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ALTUS Nexto Series User Manual

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Nexto Series
User Manual
MU214600 Rev. H
June 5, 2020

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Summary of Contents for ALTUS Nexto Series

  • Page 1 Nexto Series User Manual MU214600 Rev. H June 5, 2020...
  • Page 2 General Supply Conditions No part of this document may be copied or reproduced in any form without the prior written consent of Altus Sistemas de Automação S.A. who reserves the right to carry out alterations without prior advice. According to current legislation in Brazil, the Consumer Defense Code, we are giving the following information to clients who use our products, regarding personal safety and premises.

  • Page 3: Table Of Contents

    1.1. Nexto Series Features ......... .
  • Page 4 CONTENTS 1.1.5.5. Robustness ........15 1.1.5.6.
  • Page 5 CONTENTS 3.1.1.7. 8 Slot Backplane Rack ....... . 33 3.1.1.8. 12-Slot Backplane Rack .
  • Page 6 CONTENTS 4.2.7. Spring-Connectors ........65 4.2.7.1.

  • Page 7: Introduction

    Other modules of Nexto Series made the Nexto Jet solution, which is an ideal set of inputs and outputs for small and medium application size, beyond distributed systems.

  • Page 8: Mixed I/O Modules

    1. INTRODUCTION Nexto Jet: NJ1001: 24 Vdc 16 DI Module NJ6000: 8 AI Voltage/Current Module 16 Bits NJ6001: 6 AI Voltage/Current Module 12 Bits NJ6010: 8 AI Thermocouple Module NJ6011: 4 AI Thermocouple Module NJ6020: 8 AI RTD Module 1.1.1.4. Mixed I/O Modules Nexto: NX1005: 24 Vdc 8 DO Transistor / 8 DI Mixed Module Nexto Jet:...

  • Page 9: Accessories

    NX9406: 18-Terminal Connector with Fixation 1.1.2. Innovative Features Nexto Series brings to the user many innovations regarding utilization, supervision and system maintenance. These features were developed focusing a new concept in industrial automation. Battery Free Operation: Nexto Series does not require any kind of battery for memory maintenance and real time clock operation.

  • Page 10: Architecture

    ETD – Electronic Tag on Display: Another exclusive feature that Nexto Series brings to PLCs is the Electronic Tag on Display. This new functionality brings the process of checking the tag names of any I/O pin or module used in the system directly to the CPU’s graphic display.

  • Page 11: I/O Modules

    The I/O modules are plugged into the racks for adapting the different types of field signals to the CPU or fieldbus heads. Nexto Series supports a wide variety of I/O types and operating ranges, thus covering all the typical needs for an automation system.

  • Page 12: Application Examples

    1. INTRODUCTION 1.1.4. Application Examples 1.1.4.1. Compact CPU This architecture explores the needs of compact applications. A CPU with integrated power supply (NX3003, NX3004 or NX3005), 8 positions rack and input and output modules enable the reduction of space and cost in your project. These architectures presented in Figure and Figure are the most indicated to be used in machinery automation.

  • Page 13: Single Cpu With Remote Rack Expansion

    1. INTRODUCTION 1.1.4.3. Single CPU with Remote Rack Expansion This architecture is based on a base rack (where the CPU is placed) and remote racks. The communication between the base rack and remote racks is done via the bus expansion module. Each remote rack needs its own power supply module (PSU) and bus expansion module.

  • Page 14: Single Cpu With Remote Rack Expansion And Loopback

    1. INTRODUCTION 1.1.4.4. Single CPU with Remote Rack Expansion and Loopback This architecture is based on the previous one with a base rack (where the CPU is placed) and remote racks. The commu- nication between the base rack and remote racks is also made via the bus expansion module. The only difference is that the outgoing data port in the last bus expansion module is connected to the base rack expansion module incoming data port.

