POINT I/O Thermocouple and RTD Modules

Transcription

1 POINT I/O Thermocouple and RTD Modules Cat. No IT2I and 1734-IR2 User Manual

2 Important User Information Because of the variety of uses for the products described in this publication, those responsible for the application and use of these products must satisfy themselves that all necessary steps have been taken to assure that each application meets all performance and safety requirements, including any applicable laws, regulations, codes and standards. In no event will Allen-Bradley be responsible or liable for indirect or consequential damage resulting from the use or application of these products. Any illustrations, charts, sample programs and layout examples shown in this guide are intended solely for purposes of example. Since there are many variables and requirements associated with any particular installation, Allen-Bradley does not assume responsibility or liability (to include intellectual property liability) for actual use based upon the examples shown in this publication. Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application, Installation and Maintenance of Solid-State Control (available from your local Allen-Bradley office), describes some important differences between solid-state equipment and electromechanical devices that should be taken into consideration when applying products such as those described in this publication. Reproduction of the contents of this copyrighted publication, in whole or in part, without written permission of Rockwell Automation, is prohibited. Throughout this publication, notes may be used to make you aware of safety considerations. The following annotations and their accompanying statements help you to identify a potential hazard, avoid a potential hazard, and recognize the consequences of a potential hazard.: WARNING! Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage or economic loss. ATTENTION! Identifies information about practices or circumstances that can lead to personal injury or death, property damage or economic loss. s IMPORTANT Identifies information that is critical for successful application and understanding of the product.

3 Environment and Enclosure ATTENTION! Environment and Enclosure This equipment is intended for use in a Pollution Degree 2 industrial environment, in overvoltage Category II applications (as defined in IEC publication ), at altitudes up to 2000 meters without derating. This equipment is supplied as "open type" equipment. It must be mounted within an enclosure that is suitably designed for those specific environmental conditions that will be present and appropriately designed to prevent personal injury resulting from accessibility to live parts. The interior of the enclosure must be accessible only by the use of a tool. Subsequent sections of this publication may contain additional information regarding specific enclosure type ratings that are required to comply with certain product safety certifications. See NEMA Standards publication 250 and IEC publication 60529, as applicable, for explanations of the degrees of protection provided by different types of enclosure. Also, see the appropriate sections in this publication, as well as the Allen-Bradley publication ("Industrial Automation Wiring and Grounding Guidelines"), for additional installation requirements pertaining to this equipment.

4 Rockwell Automation Support Rockwell Automation offers support services worldwide, with over 75 sales/support offices, 512 authorized distributors and 260 authorized systems integrators located throughout the United States alone, as well as Rockwell Automation representatives in every major country in the world. Local Product Support Contact your local Rockwell Automation representative for: sales and order support product technical training warranty support support service agreements Technical Product Assistance If you need to contact Rockwell Automation for technical assistance, please review the troubleshooting information first. If the problem persists, then call your local Rockwell Automation representative. Your Questions or Comments on this Manual If you have comments about this manual, please use the How Are We Doing form at the back of this manual to let us know.

5 Preface About This User Manual Purpose of This Manual This manual describes how to install, configure and troubleshoot your Thermocouple and RTD modules. For information about: See: Understanding Configurable POINT I/O Thermocouple Input Chapter 1 Module and RTD Input Module Features Installing the Thermocouple or RTD Module Chapter 2 Configuring Your Thermocouple Input Module and Your RTD Chapter 3 Input Module Calibrating Your Thermocouple or RTD Input Module Chapter 4 Troubleshooting the POINT I/O Thermocouple Input Module Chapter 5 and the RTD Input Module Specifications Appendix A Who Should Use This Manual You must be able to use your selected configuration software to set up and calibrate these modules. You must have the capability to download and use files. We assume you know how to do this in this manual. If you do not, refer to your software user manuals or online help before attempting to use these modules. 1

6 Preface 2 Related Products and Documentation The following table lists related 1734 products and documentation. Description Cat. No. Publication POINT I/O Technical Data 1734-Series 1734-TD002 Sink Input Module Installation Instructions 1734-IB2, -IB IN051 Source Output Module Installation Instructions 1734-IV2, -IV IN V ac Input Module Installation Instructions 1734-IM 1734-IN V ac Input Module Installation Instructions 1734-IA IN /220V ac Output Module Installation Instructions 1734-OA IN009 Analog Current Input Module Installation Instructions 1734-IE2C 1734-IN053 Analog Current Output Module Installation Instructions 1734-OE2C 1734-IN054 Analog Voltage Input Module Installation Instructions 1734-IE2V 1734-IN001 Analog Voltage Output Module Installation Instructions 1734-OE2V 1734-IN002 Very High Speed Counter Module Installation Instructions 1734-VHSC IN003 Very High Speed Counter Module Installation Instructions 1734-VHSC IN004 5V Encoder/Counter Module Installation Instructions 1734-IJ 1734-IN005 24V Encoder/Counter Module Installation Instructions 1734-IK 1734-IN006 Thermocouple Input Module Installation Instructions 1734-IT2I 1734-IN011 RTD Input Module Installation Instructions 1734-IR IN012 Relay Output Module Installation Instructions 1734-OW IN055 Protected Output Module Installation Instructions 1734-OB2E, -OB4E 1734-IN056 DeviceNet Communication Interface Installation Instructions 1734-PDN 1734-IN057 POINT I/O 24V dc Expansion Power Supply Installation Instructions 1734-EP24DC 1734-IN058 Field Potential Distributor Installation Instructions 1734-FPD 1734-IN059 General Installation Instructions All IN510 Wiring Base Assembly Installation Instructions 1734-TB, -TBS Wiring Base Assembly Installation Instructions 1734-TB3, -TB3S 1734-IN013 Cold Junction Wiring Base Assembly Installation Instruction 1734-TBCJC 1734-IN583 8 dc Input/8 Output Module Installation Instructions 1734D-IB8XOB dc Input/8 Relay Output Module Installation Instructions 1734D-IB8XOW ac Input/8 OutputModule Installation Instructions 1734D-IA8XOA ac Input/8 Relay Output Module Installation Instructions 1734D-IA8XOW ac Input Module Installation Instructions 1734D-IA D-IN dc Input Module Installation Instructions 1734D-IB D-IN002

