Page 1 Machine Automation Controller NX-series NX502 CPU Unit Hardware User’s Manual NX502-100 CPU Unit W629-E1-01...
Page 2 Moreover, because OMRON is constantly striving to improve its high-quality products, the information contained in this manual is subject to change without notice. 3. Every precaution has been taken in the preparation of this manual. Nevertheless, OMRON assumes no responsi- bility for errors or omissions.
Page 3: Intended Audience
Introduction Introduction Thank you for purchasing an NX-series CPU Unit. This manual contains information that is necessary to use the NX-series CPU Unit. Please read this manual and make sure you understand the functionality and performance of the NX-series CPU Unit before you attempt to use it in a control system.
Page 4: Relevant Manuals
Relevant Manuals Relevant Manuals The following table provides the relevant manuals for the NX-series CPU Units. Read all of the man- uals that are relevant to your system configuration and application before you use the NX-series CPU Unit. Most operations are performed from the Sysmac Studio Automation Software. Refer to the Sysmac Studio Version 1 Operation Manual (Cat.
Page 5 Relevant Manuals Manual Basic informa- tion Purpose of use Testing operation and debugging Using motion control Using EtherCAT Using EtherNet/IP Using OPC UA Using FINS Using the database connection service Learning about error management and cor- rections Maintenance Using motion control Using EtherCAT Using EtherNet/IP Refer to the NJ/NX-series Troubleshooting Manual (Cat.
Page 6: Manual Structure
Manual Structure Manual Structure Page Structure The following page structure is used in this manual. Level 1 heading 4 Installation and Wiring Level 2 heading Level 3 heading Mounting Units Level 2 heading Gives the current Level 3 heading headings. 4-3-1 Connecting Controller Components The Units that make up an NJ-series Controller can be connected simply by pressing the Units together...
Page 7: Special Information
Manual Structure Special Information Special information in this manual is classified as follows: Precautions for Safe Use Precautions on what to do and what not to do to ensure safe usage of the product. Precautions for Correct Use Precautions on what to do and what not to do to ensure proper operation and performance. Additional Information Additional information to read as required.
Page 8 Manual Structure NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 9: Sections In This Manual
Sections in this Manual Sections in this Manual Introduction to NX-series Controllers System Configuration Configuration Units Designing the Power Supply System Installation and Wiring Troubleshooting Inspection and Maintenance Appendices Index NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 10: Table Of Contents
CONTENTS CONTENTS Introduction ......................1 Intended Audience............................1 Applicable Products ............................1 Relevant Manuals..................... 2 Manual Structure...................... 4 Page Structure..............................4 Special Information ............................5 Precaution on Terminology ..........................5 Sections in this Manual ................... 7 Terms and Conditions Agreement................ 12 Warranty, Limitations of Liability ........................12 Application Considerations ..........................13 Disclaimers ..............................13 Statement of security responsibilities for assumed use cases and against threats........14...
Page 11 CONTENTS 1-3-1 Overall Procedure ........................1-15 1-3-2 Procedure Details........................1-16 Section 2 System Configuration Basic System Configuration ....................2-2 2-1-1 EtherCAT Network Configuration ....................2-3 2-1-2 NX Unit Configuration .........................2-4 2-1-3 X Bus Unit Configuration ......................2-5 Connecting to the Sysmac Studio..................2-8 Network Configuration ......................2-9 Section 3 Configuration Units CPU Units ..........................3-2...
Page 12 CONTENTS Section 5 Installation and Wiring Processing at Power ON and Power OFF................5-2 5-1-1 Power ON Operation ........................5-2 5-1-2 Power OFF Operation .........................5-3 5-1-3 Resetting the Controller from the Sysmac Studio ...............5-5 Fail-safe Circuits ........................5-6 Mounting and Removing Units .....................5-8 5-3-1 Installation in a Control Panel .....................5-8 5-3-2...
Page 13 CONTENTS A-2-1 NX-series NX502 CPU Unit ....................... A-3 A-2-2 End Cover ..........................A-4 A-2-3 SD Memory Card ........................A-4 List of Terminal Block Models ..................... A-5 A-3-1 Model Notation ........................... A-5 A-3-2 List of Terminal Block Models..................... A-5 Version Information ......................A-7 Support Functions of the CPU Units and Restrictions on the NX Units......
Page 14: Terms And Conditions Agreement
Omron’s exclusive warranty is that the Products will be free from defects in materials and work- manship for a period of twelve months from the date of sale by Omron (or such other period ex- pressed in writing by Omron). Omron disclaims all other warranties, express or implied.
Page 15: Application Considerations
WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY. Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted. Application Considerations...
Page 16: Statement Of Security Responsibilities For Assumed Use Cases And Against Threats
Product. Errors and Omissions Information presented by Omron Companies has been checked and is believed to be accurate; how- ever, no responsibility is assumed for clerical, typographical or proofreading errors or omissions. Statement of security responsibilities for assumed use cases and...
Page 17: Safety Precautions
Safety Precautions Safety Precautions Definition of Precautionary Information The following notation is used in this manual to provide precautions required to ensure safe usage of the NX-series CPU Unit. The safety precautions that are provided are extremely important for safety. Always read and heed the information provided in all safety precautions.
Page 18: Warning
Safety Precautions WARNING WARNING During Power Supply Do not touch any of the terminals or terminal blocks while the power is being supplied. Doing so may result in electric shock. Do not attempt to take any Unit apart. In particular, high-voltage parts are present in the Power Supply Unit while power is supplied or immediately after power is turned OFF.
Page 19 Safety Precautions Unintended outputs may occur when an error occurs in variable memory. As a counter- measure for such problems, external safety measures must be provided to ensure safe operation of the system. Provide measures in the communications system and user program to ensure safety in the overall system even if errors or malfunctions occur in data link communications or remote I/O communications.
Page 20 Safety Precautions Security measures to prevent unauthorized access Take the following measures to prevent unauthorized access to our products. • Install physical controls so that only authorized personnel can access control sys- tems and equipment. • Reduce connections to control systems and equipment via networks to prevent ac- cess from untrusted devices.
Page 21: Cautions
Safety Precautions Cautions Caution Application Do not touch any Unit when power is being supplied or immediately after the power supply is turned OFF. Doing so may result in burn injury. Wiring Be sure that all terminal screws and cable connector screws are tightened to the tor- que specified in the relevant manuals.
Page 22 Safety Precautions EtherCAT Communications If the cable redundancy function is enabled, always write a program to confirm that the network is in the cable redundancy status. If the program is not written, you cannot check that the network is not in the cable redundancy status due to a disconnection on the ring topology.
Page 23: Precautions For Safe Use
Precautions for Safe Use Precautions for Safe Use Transporting and Disassembly • Do not attempt to disassemble, repair, or modify any Units. Doing so may result in malfunction or fire. • Do not drop any Unit or subject it to abnormal vibration or shock. Doing so may result in Unit mal- function or burning.
Page 24 Precautions for Safe Use Restricted region (shaded portion) • The End Cover has a metal portion and is heavier than it looks. Be careful not to drop it when han- dling. Installation • Always connect to a ground of 100 Ω or less when installing the Units. Wiring •...
Page 25 Precautions for Safe Use • When you insert a flat-blade screwdriver into a release hole on a screwless clamping terminal block, press it down with a force of 30N or less. Applying excessive force may damage the terminal block. • Do not incline or twist the flat-blade screwdriver while it is in a release hole on a screwless clamping terminal block.
Page 26 Precautions for Safe Use External communications are also not performed during startup. • Configure the external circuits so that the power supply to the control system turns ON only after the power supply to the Controller has turned ON. If the power supply to the Controller is turned ON after the control power supply, temporary errors may result in incorrect control system signals be- cause the output terminals on Output Units may momentarily turn ON when power supply is turned ON to the Controller.
Page 27 Precautions for Safe Use The power supply circuit in the CPU Unit may continue to supply power to the Controller for a few seconds after the power supply turns OFF. The POWER indicator is lit during this time. Confirm that the POWER indicator is not lit before you perform any of the above. Operation •...
Page 28 Precautions for Safe Use The Battery is not mounted when the product is at factory setting. The clock data is retained by the built-in capacitor. The capacitor is charged while the power is supplied and discharged while the power is not supplied. If the power OFF time rate is high, the clock data is initialized and malfunc- tions may occur in the program for which the clock data is used.
Page 29 Precautions for Safe Use • All related EtherNet/IP nodes are reset when you transfer settings for the built-in EtherNet/IP port (including IP addresses and tag data links settings). The settings can only be enabled after the re- set. Confirm that the system will not be adversely affected by resetting nodes before you transfer the settings.