  • Page 15: Single Cpu With Redundant Rack Expansion And Loopback

    1. INTRODUCTION 1.1.4.5. Single CPU with Redundant Rack Expansion and Loopback This architecture is based on the use of two bus expansion modules in the racks. With more than one expansion module, the system has an outstanding availability, because it supports single cable failure or expansion module failure. Just as the previous architecture, this is intended for systems where maintenance is an issue and the system must be available for a longer time.

  • Page 16: Fieldbus Interfaces

    1. INTRODUCTION 1.1.4.6. Fieldbus Interfaces This architecture is based on the use of fieldbus interfaces to access networks for distributing remote I/Os and other third- party devices. Figure 10: Fieldbus Interfaces...

  • Page 17: Fieldbus Interfaces With Redundancy

    1. INTRODUCTION 1.1.4.7. Fieldbus Interfaces with Redundancy This architecture is based on the previous one with the difference of using two fieldbus interfaces for accessing the same network. Since it has two interfaces, the network is redundant, providing a system with higher availability. Figure 11: Fieldbus Interfaces with Redundancy ATTENTION: The modules that comprise the solution Nexto Jet not support any kind of redundancy, so its...

  • Page 18: Modbus Tcp Head

    1. INTRODUCTION 1.1.4.8. MODBUS TCP Head This architecture is based on the use of fieldbus MODBUS interfaces to access networks for distributing remote I/Os and other third-party devices. Figure 12: MODBUS TCP Head...

  • Page 19: Cpu Redundancy

    1.1.4.9. CPU Redundancy For very critical applications, Nexto Series is capable of having redundancy of CPUs. The only CPU model with this feature is NX3030. These CPUs can be located in different racks (known as half clusters). In this architecture, the system will have one controller running the control task (primary controller) and another one acting as the standby controller with all current system status for automatic switchover in the event of a primary controller failure.

  • Page 20: Cpu & Network Interface Modules Redundancy

    1.1.5.2. Modules The modules carry high density I/Os. Nexto Series delivers two module form factors – slim and full size modules – allowing the best I/O combination for many applications where high-density and panel size can be an issue. Every I/O module has a display for local diagnosis, where each I/O point state is presented.

  • Page 21: Terminal Block Insertion & Removal

    1.1.5.9. Capacities In Nexto Series, each rack can fit up to 24 18-mm modules or 12 36-mm modules. With this architecture, a single CPU can control 320 I/O points using a single rack. This can be expanded up to 25 racks (according the CPU model) using bus expansion modules.

  • Page 22: Mt8500 - Mastertool Iec Xe

    1. INTRODUCTION 1.1.6. MT8500 – MasterTool IEC XE The MT8500 is the software suite for programming, configuration, diagnosis and commissioning and offers as mainly features: IEC 61131-3 Programming Languages Editors for Project Configuration and Hardware Configuration Object-Oriented Programming Online, Debugging and Commissioning features Simulation Web page development (accessible through HTTP protocol) User Documentation &...

  • Page 23: Editors For Project Configuration And Hardware Configuration

    1. INTRODUCTION Figure 16: MT8500 working 1.1.6.2. Editors for Project Configuration and Hardware Configuration With the help of special editors a project can be easily configured in MasterTool IEC XE. The graphical tool allows a fast and comprehensive way to configure the system. Additionally, the user has the complete visualization of the application architecture with the physical position and module information.

  • Page 24: Simulation

    1. INTRODUCTION Figure 17: Commissioning Features The values of declared variables for example are displayed in the program code. These values can be changed or forced without any difficulty. By setting breakpoints and then stepping through the code line by line, errors can easily be detected. Breakpoints in MasterTool IEC XE can be assigned to certain conditions to achieve even more precision in the debugging process.

  • Page 25: User Documentation & Help Files

    1. INTRODUCTION Figure 18: Web page development The screen editor is embedded at MasterTool IEC XE in a way that its integration with the PLC logic is transparent and intuitive, which reduces the time spent on development and integration. Once the screens are created, they are loaded onto the PLC along with the rest of the program and they are accessed through a web browser via HTTP protocol.

