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This document explores various options for connector panels designed to enhance connectivity and ensure lightning protection for critical systems. It covers single and multi-panel configurations, including options for serial, USB, and Ethernet connections. Each panel type is evaluated for advantages and disadvantages, considering flexibility, ease of installation, and real estate efficiency. The inclusion of lightning protection solutions, both passive and active, ensures the safety of your equipment from electrical surges. This comprehensive guide aims to assist in selecting the right interface connections for your specific needs.
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NDAQ Connector Panel Contents Interface Connections Panel Options Lightning Protection ???
Interface Connections • CPU • 4 serial ports: each port requiring 7 connections • USB port • 2 Ethernet ports: Allow for hub option in housing • Serial • 8 serial ports: 7 connections • Rs-232: Tx, Rx, RTS, CTS, Sig. ground, power, ground • RS-485: +Tx, -Tx, +Rx, -Rx, Sig ground, power, ground • A/D • 8 channels: 5 connections • + input, - input, shield, power, ground • Miscellaneous • Communication • GPS assume sensors housed internally • Pressure static port • Power input/output • On/Off switch • spare connector hole }
Panel Options Single Panel Single Hole Multi-Panel Multi-Cable/Panel
Single Hole Cables get routed through one or multiple holes to internal connector panel(s) • Advantages • flexibility • no special connectors • Disadvantages • confusion in the box • hard to configure in the field • still need a connector interface • weatherproofing
Single Panel One Interface Panel for all Connectors • Disadvantages • real estate space • no flexibility • Advantages • field easy • standardize connectors • construction / installation
Multi-Cable/Panel Multiple cables into one connector. The interface panel could be single or multiple. • Disadvantages • requires breakout box(s) • special cables • Advantages • real estate friendly (?) • less cables over long runs
Multi-Panel Individual connectors mounted to special panels serial panel, A/D panel, CPU panel • Disadvantages • loss of real estate • higher costs • Advantages • simpler board design • flexibility in making changes • Individual interface boards
Lightning protection • Passive • Transorbs, gas discharge tube, MOV, fuse, etc. • Off-the-Shelf • Active • Optical • Many vendors out there • Typical 2500 VAC isolation • Costs: $50 to $200 (4 signal lines)