SNAP PAC System Architecture and Selection Guide

Optocoupler isolation: All solid-state modules provide 4000V transient isolation to separate field signals from control logic.

Galvanic Isolation: Each channel of certain modules (especially analog modules with - i) is isolated from each other, and the resistance between any two channel terminals is measured to be infinite.

Transformer isolation: The simulation module adopts transformer isolation to prevent noise and misreading caused by grounding loop current. The typical isolation voltage is 1500V.

SNAP TEX installation accessories

To simplify on-site wiring, Opto 22 offers SNAP TEX series accessories:

Prefabricated cables: SNAP-TEX-CBO6 (odd pin connection), SNAP-TEX-CBE6 (even pin connection), SNAP-TEX-CBS6 (no internal connection), length 6 feet, wire gauge 18 AWG.

Distribution board: SNAP-TEX-32 (32 way spring terminal, no fuse), SNAP-TEX-FB16-H/L (16 way, with fuses and LED indicators at each point, discontinued).

High density distribution rack: SNAP-IDC-HDB (input), SNAP-ODC-HDB (output), SNAP-UDC-HDB (universal), all provide LED status indication at each point and zone fuses.

DIN rail installation kit: suitable for power supply, controller, and rack. Specific accessory numbers can be found in the table on page 45 of the document.

Environmental specifications and certification

SNAP PAC system components typically meet the following environmental requirements:

Working temperature: -20 ° C to 70 ° C (some modules such as SNAP-AIRTD-8U can reach up to 80 ° C)

Storage temperature: -40 ° C to 85 ° C

Humidity: 5% to 95%, no condensation

Certification: UL 508C, CSA C22.2, IEC 68-2-6 (Vibration), ATEX (Partial Modules) RoHS、DFARS、UKCA

Most SNAP modules come with a lifetime warranty, while some special modules (such as the MA series with diagnostic switches) come with a 30 month warranty.