  • Page 26: Enhanced Diagnostics

    1.1.7. I/O System The list of I/O modules for Nexto Series is presented in the beginning of this document, as well a brief description of each of them. The following criteria should be considered when selecting the I/O modules: Rated voltage for the application (24 Vdc, voltage or current analog points, etc.)

  • Page 27: Standards And Certifications

    1. INTRODUCTION 1.1.9. Standards and Certifications IEC 61131-2 DNV-GL CPUs – Central Processing Units NX3003 NX3004 NX3005 NX3010 NX3020 NX3030 Fieldbus Interfaces NX5000 NX5001 NX5100 NX5101 NX5110 NX5210 Input Modules Nexto NX1001 NX6000 NX6010 NX6014 NX6020 Nexto Jet NJ1001 NJ6000 NJ6001 NJ6010 NJ6011...

  • Page 28: Documents Related To This Manual

    In order to obtain additional information regarding the Nexto Series, other documents (manuals and technical characteris- tics) besides this one, may be accessed. These documents are available in its last version on the site http://www.altus.com.br. Each product has a document designed by Technical Characteristics (CE), where the product features are described. Fur- thermore, the product may have User Manuals (the manuals codes are listed in the CE).

  • Page 29: Visual Inspection

    English CT114200 Características Técnicas Fonte de Alimentação NX8000 Portuguese Características Técnicas del Fuente de Alimentación CS114200 Spanish NX8000 Nexto Series Accessories for Backplane Rack Technical CE114810 English Characteristics Características Técnicas Acessórios para Bastidor Série CT114810 Portuguese Nexto Características Técnicas del Cierres Laterales para el...

  • Page 30: Technical Support

    Altus Technical Support is contacted. 1.4. Technical Support For Altus Technical Support contact in São Leopoldo, RS, call +55 51 3589-9500. For further information regarding the Altus Technical Support existent on other places, see http://www.altus.com.br/site_en/...

  • Page 31: Configuration

    According to the system necessities, it might be necessary to use some special module, such as the redundancy link module – NX4010 which is used in the Nexto Series half-cluster redundancy solution. For further information regarding which modules are necessary for the half-cluster redundancy solution see Nexto Series CPUs User Manual – MU214605, CPU NX3030 Redundancy chapter.

  • Page 32: Step 4 - Determine Backplane Rack Quantity

    NX4000 module, which is considered a special module, but is used in all racks. This document presents the complete Nexto Series module list. In this list, it’s possible to verify which modules are defined as fieldbus interfaces and special modules I/O modules can be used whether in the same CPU rack as in remote racks The Nexto Series have modules with two different widths.

  • Page 33: Mastertool Iec Xe Graphic Editor

    2.2.1. Compatible components tree All Nexto Series modules are listed on MasterTool IEC XE graphic editor side. To insert any of them in a given backplane rack, it’s necessary to drag the desired module to the desired slot of the backplane rack.

  • Page 34: Panel Design

    3.1. Mechanic Design 3.1.1. Dimensions There are different module sizes in Nexto Series, depending on the module type. 3.1.1.1. 18 mm Nexto I/O Module This module size is used in I/O modules which fills one slot in the backplane rack.

  • Page 35: Mm Nexto Jet I/O Module

    3. PANEL DESIGN 3.1.1.2. 18 mm Nexto Jet I/O Module This module size is used in I/O modules that composes the Nexto Jet solution and which fills one slot in the backplane rack. Dimensions in mm. Figure 21: Nexto Jet 18mm I/O Module...

  • Page 36: Mm Nexto I/O Module

    3. PANEL DESIGN 3.1.1.3. 36 mm Nexto I/O Module This module size is used in I/O modules which fills two slots in the backplane rack. Dimensions in mm. Figure 22: Nexto 36 mm I/O Module...

