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SNAP-AITM-8-FM Datasheet(PDF) 9 Page - Opto Electronics Co,. LTD |
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SNAP-AITM-8-FM Datasheet(HTML) 9 Page - Opto Electronics Co,. LTD |
9 / 46 page SNAP Analog Input Modules Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com 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 © 2001–2014 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. PAGE 9 Current Input Module, -20 mA to +20 mA, 32 Channels Specifications Description The SNAP-AIMA-32 and SNAP- AIMA-32-FM modules provide 32 channels of input with an input range of -20mA to +20mA. The SNAP-AIMA- 32-FM is Factory Mutual approved. Check the table on page 3 for I/O processor compatibility. Dimensional drawings are on page 39. These modules DO NOT supply loop excitation current. Channels are not isolated from each other. Since all inputs share a common reference, the module must be installed at the beginning or end of a typical 4–20 mA loop. If you use both standard and self-sourcing transmitters, put the transmitters on different modules or use different power supplies. (If you need channels that are isolated from each other on the same module, see Opto 22 form #1182.) Wiring SNAP TEX cables and a breakout rack are available separately for wiring points to field devices (see form #1756, the SNAP TEX Cables & Breakout Boards Data Sheet). The SNAP-HD-BF6 cable connects the module to the breakout rack, which can then be wired to field devices. (NOTE: The SNAP-HD-CBF6 wiring harness with flying leads is not recommended for this module.) CAUTION: We strongly recommend that you use the breakout rack with these modules. Miswiring of any point on the module can cause severe out-of-warranty damage. The breakout rack protects the module from many wiring errors. if you are using the module with loop power (2-wire) negative common devices, connect to the SNAP-AIMA-HDB (or -FM) rack. If you are using the module with self-powered devices (4-wire) or with devices that share a common positive connection, do not use the SNAP-AIMA-HDB (or -FM) boards, which have a current limiting diode. Instead, wire to the SNAP- AIV-HDB or SNAP-AIV-HDB-FM. Correcting for Inverted Scaling Positive readings for these modules appear as negative values. Therefore, in order to obtain meaningful readings, use the scaling feature in PAC Control as follows: 1. In the Add or Edit Analog Point dialog box for each point, choose the scalable version of the module. 2. Under Scaling, scale each point negatively as shown below: Input Range -20 mA to +20 mA Over-Range Limits From -22 to +22 mA (+/-20 mA range) Resolution 0.8 microamps Input Filtering -3 dB @ 31 Hz Data Freshness (Max) 1.15 s DC Common Mode Rejection >-120 dB AC Common Mode Rejection >-120 dB @ 60 Hz Maximum Survivable Input 36 mA or 9 VDC Maximum Operating Common Mode Voltage 250 V Accuracy 0.1% (20 microamps) DRIFT: Gain Temperature Coefficient 30 PPM/ °C DRIFT: Offset Temperature Coefficient 15 PPM/ °C Isolation 1500 V, field to logic Power Requirements 5 VDC (±0.15 ) @ 150 mA Input Resistance - Single Ended 100 ohms (each channel) Operating Temperature 0 °C to 70 °C Storage Temperature -40 °C to 85 °C Torque, hold-down screws 4 in-lb (0.45 N-m) Torque, connector screws 5.26 in-lb (0.6 N-m) Agency Approvals SNAP-AIMA-32: UL, CE, RoHS, DFARS. SNAP-AIMA-32-FM: CE, FM, RoHS, DFARS Warranty Lifetime Part Number Description SNAP-AIMA-32 SNAP-AIMA-32-FM 32-channel analog current input, -20mA to +20mA SNAP-HD-BF6 Wiring harness for SNAP-AIMA-32 modules and breakout racks SNAP-AIMA-HDB SNAP-AIMA-HDB-FM Breakout racks for SNAP-AIMA-32 and SNAP-AIMA-32-FM |
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