volts, then the inverter will return to the higher voltage limit before it starts derating.

Output voltage max when PV voltage < 860

Output voltage max when PV voltage < 890

Output voltage max when PV voltage < 950

Figure 1-11 PV Over-Voltage Derating

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2 Installation

Chapter 2 contains information about:

•Pre-Installation

•Installation

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Installation

Pre-Installation

Before installing the Conext CL-60, read all instructions and cautionary markings in this Guide.

NOTE: Obtain all necessary permits prior to starting the installation.

Installations must meet all local codes and standards. Installation of this equipment should only be performed by skilled personnel such as qualified electricians and Certified Renewable Energy (RE) System installers.

Planning the Installation

•Read this entire chapter before beginning the installation. It is important to plan the installation from beginning to end.

•Assemble all tools and materials needed for the installation.

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