7 Table of Contents Understanding Configurable POINT I/O Thermocouple Input Module and RTD Input Module Features Installing the Thermocouple or RTD Module Configuring Your Thermocouple Input Module and Your RTD Input Module What this Chapter Contains Setting a POINT I/O Thermocouple or RTD Module s Operating Status Input Type Select Communicating with Your Module Default Data Map for the Thermocouple Input Module, Cat. No IT2I Data Format (1734-IT2I and 1734-IR2) Using Module Alarms Overrange Alarm (1734-IT2I and 1734-IR2) Underrange Alarm (1734-IT2I and 1734-IR2) Level Alarms (1734-IT2I and 1734-IR2) Open Wire Alarm (1734-IT2I and 1734-IR2) Cold Junction Compensation (1734-IT2I only) Cold Junction Enable (1734-IT2I only Noise Filtering (1734-IT2I and 1734-IR2) Chapter Summary General Installing the Mounting Base/ Wiring Base Assembly Installing an I/O Module Installing the Removable Terminal Block Removing a Mounting Base Wiring the Thermocouple Input Module Wiring the RTD Input Module Wiring Diagram Chapter Summary Configuration Overview Commissioning a Node Using the RSNetWorx Commissioning Tool Using Sequential Auto Addressing Using 3rd Party Configuration Software Adding the Adapter to Your Network Adding I/O Modules to Your Network Setting the Thermocouple Input Module Parameters Using RSNetWorx Configuring Your Thermocouple Input Module Basic Setup Parameters Advanced Setup Parameters Setting the RTD Input Module Parameters Using RSNetWorx 3-14 Configuring Your RTD Input Module Basic Setup Parameters Advanced Setup Parameters Checking I/O Status and Viewing/Editing the EDS File IT2I IR i

8 Table of Contents ii Calibrating Your Thermocouple or RTD Input Module Troubleshooting the POINT I/O Thermocouple Input Module and the RTD Input Module What This Chapter Contains When and How to Calibrate Your POINT I/O Thermocouple or RTD Input Module Calibration Method Tools and Equipment Required to Calibrate Your Thermocouple Module Calibrating the Thermocouple Input Module Input (mv) Calibration Cold Junction Compensation Calibration Tools and Equipment Required to Calibrate Your RTD Module Calibrating the RTD Input Module Chapter Summary What this Chapter Contains Troubleshooting with the Indicators Repair Chapter Summary Specifications 1734-IR2 RTD Input Analog Module A IT2I Thermocouple Input Module A-3 Safety Approvals B-1 How Are We Doing? Index

9 Chapter 1 Understanding Configurable POINT I/O Thermocouple Input Module and RTD Input Module Features What this Chapter Contains Read this chapter to familiarize yourself with configurable features on the 1734-IT2I module and the 1734-IR2 module. For information on: See page: Setting a POINT I/O Thermocouple or RTD Module s Operating 1-2 Status Input Type Select 1-2 Input Type Select 1-2 Data Format (1734-IT2I and 1734-IR2) 1-4 Using Module Alarms 1-5 Overrange Alarm (1734-IT2I and 1734-IR2) 1-5 Underrange Alarm (1734-IT2I and 1734-IR2) 1-5 Open Wire Alarm (1734-IT2I and 1734-IR2) 1-6 Chapter Summary 1-6 This chapter describes the following features: Input type Sensor type Data formats Preset temperature selection Fault mode Overrange Alarms Underrange alarms Fault alarms Important:You must use your programming software, like Rockwell Automation RSNetworx, to configure these features. A brief description of each module feature is provided in this chapter, but you must use the online help included with your programming software to perform specific configuration. You can find the EDS files for this module at 1

10 1-2 Understanding Configurable POINT I/O Thermocouple Input Module and RTD Input Module Features Setting a POINT I/O Thermocouple or RTD Module s Operating Status Input Type Select The 1734-IT2I consists fo two isolated millivolt inputs (+70mV). The module can be configured to do the linearization necessary for thermocouple inputs. Supported thermocouple input types are Supported Sensor Types - Thermocouple mv (default) -70 to +70mV B 300 to 1800 C (572 to 3272 F) C 0 to 1000 C (32 to 1832 F) E 250 to 1000 C ( 418 to 1832 F) J 210 to 1200 C ( 346 to 2192 F) K 250 to 1372 C ( 418 to 2502 F) N 250 to 1300 C ( 418 to 2372 F) R 0 to 1768 C (32 to 3214 F) S 0 to 1768 C (32 to 3214 F) T 250 to 400 C ( 418 to 752 F) The 1734-IR2 consists of two RTD inputs (0 to 600Ω). The module can be configured to do the linearization necessary for RTD inputs. Supported input types are Supported Sensor Types - RTD 100 Pt α = Euro (-200 to +870 C) 200 Pt α = Euro (-200 to +630 C) 100 Pt α = U.S. (-200 to +630 C) 200 Pt α = U.S. (-200 to +630 C) 10 Cu α = (-200 to +260 C) 100 Ni α = (-60 to +250 C) 120 Ni α = (-60 to +250 C) 120 Ni α = (-60 to +250 C) Communicating with Your Module I/O messages are sent to (consumed) and received from (produced) the POINT I/O modules. These messages are mapped into the processor s memory. The Thermocouple input module produces 8 bytes of input data (scanner Rx) and fault status data. It does not consume I/O data (scanner Tx). The RTD input module produces 6 bytes of input data (scanner Rx) and fault status data. It does not consume I/O data (scanner Tx).

