DATA SHEET Form 2080-180808 PAGE 1 HART SNAP I/O MODULES Features > Channel-to-channel isolation > UL approved > Rugged packaging and convenient pluggable wiring. Accepts up to 14 AWG wire. > Factory calibrated; no user adjustment necessary > Communicates digitally with HART current loop devices DESCRIPTION HART(R) SNAP I/O modules for analog current input and output provide communication with other Highway Addressable Remote Transducer (HART) current loop devices. Each channel on each module features an integrated HART modem that allows the channel to communicate digitally with a HART FSK (frequency-shift keying) signal superimposed onto the analog 4-20 mA current loop. The channel is a master device when used together with SNAP PAC brains or controllers to communicate with other HART current loop devices in either point-to-point or multidrop configurations. Current input and output modules are available. Both provide channel-to-channel isolation, are UL approved, and are factory calibrated. SNAP-AIMA-iH Input Module Isolation All SNAP analog modules are transformer isolated as well as optically isolated from all other modules and from the I/O processor. In addition, the modules in this data sheet have all channels isolated from each other. Channel-to-channel isolation gives you complete freedom from ground-loop problems even on grounded devices connected to channels on the same module. Transformer isolation prevents ground loop currents from flowing between field devices and causing noise that produces erroneous readings. Ground loop currents are caused when two grounded field devices share a connection, and the ground potential at each device is different. The SNAP-AIMA-iH provides two channels of isolated analog input current with a range of 4-20 mA. External loop power supplies are required for current loops. Transformer isolation provides 1500 V of transient (1500 V for 1 s) protection for control electronics from industrial field signals. The SNAP-AIMA-iH is categorized by the HART protocol as a current input connection type, which means that the module is a low impedance device. USING HART SNAP I/O MODULES SNAP-AOA-23-iH Output Module The SNAP-AOA-23-iH provides two channels of isolated analog output current with a range of 4-20 mA. External loop power supplies are required for current loops. The SNAP-AOA-23-iH is categorized by the HART protocol as a current output device, which means that each channel controls the loop current and is a high impedance device. HART SNAP I/O modules are part of the SNAP PAC System. They mount on SNAP PAC racks alongside other SNAP I/O modules (analog, digital, and serial), so you have the combination of I/O you need at any location. Use two standard 4-40 x 1/2 truss-head Phillips hold-down screws to secure both sides of the module. Part Numbers Part Description SNAP-AIMA-iH Isolated two-channel analog current input, HART communication, 4-20 mA SNAP-AOA-23-iH Isolated two-channel analog current output, HART communication, 4-20 mA OPTO 22 * 800-321-6786 * 1-951-695-3000 * www.opto22.com * sales@opto22.com (c) 2014-2018 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. DATA SHEET Form 2080-180808 PAGE 2 As shown in the diagram at right, the SNAP PAC I/O unit can communicate over a standard Ethernet network to databases, HMIs, and other devices. System Architecture - HART SNAP I/O Modules These modules require a SNAP PAC brain or rack-mounted controller for I/O processing and communications. They are not compatible with legacy brains and controllers. HART SNAP I/O modules are designed for use with a SNAP PAC programmable automation controller and PAC Control automation software. Several HART-specific PAC Control commands (available in PAC Control version 9.4 and higher) make it possible for these modules to communicate any HART command that adheres to the HART requestresponse model or the burst message model. In your PAC Control strategy you will need to assemble all request data sent to the module and to parse all response data returned by the module. In this way the modules can communicate with any wired HART device using any HART command. For details and examples on all PAC Control commands, see form 1701, the PAC Control Command Reference, available at www.opto22.com. The HART-specific PAC Control commands include: * Get HART Unique Address * Send/Receive HART Command * Receive HART Response * Receive HART Burst Response In addition, the following string commands (also in PAC Control version 9.4 and higher) should be useful: * Pack Float into String * Pack Integer 32 into String * Pack Integer 64 into String * Pack String into String * Unpack String HART Developer Toolkit HART SNAP I/O modules can also be used without PAC Control. Opto 22 