Carlo gavazzi Nrg series User manual

NRG EtherNet/IP™

User Manual

Operating instructions

Manuale d’istruzioni

Betriebsanleitung

Manuel d’instructions

Manual de instrucciones

Brugervejledning

 
 

V1.0 | NRG EtherNet/IP Preliminary User Manual | © 2020 | CARLO GAVAZZI LTD. 
EN 
 
 
 
 
Table of Contents 
 
 
Introduction ............................................................................................................................................................................................ 2 
1 Foreword ...................................................................................................................................................................................... 2 
2 Scope ........................................................................................................................................................................................... 2 
3 Disclaimer..................................................................................................................................................................................... 2 
4 Warning notice system ................................................................................................................................................................... 2 
5 Qualified personnel ....................................................................................................................................................................... 2 
6 Abbreviations and acronyms........................................................................................................................................................... 3 
7 Other documents........................................................................................................................................................................... 3 
8 Disposal........................................................................................................................................................................................ 3 
Description ............................................................................................................................................................................................. 4 
1 System overview............................................................................................................................................................................. 4 
2 System components........................................................................................................................................................................ 4 
Installation.............................................................................................................................................................................................. 6 
1 System configuration ...................................................................................................................................................................... 6 
2 Connection Diagrams .................................................................................................................................................................... 7 
3 Auto- addressing ........................................................................................................................................................................... 8 
4 Grounding .................................................................................................................................................................................... 9 
EtherNet/IP Configuration...................................................................................................................................................................... 10 
1 Importing the EDS file in Studio 5000 Logix Designer V31............................................................................................................... 10 
2 Adding the NRGC-EIP to a project in Studio 5000 Logix Designer V31 ............................................................................................. 12 
3 Start-up Parameters ..................................................................................................................................................................... 14 
4 EtherNet/IP factory reset ............................................................................................................................................................... 15 
Communication .................................................................................................................................................................................... 16 
1 Exclusive Owner Connection –Implicit Messaging .......................................................................................................................... 16 
2 Input Only Connection –Implicit Messaging................................................................................................................................... 16 
3 Explicit Messaging........................................................................................................................................................................ 17 
3.1 Standard CIP object classes ................................................................................................................................................. 17 
3.2 Vendor specific object classes .............................................................................................................................................. 22 
Functions.............................................................................................................................................................................................. 26 
1 Functions overview....................................................................................................................................................................... 26 
2 Switching modes.......................................................................................................................................................................... 26 
3 Measurements ............................................................................................................................................................................. 29 
Alarms and Diagnostics......................................................................................................................................................................... 30 
1 LED indications –NRG Controller.................................................................................................................................................. 30 
2 LED indications –RG..N ............................................................................................................................................................... 30 
3 Alarms –NRG Controller.............................................................................................................................................................. 31 
4 Alarms –RG..N ........................................................................................................................................................................... 32 
Service and Maintenance....................................................................................................................................................................... 35 
1 Internal bus communication check................................................................................................................................................. 35 
2 Replacing an RG..N ..................................................................................................................................................................... 35 
3 Using the NRG system without ‘REF’ terminal connection................................................................................................................. 36 
 
 

1. Introduction

1.1 Foreword

The NRG described hereafter is a sub-system made up of a number of solid state relays intended for the switching

of heaters in a machine. The solid state relays in this system are able to communicate with the main controller

through an NRG controller that facilitates communication between the solid state relays and the main controller.

The NRG controller is available for various communication interfaces including PROFINET. EtherNet/IP and Modbus

RTU. Through this communication, it is possible for the main controller to control each solid state relay, read

measurements related to each specific solid state relay and to identify specific failure modes related to the solid

state relay or its associated heater load.

1.2 Scope

This manual is intended to provide information about the functionalities that are provided by the NRG system,

explains set-up and configuration procedures, provides recommendations for use and gives a troubleshooting

guide.

Should there be any problems that cannot be solved with the information provided in this guide, contact your

Carlo Gavazzi sales representative for further assistance.

1.3 Disclaimer

Carlo Gavazzi accepts no liability for any consequence resulting from inappropriate, negligent, incorrect installation

or adjustment of parameters of the equipment. Nor can Carlo Gavazzi assume liability for recommendations that

appear or are implied in the following description. The information in this document is not considered binding on

any product warranty.

The contents of this guide are believed to be correct at the time of publishing. In the interests of commitment to a

policy of continuous development and improvement, Carlo Gavazzi reserves the right to change the specification

of the product or its performance, or the contents of this guide without prior notice.

1.4 Warning notice system

The symbols indicated below are used throughout this guide to indicate a particularly important subject or

information on safety instructions, configuration and installation of the products covered by this guide.