11 Understanding Configurable POINT I/O Thermocouple Input Module and RTD Input Module Features 1-3 Default Data Map for the Thermocouple Input Module, Cat. No IT2I Produces (scanner Rx) Input Channel 0 - High Byte Input Channel 0 - Low Byte Input Channel 1 - High Byte Input Channel 1 - Low Byte Status Byte for Channel 1 Status Byte for Channel 0 OR UR HHA L LA HA LA CM CF OR UR HHA L LA HA LA CM CF OR UR Cold Junction Temperature (Selectable: Channel 0, Channel 1, or Average of both Channel 0 and 1) Consumes (scanner No consumed data Tx) Where: CF = Channel Fault status; 0 = no error, 1 = fault CM = Calibration Mode; 0 = normal, 1 = calibration mode LA = Low Alarm; 0 = no error, 1 = fault (value went below setpoint) HA = High Alarm; 0 = no error, 1 = fault (value went below setpoint LLA = Low/Low Alarm; 0 = no error, 1 = fault (value went below setpoint HHA = High/High Alarm; 0 = no error, 1 = fault (value went below setpoint UR = Underrange; 0 = no error, 1 = fault (value went below selected range) OR = Overrange; 0 = no error, 1 = fault (value went above selected range) Default Data Map for the RTD Input Module, Cat. No IR Produces (scanner Rx) Input Channel 0 - High Byte Input Channel 0 - Low Byte Input Channel 1 - High Byte Input Channel 1 - Low Byte Status Byte for Channel 1 Status Byte for Channel 0 OR UR HHA L LA HA LA CM CF OR UR HHA L LA HA LA CM CF Consumes (scanner Tx) No consumed data Where: CF = Channel Fault status; 0 = no error, 1 = fault CM = Calibration Mode; 0 = normal, 1 = calibration mode LA = Low Alarm; 0 = no error, 1 = fault (value went below setpoint) HA = High Alarm; 0 = no error, 1 = fault (value went below setpoint) LLA = Low/Low Alarm; 0 = no error, 1 = fault (value went below setpoint) HHA = High/High Alarm; 0 = no error, 1 = fault (value went below setpoint) UR = Underrange; 0 = no error, 1 = fault (value went below selected range) OR = Overrange; 0 = no error, 1 = fault (value went above selected range)

12 1-4 Understanding Configurable POINT I/O Thermocouple Input Module and RTD Input Module Features Data Format (1734-IT2I and 1734-IR2) You must choose a module data format in your user program. Select the format. There are 4 predefined scales and 1 custom scale.. Data Format mv Custom Scale C Celcius F Fahrenheit K Kelvin R Rankine Predefined Scale o C, o F, R and o K will have data returned in tenths of a degree (250 implies 25.0 ). For the 1734-IR2, if using ohms, the default data returned is in tenths of ohms (1234 implies ohms). For the 1734-IT2, if using mv, the default data is returned in hundredths of a mv, or tens of a µv (3500 implies ). If the input scale is custom scale, you can specify scaling points as shown in the table below IT2I Thermocouple Input Module Thermocouple Type Low Scaling Endpoint High Scaling Endpoint RTD Type RTD Input Module Low Scaling Endpoint mv 0mV 70mV Ohms 100Ω 500Ω Type B 100 C 1000 C 100Ω Pt α = Euro 0 C 500 C Type C 0 C 1000 C 200Ω Pt α = Euro 0 C 500 C Type E 0 C 1000 C 100Ω Pt α = U.S. 0 C 500 C Type J 0 C 1000 C 200Ω Pt α = U.S. 0 C 500 C Type K 0 C 1000 C 10Ω Cu α = C 250 C Type N 0 C 1000 C 100Ω Ni α = C 250 C Type R 0 C 1000 C 120Ω Ni α = C 250 C Type S 0 C 1000 C 120Ω Niα = C 250 C Type T 0 C 100 C High Scaling Endpoint

13 Understanding Configurable POINT I/O Thermocouple Input Module and RTD Input Module Features 1-5 Using Module Alarms POINT I/O modules are capable of generating the following alarms: Overrange Underrange Level (low-low, low, high, high-high) Cold Junction Compensation (CJC) Fault (1734-IT2 only) Open Wire Detection Overrange Alarm (1734-IT2I and 1734-IR2) The channel overrange alarm is set if the input is greater than the maximum temperature (thermocouple or RTD range dependent), millivolt (+75mV) or resistance (600Ω) range value, or above the maximum range of the thermocouple or RTD. The cold junction compensator has its own overrange alarm. If the CJC temperature goes above 70 C, the overrange alarm is set. Underrange Alarm (1734-IT2I and 1734-IR2) The channel underrange alarm is set if the input is less than the minimum temperature (thermocouple or RTD range dependent), millivolt (-75mV) or resistance (10Ω) range value, or below the minimum range of the thermocouple or RTD. The cold junction compensator has its own underrange alarm. If the CJC temperature goes below 0 C, the underrange alarm is set. Level Alarms (1734-IT2I and 1734-IR2) There are 4 different level alarms available to the user. Low, Low-Low, High High-High. When the channel input goes below a low alarm or above a high alarm, a bit is set in the data table. All Alarm Status bits can be read individually or by reading the Channel Status Byte (Bits 2-5 for channel 0; bits for channel 1). Each channel Alarm can be configured individually.

14 1-6 Understanding Configurable POINT I/O Thermocouple Input Module and RTD Input Module Features Open Wire Alarm (1734-IT2I and 1734-IR2) The module has the ability to check for a broken or detached wire. In any mode, if a broken/detached lead is detected, the data value is forced to maximum and the overrange alarm is set. Once the alarm is issued, it remains active as long as the input signal is faulted. Cold Junction Compensation (1734-IT2I only) When using thermocouples, cold junction compensation is required at the termination of the thermocouple wire. Cold junction can be accomplished in 3 different ways: enter an estimated temperature use a 1734-TBCJC mounting base (recommended) use external cold junction compensators Entering an estimated temperature is the least accurate way for CJC compensation. Using external CJC is the most expensive way. Using the compensation built-into the 1734-TBCJC provides the easiest and most accurate way. An open CJC causes the CJC input point to the maximum temperature value for the selected input type. This will cause an alarm to be set. Once the alarm is issued, it remains active as long as the input signal is faulted (above maximum). Cold Junction Enable (1734-IT2I only) Noise Filtering (1734-IT2I and 1734-IR2) Set this bit to enable or disable the cold junction linearization. If enabled, the proper cold junction compensation value will be applied to the selected thermocouple. If disabled, the data (CJ Temperature) will still be available but not applied to the input. If the Cold Junction Compensation Removable Terminal Block is not available, this parameter should be set to disabled. A cold junction value can be added using the 'Cold Junction Offset' parameter. You can select the type and amount of noise filtering on each individual channel. Notch filter of analog to digital converter First order low pass digital filter Choose the filter that provides you with the update and step response that most closely matches your system requirements. Chapter Summary In this chapter, we told you about the POINT system and the Thermocouple and RTD modules, and how they communicate with programmable controllers.