offers the SNAP PAC .NET HART developer toolkit so you can easily integrate HART SNAP I/O modules into an existing .NET/Mono application. This toolkit is available for download from www.opto22.com. OPTO 22 * 800-321-6786 * 1-951-695-3000 * www.opto22.com * sales@opto22.com (c) 2014-2018 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. DATA SHEET Form 2080-180808 PAGE 3 LEDs Each module includes four LED indicators on the top of the module. LEDs 1 and 3 refer to channel 0; LEDs 2 and 4 refer to channel 1. LED 1 or 2 Status Solid Green Solid Red LED 3 or 4 Activity Description Blinking Green HART channel is operational; loop voltage and current are within limits. Blinking Red HART communication error: * On a SNAP-AOA-23-iH, check loop voltage. Excessive load resistance or an incorrect loop power supply may cause voltage to be too low. * On a SNAP-AIMA-iH, check loop current to make sure it is between 3.9 mA and 20.2 mA. NOTE: If loop voltage and current are correct, contact Product Support. OFF -- Current loop open or loop voltage is zero. Implies that the channel is not being used. Specifications: SNAP-AIMA-iH Input Range Nominal Full 4 to 20 mA 3.2 to 24 mA Maximum Survivable Input 40 V or 160 mA Impedance 230 Ohms nominal Resolution 0.8 microamps Accuracy +/- 10 microamps Response Time (% of span/delta I/delta time) 99.9%/20.7mA/10 ms Gain Temperature Coefficient 30 ppm/ C Offset Temperature Coefficient 15 ppm/ C DC Common Mode Rejection >-120 dB AC Common Mode Rejection >-120 dB @ 60 Hz Maximum Operating Common Mode Voltage 250 V continuous 1500 V transient (1 s) Isolation: Channel-Channel 250 V continuous 1500 V transient (1 s) Power Requirements 5 VDC (+/- 0.15) @ 150 mA Ambient Temperature: Operating Storage -20 C to 70 C -40 C to 85 C Humidity 5-95%, non-condensing Torque, hold-down screws 4 in-lb (0.45 N-m) Torque, connector screws 5.26 in-lb (0.6 N-m) Agency Approvals UL, CE, RoHS, DFARS Warranty Lifetime Specifications: SNAP-AOA-23-iH Output Range Nominal Full 4 to 20 mA 3.2 to 24 mA External Loop Voltage Range Nominal 12-36 VDC 24 VDC Maximum Load Resistance at Specified Loop Voltage 12 VDC 24 VDC 36 VDC 300 Ohms 850 Ohms 1350 Ohms Resolution 5 microamps Accuracy +/- 20 microamps Response Time (% of span/delta I/delta time) 99.9%/20.7 mA/400 ms Gain Temperature Coefficient -50 ppm/ C Offset Temperature Coefficient -25 ppm/ C DC Common Mode Rejection >-120 dB AC Common Mode Rejection >-120 dB @ 60 Hz Maximum Operating Common Mode Voltage 250 V continuous 1500 V transient (1 s) Common Mode Resistance >1000 megohms Isolation: Channel-Channel 250 V continuous 1500 V transient (1 s) Power Requirements 5 VDC (+/- 0.15) @ 150 mA Ambient Temperature: Operating Storage -20 C to 70 C -40 C to 85 C Humidity 5-95%, non-condensing Torque, hold-down screws 4 in-lb (0.45 N-m) Torque, connector screws 5.26 in-lb (0.6 N-m) Agency Approvals UL, CE, RoHS, DFARS Warranty Lifetime OPTO 22 * 800-321-6786 * 1-951-695-3000 * www.opto22.com * sales@opto22.com (c) 2014-2018 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. DATA SHEET Form 2080-180808 PAGE 4 WIRING DIAGRAMS - SNAP HART MODULES SNAP-AIMA-iH External Loop Power Supply External Loop Power Supply + - + Transmitter T Transmitter - + + External Loop Power Supply T + - - - T Transmitter + - CH 0 1 2 OR 1 CH 0 2 3 4 OR CH 0 1 2 CH 1 CH 0 1 2 3 4 5 6 7 8 SNAP-AOA-23-iH External Loop Power Supply External Loop Power Supply + - - + + Receiver R Receiver + External Loop Power Supply R + - - - R Receiver + - CH 0 1 2 OR 1 CH 0 2 3 CH 0 4 OR CH 0 1 2 CH 1 1 2 3 4 5 6 7 8 OPTO 22 * 800-321-6786 * 1-951-695-3000 * www.opto22.com * sales@opto22.com (c) 2014-2018 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. DATA SHEET Form 2080-180808 PAGE 5 WIRING DIAGRAMS (CONTINUED) Wiring shown on the previous page is typical use. The wiring on this page is nonstandard. Use this page only if: * You are using the HART protocol but not using the analog signal. * Your HART network includes too many devices for a standard 4-20 mA loop. This alternative wiring makes sure all HART devices on your network have adquate power. Multidrop Wiring--SNAP-AIMA-iH + DC Power Supply SNAP-A IMA-iH CH0 + - + R + + R R - - - - Multidrop Wiring--SNAP-AOA-23-iH 230-600 Ohms + DC Power Supply SNAPAOA-2 3-iH CH0 + - + T - + + T T - - - OPTO 22 * 800-321-6786 * 1-951-695-3000 * www.opto22.com * sales@opto22.com (c) 2014-2018 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. DATA SHEET Form 2080-180808 PAGE 6 DIMENSIONAL DRAWINGS OPTO 22 * 800-321-6786 * 1-951-695-3000 * www.opto22.com * sales@opto22.com (c) 2014-2018 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. DATA SHEET Form 2080-180808 PAGE 7 DIMENSIONAL DRAWINGS IMPORTANT: The mounting rack connector