  • Page 37: Cpu, Fieldbus Interfaces, Power Sources And Special Modules

    3. PANEL DESIGN 3.1.1.4. CPU, Fieldbus Interfaces, Power Sources and Special Modules This module size is used for all other modules from the Nexto Series. Figure below shows a NX3020 CPU. Dimensions in mm. Figure 23: 36 mm NX3020 CPU module...

  • Page 38: 2-Slot Base For Panel Assembly

    3. PANEL DESIGN 3.1.1.5. 2-Slot base for panel assembly Dimensions in mm. Figure 24: 2-Slot base for panel assembly 3.1.1.6. 8 Slot Backplane Rack (Without Hot Swap) Dimensions in mm. Figure 25: 8-Slot Backplane Rack (Without Hot Swap)

  • Page 39: Slot Backplane Rack

    3. PANEL DESIGN 3.1.1.7. 8 Slot Backplane Rack Dimensions in mm. Figure 26: 8-Slot Backplane Rack 3.1.1.8. 12-Slot Backplane Rack Dimensions in mm. Figure 27: 12-Slot Backplane Rack...

  • Page 40: 16-Slot Backplane Rack

    3.1.2. Assembled module depth in the backplane rack Nexto Series module and rack cluster depth can be calculated by summing 2.49 mm to the module depth. In the example shown on figure below, a module 115.30 mm deep was used. Considering the rack, the resulting cluster depth is 117.79 mm.

  • Page 41: Spacing Between Modules And Other Equipment In The Panel

    flow through the PLC, in the convection form, in order to keep the equipment temperature. Figure and Table indicate the necessary spacing for the Nexto Series modules. Figure 31: Free space around the PLC Dimension A...

  • Page 42: Chute Dimensioning

    Consider the cable area including the isolation. 3.1.5. Horizontal/ Vertical Assembly Nexto Series allows the PLC utilization in the horizontal position. It’s not allowed the assembly in the vertical position in the rack. 3.2. Thermal Design Altus’ equipment is designed to work in a room temperature of up to 60 C (except when specified). Therefore, this must be the maximum internal temperature inside the panel.
  • Page 43 3. PANEL DESIGN Installation type according DIN-VDE 0660/500 standard Formula for A calculation (m ) Panel free on all sides A = 1.8 * H * (L + P) + 1.4 * L * P Panel with the back surface obstructed A = 1.4 * L * (H + P) + 1.8 * P * H Panel with one side surface obstructed A = 1.4 * L * (H + L) + 1.8 * L * H...
  • Page 44 3. PANEL DESIGN 350 = 5.5 * 3.96 * (Ti – 30) Ti = 46 C For the same panel, calculate the internal temperature for an installed power of 1000W. Qs = k * A * (Ti – Te) 1000 = 5.5 * 3.96 * (Ti – 30) Ti = 76 C In this case, the temperature has exceeded the equipment operation limit (60 C), and a solution must be provided to exchange the exceeding heat.

  • Page 45: Electrical Design

    The electrical design of the Altus PLCs must respect the IEEE 518/1977 standard, "Guide for Installation of Electrical Equipment to Minimize Electrical Noise Inputs to Controller External Sources". Following, the most important subjects are described.

  • Page 46: Panel Illumination

    3. PANEL DESIGN 3.3.4. Panel Illumination It’s very important to install illumination inside the panel, activated through a switch, to facilitate its operation. It’s recommended the illumination to be based on incandescent bulbs, as fluorescent luminaries may cause undesirable interference. If the latter are used, the following precautions must be made to reduce interference: Grounded metallic grid must be installed between the luminary and the panel, in order to reduce the noise emission The luminary supply cables must be shielded The switch must be protected by a metallic box and a filter must be placed in the supply network, next to the luminary...

  • Page 47: Circuit With Diode And Zener

    3. PANEL DESIGN 3.3.8.2. Circuit with Diode and Zener The circuit with zener diode is used when the circuit off time with diode is excessive. As the circuit with diode, it can only be used in DC. The zener diode voltage must be higher than the power supply peak voltage and the current at least the same as the load.