Page 30 Precautions for Safe Use At the location in cable redundancy state, only the relevant slave stops communications. • I/O data communications of NX bus are not always established immediately after the power supply is turned ON. Use the system-defined variables and the EtherCAT Coupler Unit device variables in the user program to confirm that I/O data communications are established before attempting control operations.
Page 31 Precautions for Safe Use • If you make any changes in the Detailed Settings Area of the Axis Basic Settings Display of the Sysmac Studio, make sure that the devices or machines perform the expected operation before you start actual operation. If the relationship between the functions of the Motion Control Function Module and the EtherCAT slave process data that is assigned to the axes is not correct, the devices or machines may perform unexpected operation.
Page 32 Precautions for Safe Use Restoring Data • You cannot back up, restore, or compare some or all of the settings for certain slaves and Units. Also, you cannot back up, restore, or compare data for disabled slaves or Units. After you restore data, sufficiently confirm that operation is correct before you start actual operation.
Page 33 Precautions for Safe Use Unit Replacement • Make sure that the required data, including the user program, configurations, settings, and varia- bles, is transferred to a CPU Unit that was replaced and to externally connected devices before re- starting operation. Be sure to include the tag data link settings and routing tables, which are stored in the CPU Unit.
Page 34: Precautions For Correct Use
Precautions for Correct Use Precautions for Correct Use Storage and Installation • Follow the instructions in this manual to correctly perform installation. • Do not operate or store the Controller in the following locations. Doing so may result in burning, in operation stopping, or in malfunction.
Page 35 Precautions for Correct Use Wiring • Do not allow foreign matter to enter the openings in the Unit. Doing so may result in Unit burning, electric shock, or failure. • Do not allow wire clippings, shavings, or other foreign material to enter any Unit. Otherwise, Unit burning, failure, or malfunction may occur.
Page 36 Precautions for Correct Use Transferring Programs • If you use the program transfer from SD Memory Card, set to enter the password for each execution to prevent an unexpected program transfer. Replacing Slaves and Units • If you replace a slave or Unit, refer to the operation manual for the slave or Unit for information on the data required for individual slaves or Units and redo the necessary settings.
Page 37 If there is a corrupted file in the SD Memory Card, the file is automatically deleted by the restoration function when the power supply is turned ON. • If you use an OMRON SD Memory Card, the end of the life of the SD Memory Card can be detected in the following ways.
Page 38 It is recommended that you erase the data on your responsibility before disposing of or transferring the device. Omron shall not be liable for any loss, damage, or other expenses incurred directly or indirectly in the event of any information leakage due to disposal or transfer.
Page 39: Regulations And Standards
Conformance to EMC and Electrical Safety Regulations Concepts OMRON products are industrial electrical devices that are incorporated into various types of machines and manufacturing equipment. The products conform to relevant standards so that the machines and equipment incorporating the OMRON products can comply with EMC and Electrical Safety Regula- tions more easily.
Page 40: Conformance To Kc Certification
Software Licenses and Copyrights This product incorporates certain third party software. The license and copyright information associat- ed with this software is available at http://www.fa.omron.co.jp/nj_info_e/. NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 41: Versions
Versions Versions Hardware revisions and unit versions are used to manage the hardware and software in NX-series Units and EtherCAT slaves. The hardware revision or unit version is updated each time there is a change in hardware or software specifications. Even when two Units or EtherCAT slaves have the same model number, they will have functional or performance differences if they have different hardware revisions or unit versions.
Page 42 Versions Checking Unit Versions with the Sysmac Studio l Checking the Unit Version of a Unit You can use the Production Information while the Sysmac Studio is online to check the unit ver- sion of a Unit. You can do this for the CPU Unit and NX Units on the CPU Rack. Use the following procedure to check the unit version.
Page 43: Unit Versions Of Cpu Units And Sysmac Studio Versions
Versions l Changing Information Displayed in Production Information Dialog Box Click the Show Detail or Show Outline Button at the lower right of the Production Information Dialog Box. The view will change between the Production information details and outline. Outline View Detail View Unit Versions of CPU Units and Sysmac Studio Versions The functions that are supported depend on the unit version of the NX-series CPU Unit.
Page 44: Related Manuals
Related Manuals Related Manuals The following manuals are related. Use these manuals for reference. Manual name Cat. No. Model Application Description NX-series W629 NX502-££££ Learning the basic An introduction to the entire NX502 NX502 CPU Unit specifications of the system is provided along with the fol- Hardware NX502 CPU Units, lowing information on the CPU Unit.
Page 45 Related Manuals Manual name Cat. No. Model Application Description NJ/NX-series W506 NX701-££££ Using the built-in Information on the built-in CPU Unit NX502-££££ EtherNet/IP port on EtherNet/IP port is provided. NX102-££££ an NJ/NX-series Information is provided on the basic ™ Built-in EtherNet/IP Port NX1P2-££££...
Page 46 Related Manuals Manual name Cat. No. Model Application Description NX-series W521 NX-ID££££ Learning how to use Describes the hardware, setup meth- NX Units NX-IA££££ NX Units. ods, and functions of the NX Units. User’s Manual NX-OC££££ Manuals are available for the follow- NX-OD££££...
Page 47: Terminology
Terminology Terminology Terminology Description One of the attributes of a variable. This attribute allows the user to specify what is assigned to a variable. An I/O port or an address in memory used for CJ-series Units can be specified. CJ-series Unit Any of the CJ-series Units that can be used with an NJ-series Controller.
Page 48 Terminology Terminology Description X Bus Function Module One of the function modules. This function module controls X Bus Units mounted to the left side of the CPU Unit. X Bus Units Units that can connect to the X Bus. upload To transfer data from the Controller to the Sysmac Studio with the synchroniza- tion operation of the Sysmac Studio.
Page 49 Terminology Terminology Description Controller The range of devices that are directly controlled by the CPU Unit. In the NX-series System, the Controller includes the CPU Rack and EtherCAT slaves (including general-purpose slaves and Servo Drives). In the NJ-series System, the Controller includes the CPU Rack, Expansion Racks, and EtherCAT slaves (including general-purpose slaves and Servo Drives).
Page 50 Terminology Terminology Description absolute encoder home offset This data is used to restore in the CPU Unit the actual position of a Servo Drive with an absolute encoder. The offset is the difference between the command po- sition after homing and the absolute data that is read from the absolute encoder. project unit version A unit version to be set for the project.
Page 51 When you specify to not initialize the values when the user program is trans- ferred instruction The smallest unit of the processing elements that are provided by OMRON for use in POU algorithms. There are ladder diagram instructions (program inputs and outputs), function in- structions, function block instructions, and ST statements.
Page 52: Revision History
Revision History Revision History A manual revision code appears as a suffix to the catalog number on the front and back covers of the manual. Cat. No. W629-E1-01 Revision code Revision Date Revised content code April 2023 Original production NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 53: Introduction To Nx-Series Controllers
Introduction to NX-series Control- lers This section describes the features, basic system configuration, specifications, and overall operating procedure of an NX-series Controller NX502. The NX-series Controller ................1-2 1-1-1 Features ......................1-3 1-1-2 Introduction to the System Configurations ............1-6 Specifications ....................
Page 54: The Nx-Series Controller
They provide the safety, relia- bility, and maintainability that are required of industrial controllers. The NJ/NX-series Controllers provide the functionality of previous OMRON PLCs, and they also pro- vide the functionality that is required for motion control. Synchronized control of I/O devices on high- speed EtherCAT can be applied to safety devices, vision systems, motion equipment, discrete I/O, and more.
Page 55: Features
1 Introduction to NX-series Controllers 1-1-1 Features Hardware Features l Standard-feature EtherCAT Control Network Support All CPU Units provide an EtherCAT master port for EtherCAT communications. EtherCAT is an advanced industrial network system that achieves faster, more-efficient communi- cations. It is based on Ethernet. Each node achieves a short fixed communications cycle time by transmitting Ethernet frames at high speed.
Page 56 1 Introduction to NX-series Controllers l NX-series Units Connectable The CPU Unit can be connected with up to 63 NX Units including NX-series Digital I/O Units, Ana- log I/O Units, and other I/O Units. l Battery-free Operation The following data (other than the clock data) is retained in the built-in non-volatile memory. •...
Page 57 1 Introduction to NX-series Controllers l Programming Languages Based on the IEC 61131-3 International Standard The NJ-series Controllers support language specifications that are based on IEC 61131-3. To these, OMRON has added our own improvements. Motion control instructions that are based on ® PLCopen standards and an instruction set (POUs) that follows IEC rules are provided.
Page 58: Introduction To The System Configurations
1 Introduction to NX-series Controllers 1-1-2 Introduction to the System Configurations The NX-series Controller NX502 supports the following system configurations. Basic System Configurations The NX-series Controller NX502 basic configurations include the EtherCAT network configuration, NX Unit configuration, X Bus Unit configuration, and the Support Software. •...