15 Chapter 2 Installing the Thermocouple or RTD Module General The 1734-IR2 RTD module uses a 1734-TB or -TBS mounting base assembly with a 1734-RTB removable terminal block (RTB) for RTD wiring. The thermocouple module uses a 1734-TBCJC mounting base assembly with a 1734-CJCRTB removable terminal block with built-in cold junction compensation for the thermocouple inputs. Installing the Mounting Base/ Wiring Base Assembly The wiring base assembly (1734-TB or -TBS) consists of a mounting base (cat. no MB) and a removable terminal block (cat. no RTB or -RTBS). The wiring base assembly (1734-TBCJC) consists of a mounting base (cat. no MB) and a removable terminal block (cat. no RTBCJC). You can install the assembly, or just the mounting base. To install the mounting base/wiring base assembly on the DIN rail: 1. Position the mounting base/wiring base assembly vertically above the installed units (adapter, power supply or existing module). 2. Slide the mounting base down allowing the interlocking side pieces to engage the adjacent module or adapter. 1

16 Installing the Thermocouple or RTD Module Module Locking Mechanism 1 Module Status Network Status NODE: RTD Input Insertable I/O Module Slide-in Writable Label Module Locking Mechanism Module Status Network Status NODE: Relay Output Insertable I/O Module Slide-in Writable Label 1734 OX2 Module Wiring Diagram Mechanical Keying (orange) DIN Rail Locking Screw (orange) RTB Removal Handle Module Wiring Diagram Mechanical Keying (orange) DIN Rail Locking Screw (orange) RTB Removal Handle Removable Terminal Block (RTBCJC) Interlocking Side Pieces Interlocking Side Pieces Mounting Base 1734-IR2 Mounting Base 1734-IT2I 3. Press firmly to seat the mounting base on the DIN rail. The mounting base will snap into place. 4. To remove the mounting base from the DIN rail: a. remove any installed module (and any module immediately to the right), and b. use a small bladed screwdriver to rotate the DIN rail locking screw to a vertical position. This releases the locking mechanism. Then lift straight up to remove the mounting base. 5. Repeat this procedure for the next mounting base assembly.

17 0 1 Installing the Thermocouple or RTD Module 2-3 Installing an I/O Module The module can be installed before, or after base installation. Make sure that the mounting base is correctly keyed before installing the module into the mounting base. In addition, make sure the mounting base locking screw is positioned horizontal referenced to the base. 1. Using a bladed screwdriver, rotate the keyswitch on the mounting base clockwise till the number required for the type of module being installed aligns with the notch in the base RTD - Position IT2I - Position 6 Turn the keyswitch to align the number with the notch. 2. Make certain the DIN rail locking screw is in the horizontal position. (You cannot insert the module if the locking mechanism is unlocked.) Notch (position 6 shown) Make sure the DIN rail locking screw is in the horizontal position. 3. Insert the module straight down into the mounting base and press to secure. The module will lock into place. Module Status Network Status NODE: Thermocouple Input 1734 IT2I M

18 2-4 Installing the Thermocouple or RTD Module Installing the Removable Terminal Block A removable terminal block is supplied with your mounting base assembly. To remove, pull up on the RTB handle. This allows the base to be removed and replaced as necessary without removing any of the wiring. To reinsert the removable terminal block, proceed as follows. 1. Insert the RTB end opposite the handle into the base unit. This end has a curved section that engages with the mounting base. Hook the RTB end into the mounting base end, and rotate until it locks into place. 2. Rotate the terminal block into the mounting base until it locks itself in place. 3. If an I/O module is installed, snap the RTB handle into place on the module. Removing a Mounting Base To remove a mounting base, you must remove any installed module, and remove the removable terminal block (if wired). WARNING! When you insert or remove the module while backplane power is on, or you connect or disconnect the RTB with field side power applied, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure power is removed or the area is nonhazardous before proceeding. 1. Unlatch the RTB handle on the I/O module. 2. Pull on the RTB handle to remove the removable terminal block. 3. Press in on the module lock on the top of the module and pull up on the I/O module to remove from the base. 4. Remove the module to the right of the base you are removing. (The interlocking portion of the base sits under the adjacent module.) 5. Use a small bladed screwdriver to rotate the orange DIN rail locking screw on the mounting base to a vertical position. This releases the locking mechanism. 6. Then lift the mounting base straight up to remove.

19 Installing the Thermocouple or RTD Module 2-5 Wiring the Thermocouple Input Module Module Status Network Status Module Status Network Status NODE: Status of Input 0 Status of Input 1 Thermocouple Input IT2I 0+ Shield IT2 3 Shield 0+ = Input channel 0 High 0- = Input channel 0 Low 1+ = Input channel 1 High 1- = Input channel 1 Low Shld = Shield Thermocouple 0 Thermocouple IR Channel Input High Input Low Shield Power is provided by the internal power bus.

20 2-6 Installing the Thermocouple or RTD Module Wiring the RTD Input Module Module Status Network Status Module Status Network Status NODE: Status of Input 0 Status of Input RTD Input 1734 IR2 Input 0/A HIgh Input Input 0/B Low Input Input 1/A High Input Input 1/B Low Input RET 0 Shield RET 1 Shield 1734IR2mod Wiring Diagram 0 1 In 0/A In 1/A 3-wire RTD In = Input channel RET = Sensor return Shield = Sensor cable shield 2 3 In 0/B In 1/B 2-wire 4 5 RTD RET 0 RET When using 2-wire RTDs, Shield Shield jumper IN/B to RET R2 Channel High Signal (+) Low Signal (-) Return Shield In 0/A In 0/B 2 In 1.A In 1/B 3 Chapter Summary In this chapter, you learned how to install your module and mounting base assembly. You also learned how to wire your module. Go on to Chapter 3 to learn how to configure your modules.