  • Page 48: Circuit With Capacitor

    3. PANEL DESIGN Figure 39: RC circuit parallel with the load 3.3.8.5. Circuit with Capacitor The circuit with capacitor is highly effective to suppress arcs generated during the opening of the contacts, but can cause wear of contact depending on the charge and discharge current of the capacitor. For selection of capacitor use the same rule of the RC circuit.

  • Page 49: Lightning Protection

    Each system has its own installation details; therefore it’s recommended that each case is studied individually to define the best protection choice. In critic cases, the Altus support service must be consulted.

  • Page 50: Installation

    4. INSTALLATION 4. Installation This chapter presents the necessary proceedings for the Nexto Series physical installation, as well as the care that should be taken with other installation within the panel where the CPU is been installed. 4.1. Visual Inspection Before resuming the installation process, it is advised to carefully visually inspect the equipment, verifying the existence of transport damage.

  • Page 51: Assembly

    Table 7: Rack drilling dimensions Nexto Series backplane rack has 6 holes for fixation. DIN 7985 M4 cross recessed pan head screws must be used in all holes. These screws can be fixed straight in the panel or using nuts, when the panel width is too thin to create a thread. At using nuts, it’s recommended the use of self-locking nuts to avoid it become loose.
  • Page 52 4. INSTALLATION Figure 45: Rack fixation - Alignment After that, the rack must be dragged down in order to fit the screws type 1 in the keyway, as presented on figure below. Figure 46: Rack fixation – Keyway fitting After the rack insertion is complete, all fixation screws must be assembled. To finish the process, the rack side covers must be inserted as presented on figure below.

  • Page 53: Removal

    To remove the rack, it’s necessary to execute the inverse process described on the Assembly subtitle. 4.2.2. Module Insertion The following example shows a Nexto Series generic module, this procedure must be followed for any Nexto Series module. First the module lower part, which is used as a guide for the correct insertion, must be fit in the backplane rack, and then the guide pins are correctly placed in the right rack keyways for a specified position.
  • Page 54 4. INSTALLATION Figure 49: Backplane rack fitting movement If the user follows the described procedures correctly, the module will have been perfectly connected to the bus, as presented on figure below. Figure 50: Module Correctly Placed in the Backplane Rack The module mustn’t be connected to the rack any other way.

  • Page 55: Modules Removal

    Figure 51: Wrong Insertion Way 4.2.3. Modules Removal The following example shows a Nexto Series generic module, this procedure must be followed for any Nexto Series module. First the fixation lock must be pressed (1), in order to unlock the module from the bus, then it must be rotate as shown on figure below(2).

  • Page 56: I/O Modules

    Figure 53: Module being Removed from the Backplane Rack 4.2.4. I/O Modules The Nexto Series I/O modules have some specific features described in this subtitle. There’re two different types of I/O modules: modules that use one rack slot and modules that use two rack slots. In this subtitle the modules that use one rack slot will be called simple width and the modules that use two rack slots will be called double width modules.

  • Page 57: Frontal Cover

    4. INSTALLATION 4.2.4.1. Frontal cover I/O modules have a frontal cover which has as main objective to protect the I/O connectors. Besides, the frontal cover has other functions which are described throughout the I/O Modules item. ATTENTION: The Nexto Jet I/O modules do not have a frontal cover. To access the I/O connector the frontal cover must be opened pulling its lower extremity.

  • Page 58: I/O Connector Insertion For Nexto And Nexto Jet Modules

    4. INSTALLATION Figure 55: Frontal Cover Opened 4.2.4.2. I/O connector insertion for Nexto and Nexto Jet Modules The simple width modules have an extra feature which helps the I/O terminal block insertion, described below. In case of double width module the insertion must be executed manually. With the frontal cover opened, the terminal block must be inserted partially in the module, taking care to insert it in the right position.
  • Page 59 4. INSTALLATION Figure 56: Closing the Frontal Cover At closing the frontal cover the I/O connector block is inserted in the module. The movement must be done all the way down until the cover is in the final position, as presented on figure below.
  • Page 60 4. INSTALLATION Figure 57: Module with the Frontal Cover Closed The Nexto Jet modules have a different condition to insert the connector in the module, because there is no frontal cover that assists to fit the connector. The appropriately insertion of the connector in the Nexto Jet modules it is fitting the lower position of the connector according figure below and then the upper part of the connector.