Page 59 1 Introduction to NX-series Controllers Support Software X Bus Unit NX Unit configuration configuration NX-series NX502 NX-series NX502 CPU Unit CPU Unit Built-in EtherNet/IP port 1 POWER EtherNet/IP PORT2 Built-in EtherNet/IP port 2 Built-in EtherCAT port X Bus Units X Bus Units NX Units CPU Rack CPU Rack...
Page 60 NX-series Communications CPU Unit port 2 Interface Unit Built-in EtherCAT Serial communications devices port Serial Communica- CompoNet Master Unit tions Unit DeviceNet Unit General-purpose components or OMRON components EtherCAT Field Level General-purpose slaves Vision RS-232C, EtherCAT Servo Drives Systems Slave Terminal...
Page 61 1 Introduction to NX-series Controllers Configuration software Application CX-Protocol The CX-Protocol is used for protocol macros with the CJ-series Serial Communications Units. CX-Designer The CX-Designer is used to create screens for NS-series PTs. If the NJ/NX-series Controller is a target device, you may also use Sysmac Studio version 1.10 or higher. Use the Network Configurator if a CS/CJ-series PLC operates as the originator device.
Page 62: Specifications
1 Introduction to NX-series Controllers Specifications This section gives the specifications of the NX-series NX502 CPU Units. NX502- Item 15££ 14££ 13££ Process- Instruction execu- LD Instruction 0.53 ns or more ing time tion times Math instructions (for long real data) 3.3ns ns or more Program- Size...
Page 63 1 Introduction to NX-series Controllers NX502- Item 15££ 14££ 13££ Override factors 0.00%, or 0.01% to 500.00% Built-in Number of ports EtherNet/I Physical layer 10BASE-T, 100BASE-TX, 1000BASE-T P port Frame length 1,514 bytes max. Media access method CSMA/CD Modulation Baseband Topology Star Baud rate...
Page 64 1 Introduction to NX-series Controllers NX502- Item 15££ 14££ 13££ SQLServer by Micro- 2019 soft Oracle Database by 19c, 21c Oracle Supported DB MySQL Community versions Edition by Oracle PostgreSQL by Post- greSQL Global Devel- opment Group Number of DB Connections (Number of databases that can be connected at the same time) SQLServer by Micro-...
Page 65 1 Introduction to NX-series Controllers NX502- Item 15££ 14££ 13££ Embedded 2017 UA Server Profile Support profile/Model PLCopen Information Model Default Endpoint/Port opc.tcp://192.168.250.1:4840/ Maximum number of sessions (Client) Maximum number of Monitored Items 2,000 per server Sampling rate of Monitored Items (ms) , 50, 100, 250, 500, 1,000, 2,000, 5,000, 10,000 Maximum number of Subscriptions per server...
Page 66 1 Introduction to NX-series Controllers NX502- Item 15££ 14££ 13££ Input: 11,472 bytes Maximum process data size Output: 11,472 bytes Input: 1,434 bytes Maximum process data size per slave Output: 1,434 bytes Primary periodic task Communications cycle 250 μs to 8 ms (in 250-μs increments) Sync jitter 1 μs max.
Page 67: Overall Operating Procedure For The Cpu Unit
1 Introduction to NX-series Controllers Overall Operating Procedure for the CPU Unit This section gives the overall operating procedure for the NX502 CPU Unit and then describes it in more detail. 1-3-1 Overall Procedure The overall procedure to use an NX502 CPU Unit is given below. STEP 1.
Page 68: Procedure Details
1 Introduction to NX-series Controllers 1-3-2 Procedure Details STEP1. Software Design Step Description Reference • Step 1-1 External I/O devices and Unit configuration NJ/NX-series CPU Unit • Designing I/O and Software User’s Manual Refresh periods for external devices Processing • (Cat.
Page 69 1 Introduction to NX-series Controllers 1) Creating the Slave, EtherCAT Tab Page NJ/NX-series CPU Unit 1. Creating the slave configuration, NX NX Unit, and X Bus CPU and Expan- Software User’s Manual Unit configuration, and X Bus Unit Unit Configurations sion Racks Tab (Cat.
Page 70 1 Introduction to NX-series Controllers Step 2-3 Programming • 1) Registering Varia- Registering the variables used by Global Variable Ta- Sysmac Studio Version 1 bles ble Editor Operation Manual (Cat. No. more than one POU in the global vari- able table with Sysmac Studio Local Variable Table W504) •...
Page 71 1 Introduction to NX-series Controllers • 3) Wiring I/O Wiring I/O for NX Units Manuals for the specific NX • Units Wiring an X Bus Unit Manuals for the specific X Bus Units • Wiring I/O to EtherCAT slaves Operation manuals for the EtherCAT slaves 5-4 Wiring on page 5-36 •...
Page 72 1 Introduction to NX-series Controllers 1-20 NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 73: System Configuration
System Configuration This section describes the basic system configuration used for NX-series Controllers. Basic System Configuration ................. 2-2 2-1-1 EtherCAT Network Configuration ..............2-3 2-1-2 NX Unit Configuration..................2-4 2-1-3 X Bus Unit Configuration ................. 2-5 Connecting to the Sysmac Studio ..............2-8 Network Configuration...................
Page 74: Basic System Configuration
2 System Configuration Basic System Configuration An NX-series Controller NX502 supports the following two types of configurations. • Basic Configuration The basic configurations include the CPU Unit and the Configuration Units that are controlled direct- ly by the CPU Unit. The followings are basic configurations. a) EtherCAT network configuration b) NX Unit configuration c) X Bus Unit configuration...
Page 75: Ethercat Network Configuration
2 System Configuration 2-1-1 EtherCAT Network Configuration The EtherCAT network configuration consists of an NX-series NX502 CPU Unit, an End Cover, and the EtherCAT slaves. You use the built-in EtherCAT port on the NX-series NX502 CPU Unit to connect EtherCAT slaves. NX-series CPU Rack NX502 CPU Unit...
Page 76: Nx Unit Configuration
NX Units. face Unit For information on the most recent lineup of Load Cell Input Unit NX Units, refer to NX-series catalogs or OM- RON websites, or ask your OMRON represen- tative. NJ/NX-series SD Memory Card Install as required.
Page 77: Bus Unit Configuration
2 System Configuration Configuration Units l NX-series NX502 CPU Unit The Unit that serves as the center of control for a Machine Automation Controller. It executes tasks, refreshes I/O for other Units and slaves, etc. In the NX-series, this type of Units is called NX502 CPU Unit.
Page 78 EtherNet/IP Unit Up to four Units can be mounted to each CPU Rack. For information on the latest lineup of X Bus Units, refer to the relevant catalogs or OMRON websites, or ask your OMRON representative. NJ/NX-series SD Memory Card Install as required.
Page 79 2 System Configuration Refer to 3-2 SD Memory Cards on page 3-14 for the models and specifications of individual SD Memory Cards. NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 80: Connecting To The Sysmac Studio
2 System Configuration Connecting to the Sysmac Studio Connect the NX-series NX502 CPU Unit and the Sysmac Studio through EtherNet/IP. Refer to 3-6-2 Connection on page 3-18 for information on how to make the connection between the NX-series NX502 CPU Unit and the Sysmac Studio. NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 81: Network Configuration
NX-series Communications CPU Unit port 2 Interface Unit Built-in EtherCAT Serial communications devices port Serial Communica- CompoNet Master Unit tions Unit DeviceNet Unit General-purpose components or OMRON components EtherCAT Field Level General-purpose slaves Vision RS-232C, EtherCAT Servo Drives Systems Slave Terminal...
Page 82 2 System Configuration Connection Connection method Devices Servo Drives, general-purpose slaves Use the built-in EtherCAT port. and Vision Systems Ethernet communications devices Use the built-in Ethernet/IP port (1 or 2) or a port on an EtherNet/IP Unit. Serial communications devices Mount the following Units and use RS-232C port or RS-422A/485 ports.
Page 83 Configuration Units This section describes configuration devices in the NX-series Controller configuration. CPU Units......................3-2 3-1-1 Models and Specifications................3-2 3-1-2 Part Names and Functions................3-4 3-1-3 DIP Switch....................... 3-5 3-1-4 Operation Status Indicators................3-6 3-1-5 Terminal Blocks ....................3-9 3-1-6 Battery ......................
Page 84: Cpu Units
3 Configuration Units CPU Units This section describes the models and specifications of the CPU Units as well as the names and func- tions of the parts. 3-1-1 Models and Specifications This section describes the outline of the CPU Unit specifications. The electrical and mechanical speci- fications of the CPU Unit are also given.