21 Chapter 3 Configuring Your Thermocouple Input Module and Your RTD Input Module This chapter describes how to configure your thermocouple input module with RSNetworx. For more information about: See page: Configuration Overview 3-1 Commissioning a Node 3-1 Adding the Adapter to Your Network 3-4 Setting the Thermocouple Input Module Parameters 3-7 Using RSNetWorx Configuring Your Thermocouple Input Module 3-9 Setting the RTD Input Module Parameters Using 3-14 RSNetWorx Configuring Your RTD Input Module 3-16 Checking I/O Status and Viewing/Editing the EDS File 3-21 Configuration Overview Configuring POINT I/O modules is as easy as POINT and click. RSNetWorx TM allows you to simply identify the network and configure the I/O modules with easy-to-use Electronic Data Sheet (EDS) files - just POINT to the field and click on your selection. To obtain EDS files for use in configuration, go to: In this chapter, you will learn how to: add the adapter to the system commission individual modules in the system and set the individual modules parameters. Commissioning a Node There are 3 methods for commissioning nodes: using the RSNetworx commissioning pulldown using the Sequential Auto Addressing feature using 3rd party configuration software 1

22 3-2 Configuring Your Thermocouple Input Module and Your RTD Input Module Using the RSNetWorx Commissioning Tool The RSNetWorx commissioning tool lets you commission devices (set the node address and the data rate parameters) that are either: connected to a DeviceNet network, or connected via a point-to-point connection. The node commissioning tool works through RSLinx; RSNetWorx does not have to be online when performing the operation. Before you can add any device to a DeviceNet network, it must be commissioned. This means that a node address and a data rate must be programmed into the device. Some devices are precommissioned, meaning a node address (usually set to 63) and a data rate (usually set to 500kbits/s) are programmed into the device at the factory prior to shipment. Other devices will need to be commissioned in the field. Once a device has been commissioned and attached to a network, you can use the RSNetWorx for DeviceNet node commissioning tool to edit the node address and data rate that were set previously. Exercise caution while editing node addresses when on a network. When you apply a new node address, it immediately overwrites the node address data in the device currently specified. If you decide to reassign node addresses, you should first determine the order in which this needs to be done so that all the devices will still have unique node addresses when you are finished. For example, if two of the devices on your network are a photoelectric sensor and a hand controller and you accidentally change the node address of the hand controller to be the same as that of the photoelectric sensor, then the photoelectric sensor will no longer have a unique address, which means that it will not be able to provide data to the scanner. If you cannot access a device, because you have used its node address for another device, you will have to remove it from the network, recommission it, then reinstall it on the network. ATTENTION! Do not change the data rate of devices while they are connected to a network. Erratic operation may result. We recommend that if you need to change the data rate of a device, you should remove it from the network, establish a point-to-point connection between the PC, which hosts the RSNetWorx for DeviceNet software, and the target device, recommission it, and then, reconnect it to the network.

23 Configuring Your Thermocouple Input Module and Your RTD Input Module 3-3 Using Sequential Auto Addressing Sequential Auto Addressing (SAA) will reassign the node address of every module to the right of the one you select. Each module will change it s node address to one greater than its neighbor. IMPORTANT Make sure the node address of the selected module is the desired value before issuing the SAA command. When this command is set, each module to the right will get a new address one greater than its neighbor. The addressing will ripple through a line of Point I/O modules, assigning a node number to each module installed in a mounting base. Steps to Auto Address a line of Point I/O modules: 1. Set the address of the first module you want to address. 2. Set the Auto Address command to Sequential Address. 3. All modules in line will reset with new sequential addresses. Example For example, if there are 5 POINT I/O modules in a line, and the address of the first module is 10. After the Sequential Address command is sent to the first module, the node address of the line will be: 10, 11, 12, 13, and 14. Using 3rd Party Configuration Software When using 3rd party configuration software, simply load the EDS files into the software and follow the designers instructions.

24 3-4 Configuring Your Thermocouple Input Module and Your RTD Input Module Adding the Adapter to Your Network You can use the RSNetworx for DeviceNet software, or some other configuration tool for DeviceNet, to configure your module. If the EDS files are not in your software, you can get them at You can configure the module while it is: online or offline This chapter shows configuration in the online mode. Configuration screens appear similar in both modes. The primary difference is that if you make changes offline, you must go online before the configuration changes take effect. Follow these steps: 1. Start the RSNetworx for DeviceNet software. 2. Add the communication device as shown below. (In this case, the chosen device was a 1770-KFD RS232 Interface.) 1. Click here to expand the list of communication adapters. 2. Double-click here to choose the scanner. You can also click and drag the scanner name onto the network. Make sure you choose the 1734-ADN Point I/O Scanner. The scanner appears on the network.

25 Configuring Your Thermocouple Input Module and Your RTD Input Module 3-5 Adding I/O Modules to Your Network After you add the communication device, you must add the POINT I/O modules connected to the scanner on the PointBus. 1. Add modules as shown below. 1. Click here to expand the list of Specialty modules. 2. Double-click on the catalog number to choose the module. You can also click and drag the module name onto the network. The out-of-the-box node setting for 1734 modules is 63. You can change the setting by using the node commissioning tool. The node commissioning tool is available either online or offline. IMPORTANT If you commission a node online, you must power down your system before the change takes place.

26 3-6 Configuring Your Thermocouple Input Module and Your RTD Input Module Go to the pulldown Tools. Select Node Commissioning. 2. Click on Browse. 3. Select the module to change. 4. The node commissioning screen returns. It displays the node number and data rate. 5. Change the node number and Apply. The screen will then identify the new setting. 6. Click on Close to continue

27 Configuring Your Thermocouple Input Module and Your RTD Input Module 3-7 Setting the Thermocouple Input Module Parameters Using RSNetWorx After adding the module to the network, you must configure the modules for use. IMPORTANT This chapter shows configuration in the online mode. Changes set in this mode take effect when you download to the individual module. 1. Configure the modules as shown below. 1. Right-click on the module. You can also left click on the module or name and the property screen will pop up. 2. Click on Properties to configure your adapter. You will see a pop-up screen with a series of tabs. Each tab provides options view or edit. The tabs are shown below and on the following pages. These screens are for the 1734-VHSC24 module. Identical screens are used for the 1734-VHSC5 module These are the tabs you click on to view the options.