  • Page 61: I/O Connector Block Removal For Nexto And Nexto Jet Modules

    4.2.4.3. I/O connector block removal for Nexto and Nexto Jet Modules Nexto Series I/O modules have a feature to help the connector block removal, which is described below. As described previously, to open the frontal cover, it’s necessary to pull it by its lower part. When the I/O connector block must be removed, it’s necessary to execute the same opening movement besides pressing the connector block extraction lever...
  • Page 62 4. INSTALLATION Figure 59: Movement to Remove the I/O Connector Block Nexto Modules After the described movement, the I/O connector block is partially removed, simplifying the rest of its extraction. Such functionality is available both for the simple width modules as for the double width modules. In case of double width modules, each I/O connector has its own extraction lever.
  • Page 63 4. INSTALLATION Figure 60: I/O Connector Block Removal Nexto Modules The removal of Nexto Jet module connector has a different procedure, once that there is no frontal cover with extraction lever. So to remove the connector from the Nexto Jet modules should be made a movement as shown in figure below, using the wire-holder as an assistant to disconnect the lower part of the connector from the module and after that remove the connector completely.

  • Page 64: I/O Connector Block

    4.2.4.5. I/O module labels 4.2.4.5.1. Identification number and description Nexto Series I/O modules have a frontal label, which has two functions: allow the user to identify and describe each module and indicate on a short way its installation diagram. When the I/O modules frontal cover is closed, its identification number and description is visible, as shown on figure below.

  • Page 65: Installation Diagram

    4. INSTALLATION Figure 62: Module Identification 4.2.4.5.2. Installation Diagram At opening the I/O frontal covers, the module installation diagram becomes visible, as presented on figure below.
  • Page 66 The numbers on the left indicate the connector block pin number, e.g. on the figure on the left the pins 1, 2 and 3 are indicated. This symbol indicates a load which is being activated by a Nexto Series module output point.

  • Page 67: Label Insertion And Removal

    Series module. This symbol indicates a resistance or a RTD sensor (Resistance temperature detector) connected in an analog input of Nexto Series module. This symbol indicates that exist options to connect an input or output, according with the Nexto Series module characteristics.
  • Page 68 4. INSTALLATION Figure 64: Label (1) Figure 65: Label (2) Figure 66: Label (3) Care must be taken for a little lock existent in the frontal cover inner part. The label removal is only possible when it is directed over the lock. Besides, at inserting it again, the label must be placed over the frontal cover side locks in order to remain fixed.

  • Page 69: Rack Connector Cover

    4. INSTALLATION Figure 67: Label Fixation Locks 4.2.5. Rack Connector Cover The connector cover must be used on the not used rack positions for protection against undesirable contacts and dust. 4.2.5.1. Rack Connector Cover Insertion The connector cover must be placed on the connector starting by the lower part and finishing by the upper part, pressing it until it’s completely fit, as presented on Figure 68.

  • Page 70: Rack Connector Cover Removal

    4. INSTALLATION Figure 68: Rack Connector Cover Insertion 4.2.5.2. Rack Connector Cover Removal To remove the connector cover one must just pull it by its upper rim, as shown on Figure 69.

  • Page 71: Electric Installation

    4. INSTALLATION Figure 69: Rack Connector Cover Removal 4.2.6. Electric Installation DANGER: At executing any installation in an electric panel, certify if the panel general power source is OFF. 4.2.7. Spring-Connectors This type of connector has a fixation system based on a high reliability spring even under vibration subjected environment (Figure and Figure 71).
  • Page 72 4. INSTALLATION Figure 70: Spring Connection Power Supply Module...