Page 85 3 Configuration Units Item Specification I/O Power Supply to NX Units Not provided X Bus Unit power supply 50 W max. Power supply to the X capacity Bus Unit power supply No isolation: between the Unit power supply ter- Isolation method minal and X Bus Unit power supply RJ45 for Ethernet Communications ×...
Page 86: Part Names And Functions
3 Configuration Units 3-1-2 Part Names and Functions This section explains parts of the CPU Unit and their functions. (A) (B) (F) (G) Letter Name Function SD Memory Card connector Connects the SD Memory Card to the CPU Unit. SD Memory Card power supply switch Turns OFF the power supply so that you can remove the SD Memory Card.
Page 87: Dip Switch
3 Configuration Units Letter Name Function ID information indication Shows the ID information of the CPU Unit. 3-1-8 ID Information Indication on page 3-12 Built-in EtherNet/IP port (port 1) Connects the Ethernet with an Ethernet cable. Use port 1 to perform OPC UA communications. Built-in EtherNet/IP port (port 2) Built-in EtherCAT port (port 3) Connects the EtherCAT with an Ethernet cable.
Page 88: Operation Status Indicators
3 Configuration Units DIP switch Function Meaning Reference manual You can start the Unit in PRO- NJ/NX-series Trouble- Safe Mode GRAM mode when the power shooting Manual (Cat. is turned ON. Use the Safe No. W503) Mode if you do not want to ex- ecute the user program imme- diately after the power is turned ON, or if it is difficult to...
Page 89 3 Configuration Units Indicator Color Status Meaning POWER Green Lit. Power is ON. Not lit. Power is not ON. Or, the power supply voltage is outside the al- lowable voltage range. Green Lit. The CPU Unit is in normal operation in RUN mode. (The user program is in execution.) Flashing The CPU Unit is starting (entering RUN mode or PROGRAM...
Page 90 3 Configuration Units Indicator Color Status Meaning Yellow Flashing SD Memory Card access in progress. BUSY Not lit. SD Memory Card access not in progress. Refer to the NJ/NX-series CPU Unit Software User’s Manual (Cat. No. W501) for details on backing up data.
Page 91: Terminal Blocks
3 Configuration Units Indicator Color Status Meaning LINK/ACT Yellow Lit. The link was established. Flashing The link is established, and data communications are in progress. Not lit. A link was not established. • The cable is not connected. • The power supply is OFF or the CPU Unit was reset. l Built-in EtherCAT (Port 3) Status Indicators These indicators show the operation status of the built-in EtherCAT port of the CPU Unit.
Page 92: Battery
3 Configuration Units Terminal Block Part Names and Functions NX-TBC082 8-terminal type Letter Name Function Terminal number indication Indicates the terminal numbers (A1 to A8 and B1 to B8). The terminal number indication is the same regardless of the number of terminals on the terminal block.
Page 93 3 Configuration Units Purpose of the Battery Mounting The battery is used to retain the clock data while the power is not supplied to the CPU Unit. The clock data is retained by the built-in capacitor whether the battery is mounted or not, but the retention period depends on the continuous power-ON time of the CPU Unit, as shown below.
Page 94: Fan
3 Configuration Units Setting for the Battery-related error detection What is af- Cause of error fected Do not use • One of the following was detected at pow- Clock data In case of clock oscillator stopping er ON. Time measurement starts from January 1st, 1970. •...
Page 95 Shows the lot number and the serial number of the CPU Unit. number DDMYY: Lot number, £: For use by OMRON, SSSS: Serial number M is 1 to 9 for January to September, X for October, Y for November, and Z for December.
Page 96: Sd Memory Cards
3 Configuration Units SD Memory Cards This section describes the models, specifications, and application of the SD Memory Cards. 3-2-1 Models and Specifications Refer to Specification of Supported SD Memory Cards, Folders, and Files in the NJ/NX-series CPU Unit Software User’s Manual (Cat. No. W501) for details. 3-2-2 Purpose You can use the SD Memory Card for the following applications.
Page 97: Power Supply-Related Units
3 Configuration Units Power Supply-related Units The following NX Units are the NX-series power supply-related Units. When configuring NX Units, you can use these Units as necessary to supply power to the NX Units. These NX Units are collectively called as the System Units. •...
Page 98: Nx Units
(D) (E) Symbol Name Function Marker attachment loca- The locations where markers are attached. OMRON markers are pre-in- tion stalled at the factory. You can also install commercially available mark- ers. NX bus connector This connector is used to connect another Unit.
Page 99: Bus Units
3 Configuration Units X Bus Units The X Bus Units are used to connect with large capacity data communications. Up to four X Bus Units can be connected to the CPU Unit. The X Bus Unit power is supplied directly from the Unit power supplied to the CPU Unit. A total of 50 W of DC power can be supplied.
Page 100: Sysmac Studio
3 Configuration Units Sysmac Studio The Sysmac Studio is a Support Software package that provides an integrated development environ- ment to design, program, debug, and maintain NJ/NX-series Controllers. This section describes the models and connecting methods of the Sysmac Studio. 3-6-1 Model Numbers The model numbers of the Sysmac Studio are given in the following table.
Page 101 3 Configuration Units Additional Information The Sysmac Studio cannot connect online to an NJ/NX-series CPU Unit in the following type of configuration. • If the built-in EtherNet/IP port is not used, you cannot connect to an NJ/NX-series CPU Unit on an EtherNet/IP network. Example: Connection to NJ/NX-series CPU Unit Routing through an EtherNet/IP Unit or Built-in EtherNet/IP Port Sysmac Studio...
Page 102 3 Configuration Units 3-20 NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 103: Designing The Power Supply System
Designing the Power Supply Sys- This section describes how to design the power supply system for the NX-series NX502 CPU Unit. Power Supply System..................4-2 4-1-1 Unit Power Supply and I/O Power Supply............4-2 4-1-2 NX-series Power Supply-related Units ............4-4 4-1-3 X Bus Unit Power Supply ................
Page 104: Power Supply System
4 Designing the Power Supply System Power Supply System The power supply system for the CPU Rack of the NX-series NX502 CPU Unit consists of two power supply lines: one for Unit power and other for I/O power. Therefore, you need to prepare two separate external power supplies for them.
Page 105 4 Designing the Power Supply System X Bus Units (4 max.) NX Units (63 max.) Cover NX-series NX502 Internal Internal Internal Internal Internal Internal Internal CPU Unit circuits circuits circuits circuits circuits circuits circuits Internal Internal circuits power NX Unit power supply supply circuit X Bus connector...
Page 106: Nx-Series Power Supply-Related Units
For the specifications of NX-series power supply-related Units, refer to the NX-series System Units User’s Manual (Cat. No. W523). For information on the latest lineup of the NX-series power supply- related Units, refer to the relevant catalogs or OMRON websites, or ask your OMRON representative. Additional NX Unit Power Supply Unit...
Page 107 4 Designing the Power Supply System The total power consumption The total power from the NX Unit power consumption from the supply is within the NX Unit NX Unit power supply power supply capacity of the is within the NX Unit CPU Unit.
Page 108 4 Designing the Power Supply System NX Units (63 max.) Additional I/O Power Supply Unit End Cover NX-series NX502 CPU Unit NX bus connector I/O power supply I/O power supply terminals To external devices I/O power supply (24 VDC, etc.) l Additional Supply of I/O Power In the following cases, you need another Additional I/O Power Supply Unit in addition to the one inserted on the right side of the CPU Unit.
Page 109 4 Designing the Power Supply System Cover No.1 No.2 No.3 Additional Additional NX-series NX Unit NX Unit NX Unit I/O Power I/O Power NX502 CPU Unit Supply Unit Supply Unit Internal Internal circuits power supply NX Unit power supply circuit NX bus connector I/O power supply I/O power supply...
Page 110 4 Designing the Power Supply System I/O power supply voltage I/O power supply voltage 24 VDC 12 VDC Cover Additional Additional NX-series NX Unit NX Unit NX Unit I/O Power I/O Power NX502 CPU Unit Supply Unit Supply Unit Internal Internal circuits power supply...
Page 111: Bus Unit Power Supply
4 Designing the Power Supply System Cover NX-series Additional NX Unit NX Unit I/O Power Power Power NX502 CPU Unit Supply Supply Supply Unit Connec- Connec- Internal tion Unit tion Unit Internal circuits power supply NX Unit power supply circuit NX bus connector I/O power supply Unit power supply terminals...
Page 112 4 Designing the Power Supply System X Bus Units (4 max.) Cover NX-series NX502 CPU Internal Internal Internal Internal Unit circuits circuits circuits circuits Internal Internal circuits power NX Unit power supply supply circuit X Bus connector Unit power supply NX bus connector terminals Unit power supply...
