Cisco IE-3000-8TC Installation Guide - Page 30
Verifying Switch Operation on Appendix A, Technical Specifications., overheating
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Preparing for Installation Chapter 2 Switch Installation • Personnel responsible for the application of safety-related programmable electronic systems (PES) shall be aware of the safety requirements in the application of the system and shall be trained in using the system. • This product is grounded through the DIN rail to chassis ground. Use zinc-plated yellow-chromate steel DIN rail to assure proper grounding. The use of other DIN rail materials (such as aluminum, plastic, and so on) that can corrode, oxidize, or are poor conductors can result in improper or intermittent grounding. Secure the DIN rail to the mounting surface approximately every 7.8 in. (200 mm), and use end-anchors appropriately. When determining where to place the switch, observe these guidelines: • Before installing the switch, first verify that the switch is operational by powering it on and running POST. Follow the procedures in the "Verifying Switch Operation" section on page 2-11. • For 10/100 ports and 10/100/1000 ports, the cable length from a switch to an attached device cannot exceed 328 feet (100 meters). • For 100BASE-FX fiber-optic ports, the cable length from a switch to an attached device cannot exceed 6562 ft (2 km). • Operating environment is within the ranges listed in Appendix A, "Technical Specifications." • Clearance to front and rear panels meets these conditions: - Front-panel LEDs can be easily read. - Access to ports is sufficient for unrestricted cabling. - Front-panel direct current (DC) power and relay connector is within reach of the connection to the DC power source. • Airflow around the switch and through the vents is unrestricted. To prevent the switch from overheating, there must be the following minimum clearances: - Top and bottom: 4.13 in. (105 mm) - Exposed side (not connected to the module): 3.54 in. (90 mm) - Front: 2.56 in. (65 mm) • Temperature surrounding the unit does not exceed 140°F (60°C). Note When the switch is installed in an industrial enclosure, the temperature within the enclosure is greater than normal room temperature outside the enclosure. The temperature inside the enclosure cannot exceed 140°F (60°C), the maximum ambient enclosure temperature of the switch. • Cabling is away from sources of electrical noise, such as radios, power lines, and fluorescent lighting fixtures. • Connect the unit only to a Class 2 DC power source. Caution This equipment is only suitable for use in Class I, Division 2, Groups A, B, C, D, or nonhazardous locations. Cisco IE 3000 Switch Hardware Installation Guide 2-4 OL-13017-01