  • Page 73: Cable Insertion

    4. INSTALLATION Figure 71: Spring Connection I/O Module Figure 72: Spring Connection To assembly the cable in the connector: Insert the screwdriver in the terminal lever to open the spring Insert the cable terminal in the connector Remove the screwdriver to close the connector 4.2.7.1.

  • Page 74: 6-Pin Connector Block - Nx9401

    4. INSTALLATION 4.2.7.2. 6-Pin Connector Block – NX9401 It’s recommended the use of 2.5 mm cables. Each cable must be cut with a difference of 4 mm as indicated on Figure 73. Each pin must have 2.5 mm terminals crimped. ATTENTION: Use terminal with length A = 12 mm to guarantee the effective contact (see Figure 74) 4.2.7.3.

  • Page 75: Cable Assembly

    4. INSTALLATION Figure 73: Cable Cut Figure 74: Terminal 4.2.7.8. Cable assembly Insert the terminals in the connector block starting by pin 10, for the 10-pin connector block, or by pin 20, for 20-pin connector block. Certify that the terminals are completely inserted in the connector and correctly connected. 4.2.7.9.

  • Page 76: Nexto Jet Solution

    4. INSTALLATION Figure 75: Nexto Cabling ID and Fixation To identify the wiring: (A) Use numbered wiring or cables with numbered conductors (B) Use Conexel identifier WKM 8/30 (PN: 1631910000) for cable identification (C) Fix with plastic tie the identifier of the wires on the support (wire holder) located at the bottom of the connector 4.2.7.9.2.

  • Page 77: Cable Removal

    4. INSTALLATION Figure 76: Nexto Jet Cabling ID and Fixation To identify the wiring: (A) Use numbered wiring or cables with numbered conductors (B) Use Conexel identifier WKM 8/30 (PN: 1631910000) for cable identification, attaching the wires with plastic tie (C) Do not attach anything to the support (wire holder) located at the bottom of the connector 4.2.7.10.

  • Page 78: Connections

    4. INSTALLATION 4.2.8. Connections The correct fixation of the CPUs and system modules cables guarantee the equipment security and its correct functioning. Therefore, the following points must be checked: The cables close to the panel connectors must be connected securely and tight The system parts power and ground connectors must be tight and well connected, allowing good current conduction The ground connection from the equipment to the panel must be tight and well dimensioned, to guarantee good grounding and noise immunity...

  • Page 79: Maintenance

    LEDs to LCDs. The documentation of each module indicates all available diagnostics. In this document the OTD functionality is described, which is within all Nexto Series, except the modules that make part of Nexto Jet solution. Such functionality allows the tag access, diagnostics and description of all modules and I/O points through the diagnostics keys, module display and CPU display.
  • Page 80 5. MAINTENANCE Figure 77: CPU Diagnostics Visualization As presented on Figure both the tag and the list of all module’s active diagnostics are shown twice on the CPU display, then the module goes off the diagnostics mode and the CPU display starts to indicate CPU information again. It’s possible to identify that a module is in diagnostic mode when both display segments indicate on Figure are blinking.

  • Page 81: I/O Points Access

    5. MAINTENANCE Figure 78: Module display 5.1.1.2. I/O points access After going to diagnostics mode, the next short press on the module diagnostic switch selects the first I/O point. On this moment, the display erases the active individual diagnostics indication (previously explained) and indicates which I/O point is selected.

  • Page 82: Short Press And Long Press

    5. MAINTENANCE ATTENTION: When use the function ETD – Electronic Tag on Display, Diagnostic Explorer or Web Server to visualize the tag of I/O points, the tag’s name will be truncated in the 24 first char- acters right after the string “Application.” of the tag’s name. I.E. For the tag “Applica- tion.UserPrg.MyTest.ON”, only the string “UserPrg.MytTest.ON”...

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