Page 113: Designing The Nx Unit Power Supply System
4 Designing the Power Supply System Designing the NX Unit Power Supply System This section describes how to design the NX Unit power supply to the CPU Rack of the NX-series NX502 CPU Unit. 4-2-1 Procedure for Designing the NX Unit Power Supply System The total power consumption from the NX Unit power supply must not exceed the NX Unit power sup- ply capacity of the Unit that supplies the NX Unit power.
Page 114: Calculation Example For The Nx Unit Power Supply
4 Designing the Power Supply System l NX Unit Power Supply Capacity and Restrictions The internal power supply circuits of the CPU Unit or Additional NX Unit Power Supply Unit supply the NX Unit power to the NX Units. The NX Unit power supply capacity does not include the NX Unit power consumption of the Addi- tional NX Unit Power Supply Units.
Page 115 4 Designing the Power Supply System Additional Information Excess or insufficiency in the NX Unit power supply capacity can be easily checked when the Unit configuration is created on the CPU and Expansion Racks Tab Page on the Sysmac Stu- dio.
Page 116: Designing The I/O Power Supply System
4 Designing the Power Supply System Designing the I/O Power Supply Sys- This section describes how to design the I/O power supply to the NX Units connected to the NX-series NX502 CPU Unit. 4-3-1 I/O Power Supply Method There are the following three methods to supply the I/O power supply to the NX Units depending on the type and model of the NX Units.
Page 117: Designing The I/O Power Supply From The Nx Bus
4 Designing the Power Supply System 4-3-2 Designing the I/O Power Supply from the NX Bus Procedure for Designing the I/O Power Supply The procedure is explained under the precondition that an Additional I/O Power Supply Unit is con- nected to the right side of the CPU Unit because an NX Unit that requires the power supply from NX bus is mounted on the CPU Rack.
Page 118 4 Designing the Power Supply System 63 max. a. Total current consumption from I/O power a. Total current consumption from I/O power supply does not exceed the maximum I/O supply does not exceed the maximum I/O power supply current (NX Units with the power supply current (NX Units with the supply from external source or no supply supply from external source or no supply...
Page 119 4 Designing the Power Supply System Current consumption item Description Current consumption between the NX This is the current that is consumed between the NX Units and the connected exter- Units and the connected external de- nal devices. vices For example, this is the current consumed by a Digital Input Unit to supply power to photoelectric sensors or to turn ON the input circuits in the Digital Input Unit.
Page 120 4 Designing the Power Supply System NX-ID3317 Current Consumption Current consumption from I/O power supply + (Input current × Number of inputs used) + Total current con- sumption of connected input devices 0 mA + (6 mA × 4 points) + (50 mA × 4 points) 224 mA NX-OD3121 Current Consumption Current consumption from I/O power supply + Total load...
Page 121 4 Designing the Power Supply System • Total current consumption of I/O power supply for • The range Additional I/O the range Additional I/O Power Supply Unit 1 Power Supply Unit 2 supplies I/O power supply supplies I/O power supply (Total of (1) to (5) = 3.0 A) NX Unit NX Unit...
Page 122: Designing The I/O Power Supply From External Sources
4 Designing the Power Supply System I/O power supply voltage at (5) = I/O power supply voltage on I/O power supply terminals − Voltage drop per Unit × Number of Units passed through = 24.00 V − 0.06 V × (5 − 1 Units) = 23.76 V Design to Separate the I/O Power Supply If the I/O power supply voltages of the connected external devices are different, connect an Additional...
Page 123 4 Designing the Power Supply System • Ia: Total current consumption from the I/O power supply (A) • D: Inrush current duty • t: Inrush current pulse width (s) • T: Inrush current period (s) Irms τ 4-21 NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 124: Selecting External Power Supplies And Protective Devices
• Has double or reinforced insulation between the input and output. • Has an output voltage of 24 VDC (20.4 to 28.8 VDC). Recommended Power Supplies: S8VK-S Series (manufactured by OMRON) Calculating the Required Power Supply Capacity of the Unit Power...
Page 125 4 Designing the Power Supply System l Blocks A block consists of the Unit that supplies the NX Unit power and the range of Units to which that Unit supplies the NX Unit power. For example, in the configuration in the following figure there are two blocks in the CPU Rack: the block with the CPU Unit which contains the X Bus Unit and the block with the Additional NX Unit Power Supply Unit.
Page 126: Selecting The I/O Power Supplies
*1. Use an output voltage that is appropriate for the I/O circuits of the NX Units and the connected external devi- ces. Recommended Power Supplies: S8VK-S Series (manufactured by OMRON) Calculating the Required Power Supply Capacity of the I/O Power...
Page 127: Selecting Protective Devices
4 Designing the Power Supply System 4-4-3 Selecting Protective Devices This section describes how to select protective devices (e.g., breakers and fuses) to protect against short circuits and overcurrents in external circuits. Overcurrent is the current that flows when an excessive load is connected and one of the following ratings is exceeded.
Page 128 4 Designing the Power Supply System Current Breaking/fusing time 1 min max. 12 A 15 s max. 21 A 5 s max. 30 A 2.5 s max. Installation Locations for Protective Devices Install protective devices for the Unit power supply and I/O power supply in the locations that are shown in the following figure.
Page 129 4 Designing the Power Supply System Block that an Additional NX Unit Power Supply Block that the CPU Unit supplies Unit power supply. Unit supplies Unit power supply. Block that an Additional I/O Block that an Additional I/O Power Supply Unit 1 Power Supply Unit 2 supplies I/O power supply.
Page 130 4 Designing the Power Supply System Block that an Additional NX Unit Power Supply Unit supplies Unit power supply. Block that the CPU Unit supplies Unit power supply. Block that an Additional I/O Block that an Additional I/O Power Supply Unit 1 Power Supply Unit 2 supplies I/O power supply.
Page 131 Installation and Wiring This section describes how to install and wire the NX-series NX502 CPU Unit as well as details on installation locations. Processing at Power ON and Power OFF ............ 5-2 5-1-1 Power ON Operation ..................5-2 5-1-2 Power OFF Operation ..................5-3 5-1-3 Resetting the Controller from the Sysmac Studio ...........
Page 132: Processing At Power On And Power Off
5 Installation and Wiring Processing at Power ON and Power WARNING • Do not touch any of the terminals or terminal blocks while the power is being sup- plied. Doing so may result in electric shock. • Do not attempt to take any Unit apart. In particular, high-voltage parts are present in the Power Supply Unit while power is supplied or immediately after power is turned OFF.
Page 133: Power Off Operation
5 Installation and Wiring Process Description Data check The _RetainFail (Retention Failure Flag) system-defined variable changes to TRUE when the values of variables for which the Re- tain attribute was set to retain the values were not retained after a power interruption. Recording Power Turned ON and The Power Turned ON and Power Interrupted events are record- Power Interrupted events...
Page 134 5 Installation and Wiring Operation at Power OFF Execution of the user program is ended if a power interruption exceeds the time shown in the table below. The processing after power interruption confirmation (described below) is performed, and then the system (i.e., CPU Unit) stops. System stops.
Page 135: Resetting The Controller From The Sysmac Studio
5 Installation and Wiring Momentary power interruption time from voltage drop until recovery Voltage drop Voltage recovery DC: 20.4 V max. The CPU Unit will not interrupt Executing user program execution of user program Power OFF detection time *1. The power OFF detection time is 2 to 4 ms. Processing after Power Interruption Is Confirmed After a power interruption is confirmed, the CPU Unit performs the following processing and then stops.
Page 136: Fail-Safe Circuits
5 Installation and Wiring Fail-safe Circuits WARNING Provide safety measures in external circuits to ensure safety in the system if an ab- normality occurs due to malfunction of the CPU Unit, slaves, or Units or due to other external factors affecting operation. Not doing so may result in serious accidents due to incorrect operation.
Page 137 5 Installation and Wiring Order of Powering On and Off the Controller and Controlled Sys- Outputs from Units, such as DC Output Units, may malfunction momentarily when the Unit power sup- ply is turned ON. This may cause problems in the system if the Unit power supply is turned ON after the I/O power supply (i.e.
Page 138: Mounting And Removing Units
5 Installation and Wiring Mounting and Removing Units This section describes how to mount and remove NX-series Units. Precautions for Safe Use Always turn OFF the power supply to the Controller before you attempt any of the following. • Mounting or removing the Units •...
Page 139 5 Installation and Wiring Control panel NX-series Controller Louver l Accessibility for Operation and Maintenance • To ensure safe access for operation and maintenance, separate the Controller as much as possi- ble from high-voltage equipment and power machinery. • It will be easy to operate the Controller if it is mounted at a height of 1.0 to 1.6 m above the floor. l Improving Noise Resistance •...