It is strongly recommended that this guide is read thoroughly before using the products and that safety related

recommendations are followed.

Danger

Indicates that death, severe personal injury or property damage will result if proper precautions are not taken.

Warning

Indicates actions that if not observed may lead to damage of the products.

Information

Indicates general information related to the proper use of the products.

1.5 Qualified personnel

The product / system described in this documentation may be operated only by personnel qualified for the specific

task that are also capable of identifying risks and avoid potential hazards when working with these products.

The NRG system features dangerous voltages and consequently failure to observe the instructions contend in this

user manual may cause serious harm to people and damage to property.

1.6 Abbreviations and acronyms

Acronyms

RG..N /

RG..CM..N /

End device

NRG Solid state relays

RGx1A..CM..N

NRG zero cross switching solid state relay

NRGC..

NRG Controller

COM

Common

PLC

Programmable Logic Controller

SSR

Solid State Relay

1.7 Other documents

Datasheets, installation guide, certificates and other relevant documentation can be found online at www.

gavazziautomation.com

1.8 Disposal

Information for users on the correct handling of waste of electrical and electronic equipment (WEEE)

With reference to European Union directive 2002/96/EC issued on 27 January 2003 and the related national

legislation, please note that:

•WEEE cannot be disposed of as municipal waste and such waste must be collected and disposed of

separately

•the public or private waste collection systems defined by local legislation must be used. In addition, the

equipment can be returned to the distributor at the end of its working life when buying new equipment

•the equipment may contain hazardous substances: the improper use or incorrect disposal of such may

have negative effects on human health and on the environment

•the symbol (crossed-out wheelie bin) shown on the product or on the packaging and on the instruction

sheet indicates that the equipment has been introduced onto the market after 13 August 2005 and

that it must be disposed of separately

•in the event of illegal disposal of electrical and electronic waste, the penalties are specified by local

waste disposal legislation.

Figure 1: NRG bus chain

2. Description

2.1 System overview

The NRG is a sub-system that consists of one or more BUS chains that interact with the main controller or PLC in the

machine through an Ethernet/IP communication interface. The communication link in the NRG systems can either

be used to control the solid state relay, monitor various parameters and diagnose faults in real time.

An NRG BUS chain is made up of a minimum 1x NRG controller and a minimum of 1x NRG solid state relay (also

referred to as end-device). The NRG bus chain can have a maximum of 32 end devices. The communication link

between the NRG controller and the end-devices is the Internal BUS.

When more solid state relays are needed in a system, multiple BUS chains can be utilised. Each BUS chain connects

to another BUS chain in a line topology via the NRG controllers of the respective BUS chains or in a star topology via

an ethernet switch.

2.2 System components

The following system components are required for an NRG bus chain:

Description

Part number

Notes

NRG controller

NRGC..

NRGC

NRG Controller with Modbus RTU.

NRGC-PN

NRG controller with PROFINET.

NRGC-EIP

NRG controller with EtherNet/IP.

1x RGN-TERMRES is included in the NRGC..

packaging. The RGN-TERMRES is to be

mounted on the last RG..N on the bus

chain.

NRG solid state relays

RG..CM..N

RGx1A..CM..N

NRG zero cross switching solid state relay

NRG Internal bus cables

RGCR-GN-xx

Proprietary cables terminated at both

ends with micro USB connector

NRG controller

The NRG controller handles the communication with the higher-level controller and with the NRG solid

state relays. It has to be supplied with a 24VDC supply and provides the power supply to the

connected NRG solid state relays via the internal bus cables. A termination resistor (RGN-TERMRES)

provided with every NRG controller has to be fitted on the last solid state relay of the NRG bus chain.

The NRG controller is also capable of performing internal operations to setup and maintain the

internal bus

Various NRG Controller variants are available which facilitate communication via different

communication protocols. These are identified via the part numbers. The NRG controller with an

EtherNet/IP communication interface is the NRGC-EIP.

NRGC-EIP

NRG solid state relays

The RG..N solid state relays are the switching components in the NRG system.

They are available with and without heatsink. For a reference of the variants

available refer to the RG..N datasheet. The RG..CM..N utilises the

communication system for switching, measurement and diagnostic thus

minimising the number of components required in the system.

Through the internal BUS, the main controller can read measurement

parameters and diagnostics information related to the RG..N and its load.

The RG..N is also capable of detecting certain fault conditions. A fault

condition is indicated through a red LED available on the façade of the

RG..N. The type of fault can be identified through a specific flash rate of the

red LED and identified via the communication system.

Since the main controller needs to address each specific RG..N individually, each RG..N needs to be uniquely

identifiable. It is not required to physically set the ID for each RG..N. This can be done through an auto-addressing

function which occurs automatically on the first start up; whereby each RG..N on the bus chain will automatically be

assigned an ID with respect to its physical placement on the internal bus.