28 3-8 Configuring Your Thermocouple Input Module and Your RTD Input Module Refer to the screens below for an explanation of its features. The module s name appears here. Type a description here. The module s address appears here. (This field is read only.) This screen also shows the module s device identity. Click on the Device parameters tab to get to the screen for setting the parameters. At any point, you can click here to finish changing configuration parameters. IMPORTANT: If configuration changes are made in offline mode, they do not take effect until the system goes online.. This screen appears after clicking on the Device parameters tab. If you want the existing parameters uploaded from the module, select Upload. The following screen will then show the existing parameters set on the module. Use this pulldown menu to edit or view the parameters. Available choices are: PointBus Configuration Status

29 Configuring Your Thermocouple Input Module and Your RTD Input Module 3-9 Configuring Your Thermocouple Input Module Basic Setup Parameters The basic parameters you need to set for the thermocouple module consist of: Temperature units - Select how the input will be linearized: mv/custom Scale (default) Celsius Fahrenheit Kelvin Rankine Thermocouple type - Choose the type of sensor for this input. The module will perform the linearization of the selected type. mv (No Linearization) Type B Type C Type E Type J Type K Type N Type R Type S Type T Cold Junction Enable - This bit will enable or disable the cold junction linearization. If enabled, the proper cold junction compensation value will be applied to the selected thermocouple. If disabled, the data (CJ Temperature) will still be available but not applied to the input. If the Cold Junction Compensation Removable Terminal Block is not available, this parameter should be set to disabled. A cold junction value can be added using the 'Cold Junction Offset' parameter. Cold Junction Produced Data - Selects how the Cold Junction Data is returned in the Produced IO message. The last two bytes of the produced message will contain one of the following: - none (zeros) - Channel 0 (default) - Channel 1 - Average of both channels IMPORTANT The Over/Under Range status is also included in the last two bytes, along with the cold junction value.

30 3-10 Configuring Your Thermocouple Input Module and Your RTD Input Module Advanced Setup Parameters Advanced parameters you can set for the thermocouple module consist of: Notch filter - Select the Notch Filter for the analog to digital converter. At higher frequencies, faster sample rates are possible 50Hz 60Hz (default) 100Hz 120Hz 200Hz 240Hz 300Hz 400Hz 480Hz If the filter value is changed, the module may require calibration to meet specifications. Digital filter - A digital filter is available on this module. The user sets a time constant which is used in the equation: Yn = Yn-1 + (dt / (dt + T A ) * (Xn-Yn-1) Where: Yn = new data Yn-1 = old data. dt = Channel Update Rate in milliseconds. T A = digital filter time constant. Xn = present unfiltered data. T A can be an integer from 0 to 10,000ms. If set to 0, the filter is disabled. Cold Junction Offset - If you don t use a 1734-RTBCJC removable terminal block, an estimate the junction temperature can be entered here. The value is entered in hundreths of degrees C, even if another scale is selected (2500 implies C).

31 Configuring Your Thermocouple Input Module and Your RTD Input Module 3-11 Enable alarms latch - If enabled, alarms for this channel will latch FAULTED until a Latch Reset command is received. Alarms effected: Input Status Low & High level Alarms Range Alarms Disable alarms - If Alarms are Disabled, all alarms for this channel will show No FAULT. This is useful for unused channels. Level alarms - low-low, low, high, and high-high - any value from to can be entered. Scaling - Values returned when input is at low scale value or high scale value. The low and high scale points are different for each sensor input: Thermocouple Type Low Scaling Endpoint High Scaling Endpoint mv 0mV 70mV Type B 100 C 1000 C Type C 0 C 1000 C Type E 0 C 1000 C Type J 0 C 1000 C Type K 0 C 1000 C Type N 0 C 1000 C Type R 0 C 1000 C Type S 0 C 1000 C Type T 0 C 100 C Start configuration at the pulldown. To configure your module, select Configuration and modify the parameters as desired for your application. When complete, download to your module by clicking on the Download to Device button. You can download each change as you make it using Single, or download all your changes using All. If you press the Apply button, only the selected parameter is downloaded to the module. Click here when finished.

32 3-12 Configuring Your Thermocouple Input Module and Your RTD Input Module Basic Setup 1. Select the temperature 2. Then select the type of thermocouple. B C E J K N R S T or mv. 3. Select cold junction commpensation if desired. 4. Select how the cold junction data is returned in the produced I/O message. Select None, channel 0. channel 1 or the average of both channels. 5. Download to the device.

33 Configuring Your Thermocouple Input Module and Your RTD Input Module 3-13 Advanced Setup 6. Select the notch filter desired (60Hz to 480Hz). 7. Select the digital filter (select as necessary). 8. Enable or disable the latching alarms. 9. Enable or disable the alarms. 10.Apply and download to the device.

34 3-14 Configuring Your Thermocouple Input Module and Your RTD Input Module Setting the RTD Input Module Parameters Using RSNetWorx After adding the module to the network, you must configure the modules for use. IMPORTANT This chapter shows configuration in the online mode. Changes set in this mode take effect when you download to the individual module. 1. Configure the modules as shown below. 1. Right-click on the module. You can also left click on the module or name and the property screen will pop up. 2. Click on Properties to configure your adapter. You will see a pop-up screen with a series of tabs. Each tab provides options view or edit. The tabs are shown below and on the following pages. These are the tabs you click on to view the options.