Page 140 5 Installation and Wiring Mounting with the DIN Track on the Bottom Mounting with the DIN Track on the Top Track Track Mounting with the Rack Upside Down Mounting with the DIN Track Installed Vertically Installation Method in Control Panels An NX-series Controller must be mounted inside a control panel on DIN Track.
Page 141 5 Installation and Wiring Duct 50 mm min. NX502 CPU Unit DIN Track 20 mm min. Duct l Wiring Duct Example 120 mm + DIN Track offset Rack 30 mm 30 mm Mounting bracket 40 mm Other Duct device *1. It varies depending on the DIN Track to be used. Refer to Installation Dimensions on page 5-32 under 5-3-14 Assembled Appearance and Dimensions on page 5-32 for details.
Page 142: Preparations For Installation
Preparations for Installation We recommend using the following products to install the Unit on a DIN Track. Name Model Manufacturer Remarks • 35-mm DIN Track PFP-50N OMRON Corporation Length: 50 cm • Material: Aluminum • Surface treatment: Insulated • PFP-100N OMRON Corporation Length: 100 cm •...
Page 143 5 Installation and Wiring Not all of the combinations of the DIN Tracks and End Plates listed above are possible. Confirm applicability of the combinations in the following table. PFP-M CLIPFIX 35 DIN Track model (OMRON) (Phoenix Contact) PFP-50N Possible Possible PFP-100N...
Page 144: Installing The Cpu Unit
5 Installation and Wiring 15° R1.25 R1.25 l End Plate PFP-M (Two) CLIPFIX 35 (Two) 5-3-3 Installing the CPU Unit This section describes how to install the CPU Unit. 5-14 NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 145 5 Installation and Wiring Precautions for Safe Use • Do not apply labels or tape to the Unit. When the Unit is installed or removed, adhesive or scraps may adhere to the pins in the NX bus connector, which may result in malfunctions. •...
Page 146 5 Installation and Wiring DIN Track Use one screw for each three holes. • Using an NS 35/7,5 PERF or NS 35/15 PERF DIN Track Use one M6 screw for each four holes in the DIN Track. There must be a screw for each inter- val of 100 mm or less.
Page 147: Attaching Markers
Attaching Markers Markers can be attached to NX Units and their terminal blocks to identify them. The plastic markers made by OMRON are installed for the factory setting. The ID information can be written on them. Commercially available markers can also be installed.
Page 148: Installing And Connecting Nx Units
Special marker printer UM EN BLUEMARK X1 PrintJet PRO The markers made by OMRON cannot be printed on with commercially available special printers. 5-3-5 Installing and Connecting NX Units This section describes how to mount NX Units to the CPU Unit and how to connect NX Units to each other.
Page 149 5 Installation and Wiring Precautions for Safe Use • Always turn OFF the power supply before mounting the Units. If the power supply is not OFF, the Unit may result in malfunction or may be damaged. • Do not apply labels or tape to the Unit. When the Unit is installed or removed, adhesive or scraps may adhere to the pins in the NX bus connector, which may result in malfunctions.
Page 150 5 Installation and Wiring l Mounting NX Unit to CPU Unit Mount the NX Unit to the CPU Unit after removing the End Cover. From the front of the CPU Unit, engage the Unit hookup guides on the NX Unit with the Unit hookup guides on the Communication Control Unit.
Page 151: Installing And Connecting X Bus Units
5 Installation and Wiring From the front of the previously mounted NX Unit, engage the Unit hookup guides on a new Unit with the Unit hookup guides on the previously mounted NX Unit. Unit hookup guides Unit hookup guides Slide the NX Unit on the hookup guides. Press the NX Unit with a certain amount of force against the DIN Track until you hear the DIN Track mounting hook lock into place.
Page 152: Mounting The End Cover
5 Installation and Wiring Precautions for Safe Use • Always turn OFF the power supply before mounting the Units. If the power supply is not OFF, the Unit may result in malfunction or may be damaged. Precautions for Correct Use •...
Page 153: Mounting The End Plates
After you mount the Unit on the DIN Track, always secure it with End Plates at both sides. If you do not secure it, the Unit may be damaged or malfunction. l Using PFP-M (OMRON) To mount an End Plate, 1) hook the bottom of it on the bottom of the DIN Track and 2) rotate the End Plate to hook the top of it on the top of the DIN Track.
Page 154: Installing And Removing The Sd Memory Card
5 Installation and Wiring l Using CLIPFIX 35 (Phoenix Contact) To mount an End Plate, 1) hook the top of it on the top of the DIN Track and 2) rotate the Plate to hook the bottom of it on the bottom of the DIN Track. Press in until you hear the End Plate lock into place.
Page 155 • The service life may be extremely short if a non-OMRON SD Memory Card is used. Also, operation may be affected due to deterioration in writing performance. • If you use an OMRON SD Memory Card, the end of the life of the SD Memory Card can be detected in the following ways.
Page 156 5 Installation and Wiring Label Push the SD Memory Card securely into the compartment. Close the Memory Card cover. Removing the SD Memory Card Press the SD Memory Card power supply switch. SD Memory Card power supply switch 5-26 NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 157: Battery Installation
5 Installation and Wiring Press the SD Memory Card after you confirm that the SD BUSY indicator (lit while SD Memory Card access is in progress) and SD PWR indicator (lit while SD Memory Card power is sup- plied) are no longer lit. SD Memory Card The SD Memory Card will be ejected from the compartment.
Page 158 5 Installation and Wiring Battery Installation Procedure Use the following procedure to install the Battery. Precautions for Safe Use We recommend mounting or replacing the Battery with the power turned OFF to prevent the CPU Unit’s sensitive internal components from being damaged by static electricity and to pre- vent malfunctions.
Page 159: Removing Cpu Unit
5 Installation and Wiring Battery connector Connector Battery slot Press in the battery harness by twisting and close the memory card cover. Set the Battery-related error detection to Use and adjust the CPU Unit’s clock data to the current time. Refer to the Sysmac Studio Version 1 Operation Manual (Cat.
Page 160: Removing Nx Units
5 Installation and Wiring Unlock the DIN Track mounting hook. Use a flat-blade screwdriver to pull up the DIN Track mounting hook to unlocked position. At this point, be sure not to drop the CPU Unit. Remove the CPU Unit from the DIN Track. Tilt the Unit diagonally upwards and pull it up slightly, then pull it out to remove.
Page 161: Removing X Bus Units
5 Installation and Wiring Flat-blade screwdriver DIN Track mounting hook Put your fingers on the protrusions for removing multiple NX Units including the Unit to be re- moved, then pull out straight forward to remove. Protrusion for removing the Unit Protrusion for removing the Unit Precautions for Correct Use •...
Page 162: Assembled Appearance And Dimensions
5 Installation and Wiring Slide the Unit to the left on the DIN Track to remove it. Remove the Unit from the DIN Track. Tilt the Unit diagonally upwards and pull it up slightly, then pull it out to remove. Be careful not to drop it.
Page 163 5 Installation and Wiring W: Width of CPU Unit (including the End Cover) • Unit width Model Unit width [mm] NX502-££££ 135 • DIN Track dimension DIN Track model Dimension from the back of the Unit to the back of the DIN DIN Track dimension Track PFP-100N...
Page 164 5 Installation and Wiring Unit name Model Unit width Subtotal unit width NX Units: Temperature Input Units NX-TS3101 24 mm 48 mm Total (W=) 270 mm It includes End Cover (6 mm) dimension. Additional Information You can check the width of the CPU Rack when you create the Unit configuration on the CPU and Expansion Racks Tab Page on the Sysmac Studio.
Page 165 5 Installation and Wiring Approx. 150 to 175 Unit: (mm) *1. This is the dimension from the back of the Unit to the communications cables. Approx. 150 mm: When MPS588-C connector is used Approx. 175 mm: When XS6G-T421-1 connector is used Precautions for Safe Use Do not pull on the cables or bend the cables beyond their natural limit.
Page 166: Wiring
5 Installation and Wiring Wiring WARNING • Make sure that the voltages and currents that are input to the slaves and Units are within the specified ranges. Inputting voltages or currents that are outside of the specified ranges may cause accidents or fire.
Page 167: Wiring The Additional Nx Unit Power Supply Unit
5 Installation and Wiring Connect the DC power supply to the Unit power supply terminals. Terminal number indi- Terminal name Description cation A1, B1 24 V Connect the + terminal (24 VDC) of the Unit power supply to A1 or A3, B3 Connect the - terminal (0 VDC) of the Unit power supply to A3 or The 24-V terminals and 0-V terminals are internally connected to each other.
