3Com 7750 User Manual
Poe power rack
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Also See for 7750:
- Command reference manual (1177 pages) ,
- Configuration manual (940 pages) ,
- Quick reference manual (94 pages)
Related Manuals for 3Com 7750
Summary of Contents for 3Com 7750
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Page 1: User Manual
3Com Switch 7750 PoE Power Rack User Manual www.3com.com Part No. DUA1688-3AAA01 Published: June 2005... -
Page 2: Table Of Contents
Table of Contents Introduction............................... 2-1 Switch 7750 PoE Power Rack ......................2-1 Architecture and Configurations......................2-1 Features .............................. 2-2 Chapter 2 System Description ........................ 2-1 Overview ............................. 2-1 2..1 Power Supply Modules......................2-1 2..2 PoE Power Rack ........................2-1 2..3 Power Supply Module Visual indicators ................2-1 System Controller.......................... -
Page 3: Introduction
Switch 7750 PoE Power Rack The 3Com Switch 7750 PoE power rack is a modular stand-alone Power over Ethernet power source. The PoE Power Rack provides a total of 2500Watts of DC power with N+1 power redundancy for PoE powered devices connected to the Switch 7750 Chassis. -
Page 4: Features
PoE Power Rack Installation Guide Introduction The PoE Power Rack is configured with one power supply module as standard. The power rack may be configured with up to 3 power supplies based on the power and power redundancy requirements. Features The PoE Power Rack is compatible with a wide range of input voltages from 90 to 290 VAC and uses 20 A/250 VAC EN60320 C20/C19 appliance coupler connectors and connector plugs. -
Page 5: Chapter 2 System Description
DC power is supplied to the power bus by the power supply modules. (Note: The PoE Power Supply Module (3C16884) is interchangeable between the Switch 7750 PoE Power Rack and the Switch 8800 PoE Power Rack. NO other components are interchangeable). -
Page 6: System Controller
PoE Power Rack Installation Guide Chapter 2 System Description Condition AC OK (green) DC OK (green) Fault (Red) AC not present in any power supply module Boost stage Failure Over Voltage Latched shutdown Over current Any internal failure The Front panel of the power supply module is as follows. Figure 2-2 (3C16884) Power Supply Module front panel System Controller The PoE Power Rack has a system controller at the rear of the chassis. - Page 7 Switch 7750 (connect the RS232 connector end to the PoE Power Rack and connect the RJ45 cable end to the port labeled "Com" next to the PoE DC terminal block on the back of the Switch 7750). Using CLI commands, the User can receive and read system information or command the operation of the PoE Power Rack.
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Page 8: Ac Distribution Panel
There is an AC power ON/OFF switch beside each AC input socket. DC Distribution Panel The DC distribution panel has two 10 mm Copper bus bars and two cables to connect the power rack the Switch 7750 chassis. Figure 2-4 Distribution panel... -
Page 9: Chapter 3 Safety
PoE Power Rack Installation Guide Chapter 3 Safety Chapter 3 Safety Safety Statements Please read and follow all safety instructions and warnings before servicing the PoE Power Rack. Reference the power supply module product manuals for additional safety statements specific to the power supply modules. The device must be in a restricted access area (dedicated equipment rooms or equipment closets are examples of these areas). - Page 10 Follow all safety warnings and practices when servicing this equipment. Insure that the PoE Power Rack AC power cords are unplugged from the PoE Power Rack before connecting the DC output cables to the PoE Power Rack and the Switch 7750. Exercise care when servicing this area.
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Page 11: Chapter 4 Installation And Debugging
PoE Power Rack Installation Guide Chapter 4 Installation and Debugging Chapter 4 Installation and Debugging Introduction This section outlines the sequence for installing the PoE Power Rack, including plug-in modules, as well as test procedures for verifying the integrity of the installation. 4..1 Guidelines The device must be installed to allow sufficient front and rear access. -
Page 12: Physical Mounting
The following installation sequence is recommended Physical mounting Installing power supply modules Frame grounding Connecting to Switch 7750 Chassis Connecting to AC utility/AC grounding Initializing the system Physical Mounting All items required for installation are contained within the packaging. Additional power supply modules are shipped separately. -
Page 13: Installing Power Supply Modules
PoE Power Rack Installation Guide Chapter 4 Installation and Debugging Installing Power Supply Modules Power supply modules are installed by sliding the module into the power rack, pushing until the power supply module is fully inserted, and close the handle on the power supply module. Verify that the AC power switches on the AC distribution panel are in the “OFF”... -
Page 14: Dc Connection
1.) Insure AC power is removed from the PoE Power Rack before connecting the DC output cables. 2.) The DC terminal block for PoE input power is located on the back of the SWITCH 7750 chassis. 3.) Using a #2 Philips screwdriver, remove the two Philips head screws that attach the clear DC terminal block cover from the SWITCH 7750. -
Page 15: Connecting To Ac Utility/ Ac Grounding
PoE Power Rack Installation Guide Chapter 4 Installation and Debugging the "NEG (-)" terminal stud. Replace the washer on the terminal stud and securely fasten the 13 mm nut on the DC terminal stud. 5) Remove one 10 mm nut and washer from the "RTN (+)" DC terminal stud and attach the black DC cable to the "RTN (+)"... - Page 16 PoE Power Rack Installation Guide Chapter 4 Installation and Debugging on each power supply module.Wait approximately 10-30 seconds to allow the system to go through its start-up procedure. Verify that the green LED on the controller panel is on. Use a digital voltmeter to verify that the DC output voltage is approximately -54VDC For systems with more than one power supply module installed, turn one of the AC power input switches to “OFF”...
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Page 17: Chapter 5 Engineering, Maintenance And Troubleshooting
PoE Power Rack Installation Guide Chapter 4 Installation and Debugging Chapter 5 Engineering, Maintenance and Troubleshooting Maintenance and Troubleshooting This section provides field maintenance information and troubleshooting procedures for the PoE Power Rack and power supply modules. Review the safety information in section 3 of this manual before performing maintenance procedures Warning: All procedures described in this section must be performed by qualified maintenance personnel only.