35 Configuring Your Thermocouple Input Module and Your RTD Input Module 3-15 Refer to the screens below for an explanation of its features. The module s name appears here. Type a description here. The module s address appears here. (This field is read only.) This screen also shows the module s device identity. Click on the Device parameters tab to get to the screen for setting the parameters. At any point, you can click here to finish changing configuration parameters. IMPORTANT: If configuration changes are made in offline mode, they do not take effect until the system goes online.. This screen appears after clicking on the Device parameters tab. If you want the existing parameters uploaded from the module, select Upload. The following screen will then show the existing parameters set on the module. Use this pulldown menu to edit or view the parameters. Available choices are: PointBus Configuration Status

36 3-16 Configuring Your Thermocouple Input Module and Your RTD Input Module Configuring Your RTD Input Module The configuration is divided into two areas: basic and advanced. Basic Setup Parameters The basic parameters you need to set for the RTD module consist of: Temperature units - Use the Temperature Scale parameter to select a predefined scale or a custom scale. Custom Scale allows the user to enter the scaling endpoint values. If using Ohms RTD Type, this parameter is ignored. Predefined Scales: Celsius(C), Fahrenheit(F), Kelvin(K), and Rankine(R) Scaling Endpoints for Custom Scale (low & high): RTD Type Low Scaling Endpoint Ohms 100Ω 500Ω 100Ω Pt α = Euro 0 C 500 C 200Ω Pt α = Euro 0 C 500 C 100Ω Pt α = U.S. 0 C 500 C 200Ω Pt α = U.S. 0 C 500 C 10Ω Cu α = C 250 C 100Ω Ni α = C 250 C 120Ω Ni α = C 250 C 120Ω Ni α = C 250 C High Scaling Endpoint RTD type - Select the RTD type that the input will be using (see table above). Valid types are shown in the table above. Copper RTD Offset - If using the copper RTD, this is the error of the Copper RTD (10Ohm Cu427) in Ohms. Enter a value between -250 and 250 in hundredths of Ohms (i.e. 361 = 3.61 Ohms). This value will be added to the input reading before linearization.

37 Configuring Your Thermocouple Input Module and Your RTD Input Module 3-17 Advanced Setup Parameters Advanced parameters you can set for the RTD module consist of: Notch filter - Select the Notch Filter for the analog to digital converter. At higher frequencies, faster sample rates are possible 50Hz 60Hz (default) 100Hz 120Hz 200Hz 240Hz 300Hz 400Hz 480Hz If the filter value is changed, the module may require calibration to meet specifications. Digital filter - A digital filter is available on this module. The user sets a time constant which is used in the equation: Yn = Yn-1 + (dt / (dt + T A ) * (Xn-Yn-1) Where: Yn = new data Yn-1 = old data. dt = Channel Update Rate in milliseconds. T A = digital filter time constant. Xn = present unfiltered data. T A can be an integer from 0 to 10,000ms. If set to 0, the filter is disabled. Enable alarms latch - If enabled, alarms for this channel will latch FAULTED until a Latch Reset command is received. Alarms effected: Input Status Low & High level Alarms Range Alarms

38 3-18 Configuring Your Thermocouple Input Module and Your RTD Input Module Disable alarms - If Alarms are Disabled, all alarms for this channel will show No FAULT. This is useful for unused channels. Level alarms - low-low, low, high, and high-high - Scaling - Values returned when input is at low scale value or high scale value. The low and high scale points are different for each sensor input: RTD Type Low Scaling Endpoint High Scaling Endpoint Ohms 100Ω 500Ω 100Ω Pt α = Euro 0 C 500 C 200Ω Pt α = Euro 0 C 500 C 100Ω Pt α = U.S. 0 C 500 C 200Ω Pt α = U.S. 0 C 500 C 10Ω Cu α = C 250 C 100Ω Ni α = C 250 C 120Ω Ni α = C 250 C 120Ω Ni α = C 250 C Start configuration at the pulldown. To configure your RTD module, select Configuration and modify the parameters as desired for your application. When complete, download to your module by clicking on the Download to Device button. You can download each change as you make it using Single, or download all your changes using All. If you press the Apply button, only the selected parameter is downloaded to the module. Click here when finished.

39 Configuring Your Thermocouple Input Module and Your RTD Input Module 3-19 Basic 1. Select the type of RTD you are using for channel 0. Repeat for channel 1 2. Then select the scale for channel 0. Repeat for channel 1 This is the error of Copper RTD (10Ohm Cu427) in Ohms. Enter value between -250 and 250 in hundredths of Ohms (i.e. 361 = 3.61 Ohms). If you are using a copper RTD, this value will be added to the input reading before linearization.

40 3-20 Configuring Your Thermocouple Input Module and Your RTD Input Module Advanced 3. Select the digital filter desired. (Range is 0 to ms.) 4. Enable or disable the latching alarms. 5. Enable or disable the alarms. 6. Select the notch filter. 7. Apply and download to the device.

41 Configuring Your Thermocouple Input Module and Your RTD Input Module 3-21 Checking I/O Status and Viewing/Editing the EDS File You can view the I/O defaults setup, and the EDS file by clicking on the appropriate tab IT2I Click on the I/O Defaults tab to display the default characteristics for this module. This screen shows the input/output defaults for the four modes. These are: Strobe Polled Change of state and Cyclic Click on the EDS File tab to display the statistics of the EDS file used to configure this module. Click on View File to view the actual EDS file (shown at the left). You can view the actual EDS file or edit the file.

42 3-22 Configuring Your Thermocouple Input Module and Your RTD Input Module 1734-IR2 Click on the I/O Defaults tab to display the default characteristics for this module. Click on the EDS File tab to display the statistics of the EDS file used to configure this module. This screen shows the input/output defaults for the four modes. These are: Strobe Polled Change of state and Cyclic Click on View File to view the actual EDS file (shown at the left).