NRG internal cables

The RCRGN-xxx-2 is a 5-way proprietary cable used for the internal BUS, i.e., between the NRG

controller and the first RG..N on the BUS chain and between respective RG..Ns on the BUS. This

internal BUS cable though terminated with a micro-USB plug is not a standard USB cable.

Apart from the data and supply lines, the RCRGN-xxx-2 are equipped with an additional wire

utilised for the auto-addressing of the RG..Ns on the NRG bus chain. These cables are

available in various lengths from Carlo Gavazzi.

For further technical information on each NRG system component please refer to the respective product datasheets:

System

component

Datasheet

QR Codes

NRGC-EIP

https://gavazziautomation.com/images/PIM/DATASHEET/ENG/SSR_NRGC_EIP.pdf

NRGC-PN

http://gavazziautomation.com/docs/mt_gh/SSR_NRGC_PN.pdf

RG..CM..N

RCRGN-

xxx-2

http://gavazziautomation.com/docs/mt_gh/SSR_RG_CM_N.pdf

Figure 2 NRG bus chain configuration

3. Installation

Installation general requirements

Avoid installing the device in environments with the following characteristics:

•relative humidity higher than 95% or with condensation;

•strong vibrations or shocks;

•exposure to water sprays;

•exposure to aggressive and polluting atmospheres (e.g.: sulphur and ammonia fumes, saline mist,

smoke) to avoid corrosion and/or oxidation

•strong magnetic and/or radio frequency interference (thus avoid installation near transmitting

antennae)

•exposure of the devices to direct sunlight and the elements in general.

3.1 System configuration

The NRG bus chain consists of 1 NRG controller and up to 32 NRG solid state relays. The NRG controller is the

interface to the main controller via the 2xRJ45 shielded communication ports. The connection between the NRG

controller and the solid state relays is through the internal bus cables. Each RG..N is equipped with 2x micro USB

ports to allow looping between one RG..N and another using the RGCGN-xx-2 bus cables from Carlo Gavazzi. The

RGN-TERMRES supplied with each NRG controller has to be connected to the last RG..N on the NRG bus chain.

The NRG controller has to be supplied with a 24VDC via the supply input plug (Us-, Us+). Power to the RG..Ns on the

bus chain is provided via the internal bus cables through the NRG controller.

The RG..Ns require a mains reference connection with respect to the load (neutral or another phase) through the

‘Ref’ connector to provide voltage and power measurements. The Ref connector has 2x internally shorted terminals

to allow for looping of the mains reference onto various RG..Ns.

3.2 Connection Diagrams

The NRG bus chain can be connected to the ethernet network via the pair of RJ45 connectors located on the NRG

controller. The NRG can be configured in any network topology. If more than 32 solid state relays are required in an

application, multiple bus chains can be utilised. These can be configured in a line or star topology as deemed fit for

the application. Wiring between EtherNet/IP devices should follow the standard EtherNet/IP cabling guidelines.

Figure 3 NRG bus chains connected in a line EtherNet/IP topology

Figure 4 NRG bus chain connected in a star EtherNet/IP network

The NRG Controller supports the Device Level Ring (DLR) protocol and therefore can also be configured in a ring

topology.

3.3 Auto- addressing

The RG..Ns on the bus chain are automatically addressed upon the initial start-up of the system. The RG..Ns are

addressed based on their position on the bus chain.

Figure 5 SSRs in NRG bus chain are automatically addressed based on their position on the bus

In case of an RG..N replacement, or any changes to the NRG bus chain, the RG..Ns have to be readdressed. Follow

the procedure below (Figure 6) to readdress the RG..Ns on the NRG bus chain manually. Alternatively, auto-

addressing can also be performed digitally, check Communications section for further information.

Figure 6 Manual Auto addressing procedure

STEP 1: Hold the blue button while inserting the power supply plug of the NRGC-EIP

STEP 2: Release the blue button once the Alarm LED turns ON

STEP 1

STEP 2

3.4 Grounding

Connecting the protective ground for the NRG Controller

The NRG controller is equipped with a metal contact clip at the back of the product to provide functional

grounding via the Din Rail. The Din Rail must be conductive and grounded. Shielded Cat 5e cables fitted with an

outer metallic shell should be used. The shell should be connected to the wire screen of the cable.

Figure 7 Metal din clip on NRG controller for functional grounding

Connecting the protective earth for the NRG solid state relays

The heatsink of the RGC..Ns has to be earthed via the connection provided using an M5 screw. Note that the M5

Protective Earth (PE) screw is not provided with the RG..N.

Figure 8 RG..N connection for Protective Earth

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