has 24 pins; the module connector has 20 pins. The extra pins on the mounting rack connector prevent misalignment of the module during installation. OPTO 22 * www.opto22.com 43044 Business Park Dr. Temecula, CA 92590-3614 SALES * sales@opto22.com 800-321-6786 * 1-951-695-3000 SUPPORT * support@opto22.com 800-835-6786 * 1-951-695-3080 (c) 2014-2018 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. More about Opto 22 PRODUCTS * Opto 22 develops and manufactures reliable, easy-to-use, open standards-based hardware and software products. Industrial automation, process control, building automation, industrial refrigeration, remote monitoring, data acquisition, and industrial internet of things (IIoT) applications worldwide all rely on Opto 22. groov EPIC(R) System Opto 22's groov Edge Programmable Industrial Controller (EPIC) system is the culmination of over 40 years of experience in designing products for the automation industry. groov EPIC gives you an industrially hardened system with guaranteed-for-life I/O, a flexible Linux(R)-based controller with gateway functions, and software for your IIoT application or any application. groov EPIC I/O Ignition Edge(R) from Inductive Automation(R), with OPC-UA drivers to Allen-Bradley(R), Siemens(R), and other control systems, and MQTT/Sparkplug communications for efficient IIoT data transfer groov Edge Appliance Visualization, data handling, and connectivity in a compact, industrial box: that's the groov Edge Appliance. Included are: * groov View for building and viewing operator interfaces on PCs and mobile * Node-RED for building simple logic flows * Ignition Edge(R) from Inductive Automation(R), for OPC-UA drivers and MQTT/Sparkplug IIoT communications Older products From solid state relays (our first products) to world-famous G4 and SNAP I/O, to SNAP PAC controllers, Opto 22 products last a long time. You can count on us to give you the reliability and service you expect. I/O provides the local connection to sensors and equipment. groov I/O offers up to 24 channels on each I/O module, with a spring-clamp terminal strip, integrated wireway, and swingaway cover. QUALITY Founded in 1974, Opto 22 has established a worldwide reputation for high-quality products. All are made in the U.S.A. at our manufacturing facility in Temecula, California. Opto 22 I/O is so reliable, we can afford to guarantee it for life. groov I/O is hot swappable, UL Hazardous Locations approved, and ATEX compliant. Because we test each product twice before it leaves our factory rather than testing a sample of each batch, we can guarantee most solid-state relays and optically isolated I/O modules for life. groov EPIC Controller The heart of the system is the groov EPIC controller. It handles a wide range of digital, analog, and serial functions for data collection, remote monitoring, process control, and discrete and hybrid manufacturing. In addition, the EPIC provides secure data communications among physical assets, control systems, software applications, online services, and more, both on premises and in the cloud. Configuring and troubleshooting I/O and networking is easier with the EPIC's integrated high-resolution touchscreen. Authorized users can see your groov View HMI locally on the touchscreen or on a monitor connected via the HDMI or USB ports. groov EPIC Software Software includes: * Flowchart-based PAC Control for control programming, or build your own custom application with optional secure shell access * groov View for building and viewing your own deviceindependent HMI * Node-RED for creating simple logic flows from pre-built nodes OPTO 22 * www.opto22.com 43044 Business Park Dr. Temecula, CA 92590-3614 FREE PRODUCT SUPPORT Opto 22's California-based Product Support Group offers free, comprehensive technical support for Opto 22 products from engineers with decades of training and experience. Support is available in English and Spanish by phone or email, Monday-Friday, 7 a.m. to 5 p.m. PST. Support is always available on our website, including how-to videos, user's guides, the Opto 22 KnowledgeBase, troubleshooting tips, and OptoForums. In addition, free hands-on training is available at our Temecula, California headquarters, and you can register online. PURCHASING OPTO 22 PRODUCTS Opto 22 products are sold directly and through a worldwide network of distributors, partners, and system integrators. For more information, contact Opto 22 headquarters at 800-321-6786 (toll-free in the U.S. and Canada) or +1-951-695-3000, or visit our website at www.opto22.com. SALES * sales@opto22.com 800-321-6786 * 1-951-695-3000 SUPPORT * support@opto22.com 800-835-6786 * 1-951-695-3080 (c) 2006-2018 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. Form 1335-180323