43 Chapter 4 Calibrating Your Thermocouple or RTD Input Module What This Chapter Contains Use this chapter to calibrate the thermocouple/mv module or the RTD input module. We tell you about: For Information on: See Page When and How to Calibrate Your POINT I/O Thermocouple or RTD Input Module 4-1 Calibration Method 4-1 Tools and Equipment Required to Calibrate Your Thermocouple Module 4-2 Calibrating the Thermocouple Input Module 4-2 Input (mv) Calibration 4-4 Cold Junction Compensation Calibration 4-5 Tools and Equipment Required to Calibrate Your RTD Module 4-8 Calibrating the RTD Input Module 4-8 Chapter Summary 4-12 When and How to Calibrate Your POINT I/O Thermocouple or RTD Input Module Your module is shipped to you already calibrated. If a calibration check is required, the module must be in a POINT I/O system. Perform module calibration periodically, based on your application. Module calibration may also be required to remove module error due to aging of components in your system. Calibration Method Calibration is done through the I/O Configuration Software, such as RSNetworx and EDS files. If the EDS files are not in your software, you can get them at online at 1 Publication 1734-UM004A-EN-p - July 2001

44 4-2 Calibrating Your Thermocouple or RTD Input Module Tools and Equipment Required to Calibrate Your Thermocouple Module To calibrate your Thermocouple module, you will need the following tools and equipment Tool or Equipment: Precision Resistors Precision Voltage Source Description: High precision resistors: 1000Ω, 0.05%, 5ppm/ o C 3000Ω, 0.05%, 5ppm/ o C or Calibrated resistor Decade Box, 0.05% +100mV, 1mV resolution - accuracy +3µV or better Calibrating the Thermocouple Input Module To calibrate your thermocouple input module, connect the module in a DeviceNet system similar to that shown below. IMPORTANT Apply power to the power supply and module for at least 10 minutes before calibrating the module RTBCJC PDN IT2I Shield DeviceNet Input Thermocouple Channel 0 Connect to 4 and Thermocouple 1 Precision Voltage Source Channel 1 Connect to 6 and RTB Precision resistors Precision Voltage Source Publication 1734-UM004A-EN-p - July 2001

45 Calibrating Your Thermocouple or RTD Input Module Double-click on the icon to bring up the general parameter screen. Click on Device Parameters to view the parameters 2. The EDS editor will may you if you want to upload the configuration from the device. Click on Upload. 3. Select Calibration at the Group pulldown. This is the group pulldown. Publication 1734-UM004A-EN-p - July 2001

46 4-4 Calibrating Your Thermocouple or RTD Input Module Input (mv) Calibration 1. Click on Calibration Channel Select to bring up your channel selections. Select a channel (0 or 1), or select Both Channels. Click the Download to Device button. For input calibration, choose: Input Channel 0, Input Channel 1, or Both Channels. 2. Click on Calibration Command and select Begin Calibration. Click the Download to Device button. Both channel status indicators turn off. 3. Apply 0.00mV to the input (see wiring diagram on Page 4-2). Click on Accept Low Calibration. Click on the Download to Device button. The status indicator(s) for the channel(s) being calibrated will blink green. Select Accept Low Input and download to the device. Publication 1734-UM004A-EN-p - July 2001

47 Calibrating Your Thermocouple or RTD Input Module Set the source to 70mV. Click on Accept High Input. Click on the Download to Device button. Input calibration is now complete. The status indicator should be solid green (normal) or blinking red (no load). If an error occured during calibration, select Abort Calibration in the Calibration Command parameter to restore the previous calibration values, and try again. Cold Junction Compensation Calibration 1. Click on Calibration Channel Select and select one channel, or both channels at once. Select Cold Junction 0, Cold Junction 1, or Both Cold Junction. Publication 1734-UM004A-EN-p - July 2001

48 4-6 Calibrating Your Thermocouple or RTD Input Module 2. Click on Calibration Command and select Begin CJC Calibration. Click the Download to Device button. Click on calibration command and select Begin CJC calibration. Then download to the module. 3. Using a 1734-RTB removable terminal block, apply 1000Ω to the selected CJC channel (see Page 4-2). 4. Select Accept Low CJC and download to the device. 5. Using a 1734-RTB removable terminal block, apply 3000Ω to the selected CJC channel. Publication 1734-UM004A-EN-p - July 2001

49 Calibrating Your Thermocouple or RTD Input Module Select Accept High CJC and download to the device. If RSNetWorx reports a communication error, or if an error occured during this calibration, abort calibration and try again. 7. Calibration is complete as soon as High and Low calibration for the selected channels are done successfully. When the calibration is accepted by the module, it sets the Bat Cal Status bit for the channel to Good Calibration, as shown here. Repeat above steps to calibrate the other channel if you chose to only calibrate one channel at a time. Both high and low inputs must be accepted in order for the module to finish calibration. Calibration is now complete. If the module does not accept calibration (status indicator still blinking), click on Calibration Command and select Abort Calibration, apply and start over. Publication 1734-UM004A-EN-p - July 2001

50 4-8 Calibrating Your Thermocouple or RTD Input Module Tools and Equipment Required to Calibrate Your RTD Module To calibrate your RTD module, you will need the following tools and equipment 1734-IR2 : Tool or Equipment: Precision Resistors Precision Voltage Source Description: High precision resistors: 100Ω, 0.04%, 5ppm/ o C 500Ω, 0.03%, 5ppm/ o C or Calibrated resistor Decade Box, 0.05% +100mV, 1mV resolution - accuracy +3µV or better Calibrating the RTD Input Module To calibrate your RTD input module, connect the module in a DeviceNet system similar to that shown below. IMPORTANT Apply power to the power supply and module for at least 10 minutes before calibrating the module.. PDN IR2 DeviceNet Input Channel 0 Channel 0 100Ω for Low; 500Ω for High Channel 0 Connect to 0 and 2 Channel 1 Connect to 1 and Decade Resistance Box (0.05% or better) Publication 1734-UM004A-EN-p - July 2001

51 Calibrating Your Thermocouple or RTD Input Module Double-click on the icon to bring up the general parameter screen. Click on Device Parameters to view the parameters 2. The EDS editor may ask you if you want to upload the configuration from the device. Click on Upload. 3. Select Calibration at the Group pulldown. Click on Calibration Command and select Begin Calibration. Click the Download to Device button. Both channel status indicators turn off. This is the group pulldown. Select Begin Calibration on the calibration command pulldown. Publication 1734-UM004A-EN-p - July 2001

52 4-10 Calibrating Your Thermocouple or RTD Input Module 4. Click on Calibration Channel Select to bring up your channel selections. Select a channel, or select both. Click the Download to Device button. Click on Single while doing this action. Select the desired channel, or select Both Channels. 5. Using a 0.05% accurate resistance box, apply Ω to the input. Click on Accept Low Calibration. Click on the Download to Device button. The status indicator(s) for the channel(s) being calibrated will blink. Publication 1734-UM004A-EN-p - July 2001