DATA SHEET SNAP Analog Input Modules Form 1065-150206 SNAP Analog Input Modules Features Resolution = 0.004% of nominal range Two, 4, 8, or 32 single-ended inputs per module Out-of-range indication Factory calibrated no user adjustment necessary SNAP Analog Input Modules Description SNAP I/O analog input modules are part of Part Number Opto 22s SNAP PAC System. All of these See modules mount on a SNAP PAC rack with a Part Description page SNAP PAC brain or R-series controller, either SNAP-AIARMS 2-channel 0 to 10 amp RMS AC/DC input 4 a standard wired model or a Wired+Wireless model. SNAP-AIMA 2-channel analog current input, -20 to +20 mA 6 SNAP-AIMA-4 4-channel analog current input -20 to +20 mA 6 A minimum number of SNAP module types support a full range of analog input SNAP-AIMA-8 8-channel analog current input -20 to +20 mA 8 requirements. These software-configurable SNAP-AIMA-32 32-channel analog current input -20 to +20 mA 9 modules handle a wide variety of signal SNAP-AIMA-32-FM* levels. They provide high resolution (0.004% SNAP-AIRATE 2-channel 025,000 Hz analog rate input 11 of nominal range) for precise signal levels, as 4-channel analog resistor/thermistor input, 40 K Ohms, SNAP-AIR40K-4 13 well as multiple-channel packaging. All 20 K Ohms, 10 K Ohms, or 5 K Ohms SNAP analog modules are factory calibrated SNAP-AIR400K-8 8-channel analog resistor/thermistor input, 400 K Ohms 14 and individually tested. Part numbers SNAP-AIRTD-1K 2-channel 1000 ohm platinum RTD input 18 ending in -FM are Factory Mutual approved. SNAP-AIRTD 2-channel 100 ohm platinum RTD input 18 SNAP analog input modules have an on- SNAP-AIRTD-10 2-channel 10 ohm copper RTD input 18 board microprocessor to provide module- level intelligence, which makes them an SNAP-AICTD 2-channel analog temperature input, ICTD 20 ideal choice for Original Equipment SNAP-AICTD-4 4-channel analog temperature input, ICTD 20 Manufacturers (OEMs). For additional SNAP-AICTD-8 8-channel analog temperature input, ICTD 22 information about the standalone operation 2-channel analog type E, J, or K thermocouple or -150 of SNAP analog modules, see Opto 22 form SNAP-AITM 23 to +150 mV input or -75 to +75 mV input 0876, SNAP I/O Module Integration Guide. 2-channel analog type B, C, D, G, N, T, R, or S thermo- SNAP-AITM-2 24 couple or -50 to +50 mV DC or -25 to +25 mV DC input Notes for legacy hardware: Some of these modules also work with older Opto 22 I/O 8-channel B, C, D, E, G, J, K, N, R, S, or T thermocou- SNAP-AITM-8 ple or -75 to +75 mV, -50 to +50 mV, or -25 to +25 mV 25 processors (brains or on-the-rack SNAP-AITM-8-FM* input controllers) and M-series or B-series racks. To SNAP-AIVRMS 2-channel 0 to 250 V RMS AC/DC input 26 check processor compatibility, see the table 2-channel analog voltage input -10 to +10 VDC or -5 to on page 3. SNAP-AIV 27 +5 VDC Specifications begin on page 4. For 4-channel analog voltage input -10 to +10 VDC or -5 to SNAP-AIV-4 27 dimensional drawings, see pages 3545. +5 VDC 8-channel analog voltage input -10 to +10 VDC or -5 to IMPORTANT: Any system using analog SNAP-AIV-8 29 +5 VDC sensors and input modules should be SNAP-AIV-32 32-channel analog voltage input -10 to +10 VDC or -5 calibrated annually for analog signals. For 30 SNAP-AIV-32-FM* to +5 VDC I/O units on a SNAP PAC System, use the PAC SNAP-AIMV2-4 4-channel -50 to +50 mV input or -25 to +25 mV input 32 Control commands Calculate and Set 4-channel -150 to +150 mV input or -75 to +75 mV Offset and Calculate and Set Gain. For SNAP-AIMV-4 33 input other Ethernet-based I/O units, you can also * Factory Mutual approved Opto 22 43044 Business Park Drive Temecula, CA 92590-3614 www.opto22.com PAGE SALES 800-321-6786 951-695-3000 FAX 951-695-3095 sales opto22.com SUPPORT 800-835-6786 951-695-3080 FAX 951-695-3017 support opto22.com 1 20012015 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.SNAP Analog Input Modules use PAC Manager software to calculate and set offset and and below zero. An example of this is the SNAP-AIV module, gain. which has a range of -10 to +10 VDC. Some modules are considered unipolar, which means the Isolation range starts or ends at zero. For example, the SNAP-AIVRMS module has a range of 0 to 250 VAC because AC current All SNAP analog input modules are isolated from all other cannot be negative. modules and from the SNAP I/O processor. The modules in this data sheet do not have channel-to-channel isolation, however. (If you need isolated analog modules, see Opto 22 Nominal Range and Over-range Limits form 1182.) All SNAP analog input modules have a nominal range for the Transformer isolation prevents ground loop currents from field signal and most support a 10% over-range limit. The flowing between field devices and causing noise that nominal range is the normal range of the field signal for the produces erroneous readings. Ground loop currents are module or point configuration. The over-range limit is the caused when two grounded field devices share a connection, maximum valid field signal the module or point configuration and the ground potential at each device is different. can read outside of the nominal range. For example, the over- range limits for the SNAP-AIV are -11 and +11 VDC, and for the Isolation also protects sensitive control electronics from SNAP-AIVRMS, the over-range limit is 275 VAC. industrial field signals. Some modules or point configurations do not support field IMPORTANT: Since these analog input modules provide signals outside of the nominal range. For example, points multiple single-ended input channels with a common configured as temperature inputs (thermocouple, RTD, ICTD) reference, the channels are not isolated from each other. (See do not support over-range readings. Opto 22 form 1182 for isolated modules.) When the field signal is outside of the over-range limits of the module, the brain will not be able to determine if the value is Bipolar and Unipolar Input Modules too high or too low, so it will return anout of rang value of - Most SNAP analog input modules are considered to be 32768.0 bipolar, which means the range extends equal amounts above Over-range limits only apply to input modules. Output modules are limited to their nominal ranges. Opto 22 43044 Business Park Drive Temecula, CA 92590-3614 www.opto22.com PAGE SALES 800-321-6786 951-695-3000 FAX 951-695-3095 sales opto22.com SUPPORT 800-835-6786 951-695-3080 FAX 951-695-3017 support opto22.com 2 20012015 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 SNAP Analog Input Modules Form 1065-150206