Page 168 5 Installation and Wiring CAUTION When you connect a computer or other peripheral device to a Controller that has a non-isolated DC power supply, either ground the 0-V side of the external power supply for the Unit power supply or do not ground it at all. If the peripheral devices are grounded incorrectly, the external power supply for the Unit power supply may be short-circuited.
Page 169: Electrically Connected To
5 Installation and Wiring Grounding Symbol Function type A7, B7 Functional grounding is done to protect device and system functions, including prevention of noise from external sources, or prevention of noise from devices or equipment that could have harmful effects on other devices or equipment. DIN Track Contact Plates A Unit that has a ground terminal also has a DIN Track contact plate on the back of the Unit.
Page 170 If the ground wire for a Unit with a ground terminal is shared with power equipment, noise will adverse- ly affect the Units. You can use OMRON NX-AUX01 DIN Track Insulation Spacers with PFP-50N or PFP-100N DIN Tracks to isolate the CPU Rack from the control panel.
Page 171: Wiring The Built-In Ethercat Port
Screws M4 x 10 DIN Tracks Control panel • DIN Track Insulation Spacers NX-AUX01 (OMRON Corporation) Three Spacers are included in one model. 14.8 Precautions for Correct Use If you use DIN Track Insulation Spacers to install a CPU Rack, the height will be increased by approximately 10 mm.
Page 172: Wiring To The Cpu Unit Terminal Block
5 Installation and Wiring 5-4-8 Wiring to the CPU Unit Terminal Block This section describes how to connect wires to the screwless clamping terminal block on the CPU Unit, the installation and removing methods, and functions for preventing incorrect attachment. You can connect ferrules that are attached to the twisted wires to the screwless clamping terminal block.
Page 173 5 Installation and Wiring Applica- Ferrule ble wire Manufac- Terminal types Crimping tool turer model (AWG)) All terminals except Phoenix AI0,34-8 0.34 (#22) Phoenix Contact (Applicable wire size given ground terminals Contact in parentheses) AI0,5-8 0.5 (#20) CRIMPFOX 6 (0.25 to 6 mm , AWG24 to AI0,5-10 AI0,75-8...
Page 174 5 Installation and Wiring Wire type Conductor Terminals Twisted wires Solid wire length Wire size (stripping Current ca- Unplat- Unplat- Classification Plated Plated length) pacity All terminals ex- 2 A max. Possi- Possible Possible Possible 0.08 to 1.5 8 to 10 mm cept ground ter- Greater than Not pos-...
Page 175 2.5-mm dia. 0.4 mm 2.5 mm Recommended screwdriver model Model Manufacturer OMRON Corporation XW4Z-00B SZF 0-0,4×2,5 Phoenix Contact The minimum standard number of package is 10 pcs. l Connecting Ferrules Insert the ferrule straight into the terminal hole. It is not necessary to press a flat-blade screwdriver into the release hole.
Page 176 5 Installation and Wiring Release hole Flat-blade screwdriver 10 to 15° Leave the flat-blade screwdriver pressed into the release hole and insert the twisted wire or the solid wire into the terminal hole. Insert the twisted wire or the solid wire until the stripped portion is no longer visible in the termi- nal hole to prevent shorting.
Page 177 5 Installation and Wiring Precautions for Safe Use • Do not press a flat-blade screwdriver straight into the release hole on a screwless clamping terminal block. Doing so may break the terminal block. • When you insert a flat-blade screwdriver into a release hole on a screwless clamping terminal block, press it down with a force of 30N or less.
Page 178 5 Installation and Wiring 1.5 mm or less 4.0 mm or less Pass a cable tie through the holes for securing wires on the upper and lower sides of the screwless clamping terminal block. Holes for securing wires Cable tie Bundle wires with a cable tie and secure them to the screwless clamping terminal block.
Page 179 5 Installation and Wiring Space to ensure ventilation l Removing Wires Use the following procedure to remove the wires from the terminal block. The removal method is the same for ferrules, twisted wires, and solid wires. If wires are secured firmly to the terminal block, release them first. Press a flat-blade screwdriver at an angle into the release hole.
Page 180 5 Installation and Wiring Precautions for Safe Use • Do not press a flat-blade screwdriver straight into the release hole on a screwless clamping terminal block. Doing so may break the terminal block. • When you insert a flat-blade screwdriver into a release hole on a screwless clamping terminal block, press it down with a force of 30N or less.
Page 181 5 Installation and Wiring Additional Information Procedure to Remove Tight Ferules Use the following procedure to remove tight ferrules. 1. Press a flat-blade screwdriver at an angle into the release hole. The appropriate angle of the screwdriver is 10 to 15° to the horizontal. The tip of the flat-blade screwdriver contacts the ferrule if you press the driver too deep, and this makes the ferrule difficult to be pulled out.
Page 182 5 Installation and Wiring While pressing the terminal block lock lever, pull the terminal block and remove it. Lock lever Terminal block Attaching a Terminal Block Put the hook of the terminal block on the guide at the bottom of the CPU Unit, raise the termi- nal block, and press it until it clicks.
Page 183 5 Installation and Wiring Unit Terminal block Cannot be attached. l Types of Coding Pins There are two types of Coding Pins, both with their own unique shape: one for terminal blocks and one for Units. Three pins comes with each runner. For terminal block use For Unit use Runners...
Page 184 5 Installation and Wiring Terminal Unit block Holes used Holes used by OMRON by OMRON Holes for incorrect Holes for incorrect attachment attachment prevention prevention (pin locations) (pin locations) ○: Pin inserted Pin locations for terminal block Pin locations for Unit Pattern No.
Page 185 Precautions for Correct Use • OMRON uses the holes other than No. 1 to 6 in the figure above. If you insert a Coding Pin into one of the holes used by OMRON on the terminal block side, this makes it impossible to mount the terminal block on a Unit.
Page 186 5 Installation and Wiring Unit 5-56 NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 187: Control Panel Installation
5 Installation and Wiring Control Panel Installation To ensure system reliability and safety, the system must be designed and configured according to the installation environment (temperature, humidity, vibration, shock, corrosive gases, overcurrent, noise, etc.). 5-5-1 Temperature Panels have been reduced in size due to space-saving and miniaturization in devices and systems, and the temperature inside the panel may be at least 10 to 15°C higher than outside the panel.
Page 188: Humidity
5 Installation and Wiring l Forced Ventilation (by Fan at Top of Panel) Controller Controller Air filter Forced Ventilation Method l Forced Air Circulation (by Fan in Closed Panel) Controller Controller Forced Air Circulation l Room Cooling (Cooling the Entire Room Where the Control Panel Is Lo- cated) Cooler Control panel...
Page 189: Vibration And Shock
5 Installation and Wiring Control panel Moisture absorber Controller Power ON Heater Examples of Measures against Condensation 5-5-3 Vibration and Shock The Controller is tested for conformity with the sine wave vibration test method (IEC 60068-2-6) and the shock test method (IEC 60068-2-27) of the Environmental Testing for Electrotechnical Products. It is designed so that malfunctioning will not occur within the specifications for vibration and shock.
Page 190 5 Installation and Wiring Example of Recommended Equipment Arrangement Controller Control panel Control panel High-voltage power panel Example of Poor Equipment Arrangement Controller Control panel Control panel High-voltage power panel Examples of Equipment Arrangement in Panel with High-voltage Devices Arrangement of Controller and Units The coils and contacts in electromagnetic contacts and relays in an external circuit are sources of noise.
Page 191 5 Installation and Wiring • Use an isolating transformer to significantly reduce noise between the Controller and the ground. In- stall the isolating transformer between the Controller power supply and the noise filter, and do not ground the secondary coil of the transformer. •...
Page 192 5 Installation and Wiring • If the signal lines and power lines cannot be routed in separate ducts, use shielded cable. Connect the shield to the ground terminal at the Controller, and leave it unconnected at the input device. • Wire the lines so that common impedance does not occur. Such wiring will increase the number of wires, so use common return circuits.
Page 193 5 Installation and Wiring Partition Power Signal Signal Signal supply cables cables cables cables (group A) (group B) (group C) Signal cables Signal cables Signal cables Power supply cables Power supply cables Partitioning Methods for Signal and Power Supply Cables •...
Page 194: Grounding
5 Installation and Wiring High-voltage power panel Metal tubing Power lines Power lines 200 mm Controller Controller Ground to 100 Ω or less 200 mm Example: Separating Controller from Power Lines l Other Precautions • Digital I/O Units have both plus and minus commons, so pay attention to the polarity when wir- ing.
Page 195 5 Installation and Wiring Each of these earthing methods is given below. l Equipotential Bonding System Equipotential bonding is an earthing method in which steel frames and building structures, metal ducts and pipes, and metal structures in floors are connected together and make connections to the earth trunk line to achieve a uniform potential everywhere across the entire building.
Page 196 5 Installation and Wiring NX-series CPU Unit NX-series NX502 CPU Unit A device that could Control panel Other device NX-AUX01 be a noise source 10 m min. b. Installation method by connecting devices and noise sources to a common earth electrode This is an earthing method to connect the device that is connected with a communications ca- ble, other devices, and a device that could be a noise source, to a common earth electrode.
Page 197 5 Installation and Wiring NX-series CPU Unit NX-series NX502 CPU Unit A device that could Control panel Other device NX-AUX01 be a noise source Precautions for Grounding l General Precautions • To prevent electrical shock, do not connect devices to ground poles (or steel frames) with non- equalized potential to which multiple devices are connected.
Page 198 5 Installation and Wiring l Controller Ground Terminals The Controller has the following ground terminal. Grounding type Symbol Connection Functional Ground this terminal when power supply noise causes malfunctioning. Grounding When the functional ground terminal is correctly grounded, it is generally effective in suppressing power supply common noise.
Page 199: Troubleshooting
Troubleshooting This section describes the overview of the methods for checking errors. Overview of Troubleshooting................ 6-2 NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 200: Overview Of Troubleshooting
6 Troubleshooting Overview of Troubleshooting You manage all of the errors that occur on the NJ/NX-series Controller as events. This allows you to see what errors have occurred and find corrections for them with the same methods for the entire range of errors that is managed (i.e., CPU Unit, X Bus Units, NX Units, NX-series Slave Terminals, EtherCAT slaves , and CJ-series Units).
Page 201: Inspection And Maintenance
Inspection and Maintenance This section describes the required inspections and maintenance. It also describes the service life and replacement procedure for the Battery. Cleaning and Maintenance ................7-2 7-1-1 Cleaning ......................7-2 7-1-2 Periodic Inspections ..................7-3 7-1-3 Unit Replacement Precautions................ 7-4 Replacing the Battery ..................
Page 202: Cleaning And Maintenance
7 Inspection and Maintenance Cleaning and Maintenance This section describes daily maintenance and the cleaning and inspection methods. Daily or periodic inspections are required in order to maintain the NX-series NX502 CPU Unit’s func- tions in peak operating condition. 7-1-1 Cleaning Perform the following cleaning procedures periodically to ensure the NX-series CPU Unit is main- tained in the best operating condition.
Page 203: Periodic Inspections
7 Inspection and Maintenance 7-1-2 Periodic Inspections Although the major components in NX-series Controllers have an extremely long life time, they can deteriorate under improper environmental conditions. Periodic inspections are thus required to ensure that the required conditions are being kept. Inspection is recommended at least once every six months to a year, but more frequent inspections may be necessary depending on the severe environments.
Page 204: Unit Replacement Precautions
7 Inspection and Maintenance Inspec- Inspection details Criteria Correction tion item Installa- Check that the DIN Track No looseness Securely lock the DIN Track mounting tion and mounting hooks on all hooks. wiring Units are securely locked. Check that cable connec- No looseness Correct any improperly installed connec- tors are fully inserted and...
Page 205 7 Inspection and Maintenance Precautions for Safe Use • Make sure that the required data, including the user program, configurations, settings, and variables, is transferred to a CPU Unit that was replaced and to externally connected devices before restarting operation. Be sure to include the tag data link settings and routing tables, which are stored in the CPU Unit.
Page 206: Replacing The Battery
7 Inspection and Maintenance Replacing the Battery The separately-sold Battery for clock is one of the NX-series components that require periodic re- placement as preventive maintenance. This section describes how to replace the Battery. Replacement Battery Use the Battery CJ1W-BAT01 for replacement. Precautions for Correct Use Be sure to mount a Battery within two years of the production date shown on the Battery label.
Page 207 40°C 55°C NX502-££££ This is the life expectancy which Omron guarantees, based on the calculation worst value of the part's spec- ification of the product. Low Battery Indicators If the Controller Setup has been set to detect a low-battery error, the ERROR indicator on the front of the CPU Unit will flash when the battery is nearly discharged.
Page 208 7 Inspection and Maintenance Once a low-battery error has been detected, it will take 5 days (at an ambient temperature of 25°C or less) before the battery fails if power has been supplied at least once a day. Clock data can be retained by ensuring that the CPU Unit power is not turned OFF until the Battery has been replaced.
Page 209: Appendices
Appendices The appendices provide the general specifications of the CPU Unit and Unit dimen- sions. Specifications ....................A-2 Dimensions ....................A-3 A-2-1 NX-series NX502 CPU Unit................A-3 A-2-2 End Cover ....................... A-4 A-2-3 SD Memory Card..................... A-4 List of Terminal Block Models..............A-5 A-3-1 Model Notation ....................
Page 210: A-1 Specifications
5 years at 25°C (Power ON time rate 0% (power OFF)) Model CJ1W-BAT01 (sold separately) Applicable standards Refer to the OMRON website (http://www.ia.omron.com/) or consult your OMRON representative for the applicable stand- ards. NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 211: A-2 Dimensions
Appendices A-2 Dimensions Dimensions of the Units are shown as follows. The unit of dimension is millimeter. A-2-1 NX-series NX502 CPU Unit NX502-££££ 114.2 128.5 2.45 Unit: (mm) *1. The dimension from the terminal block lock lever to the back surface of the CPU Unit. *2.
Page 212: A-2-2 End Cover
Appendices A-2-2 End Cover NX-END02 65.2 Unit: [mm] *1. The dimension from the attachment surface of the DIN Track to the front surface of the end cover. A-2-3 SD Memory Card ± ± 0.15 ± Unit: [mm] NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 213: List Of Terminal Block Models
Appendices A-3 List of Terminal Block Models This section provides a list of screwless clamping terminal block models that you can use with an NX- series NX502 CPU Unit, EtherCAT Coupler Unit, or NX Unit. A-3-1 Model Notation The model designation of a terminal block is given as follows. NX-TB Product type Terminal block...
Page 214 Appendices Ground terminal indica- Current capacity of ter- Terminal block model Number of terminals tion minals NX-TBC162 Provided 10 A Note When you purchase a terminal block, purchase an NX-TB£££2. NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 215: A-4 Version Information
Appendices A-4 Version Information Refer to Version Information for NX-series Controllers in the NJ/NX-series CPU Unit Software User’s Manual (Cat. No. W501) for the relationship between the unit versions of NX-series NX502 CPU Unit and the Sysmac Studio versions, and for the functions that are supported by each unit version. Refer to A-5 Support Functions of the CPU Units and Restrictions on the NX Units on page A-8 for information on NX Units that can be connected to the CPU Unit.
Page 216: Support Functions Of The Cpu Units And Restrictions On The Nx Units
Appendices A-5 Support Functions of the CPU Units and Restrictions on the NX Units Some support functions of the CPU Unit are restricted depending on the models and unit versions of NX Units mounted on it. The table below shows the functions that are restricted depending on the models and unit versions of the NX Units.
Page 217 Index NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 218 Index Index Fail-safe Circuits..............5-6 Fan.................. 3-12 ferrules................5-42 Additional I/O Power Supply Unit........4-5 Additional NX Unit Power Supply Unit.......4-4 Functional Grounding............5-68 applicable wires............... 5-42 attaching a terminal block..........5-52 Grounding...............5-37, 5-64 Basic System Configuration........1-6, 2-2 Battery................A-2 I/O power supply............4-3, 4-24 Battery connector..............
Page 219 Index POWER................3-7 X Bus connector..............3-5 Power OFF Operation............5-3 X Bus Unit..............2-6, 3-17 power supply-related Unit..........4-4 X Bus Unit configuration..........2-2, 2-5 Power Supply-related Unit..........3-15 preventing incorrect attachment of terminal blocks..5-52 Protective device............. 4-25 Recommended Power Supplies......4-22, 4-24 Recommended screwdriver ..........5-45 removing a terminal block..........5-51 replacement battery............7-6...
Page 220 Index NX-series NX502 CPU Unit Hardware User's Manual (W629)
Page 222 Hoffman Estates, IL 60169 U.S.A. Tel: (31) 2356-81-300 Fax: (31) 2356-81-388 Tel: (1) 847-843-7900 Fax: (1) 847-843-7787 ©OMRON Corporation 2023 All Rights Reserved. OMRON ASIA PACIFIC PTE. LTD. OMRON (CHINA) CO., LTD. In the interest of product improvement, 438B Alexandra Road, #08-01/02 Alexandra Room 2211, Bank of China Tower, specifications are subject to change without notice.

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