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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. All cables must be routed through 

insulated conduit openings, All service operation can be completed on the front of the power rack. 

4..2  EMI Considerations 

When running the DC output cables, ensure that the positive and negative cables are routed so as no loops 

are created. 

4..3  Installation Tools and Hardware 

The following tools and hardware are required to install and test the PoE Power Rack: 

z

 

#2 Philips screwdriver 

z

 

Nut driver set or socket set  with 10 mm and 13 mm sockets 

z

 

Adjustable wrench 

z

 

Digital meter with an accuracy of ± 0.02% 

z

 

Small and medium flat screw driver 

z

 

ESD wrist strap 

4..4  Safety 

 

  Warning 

z

 

Only qualified personnel can install and service the PoE Power Rack. 

z

 

Hazardous energy is present in the device and on the interface cables, which can cause electric shock or cause serious injury or death 
if safety precautions are ignored. Follow all safety warnings and practices when servicing this equipment. 

 

4..5  Installation Sequence 

Review all safety warnings in Section 3 before beginning the installation process. Observe all warnings and 

labels on the equipment. 

The PoE Power Rack consists of a chassis which includes AC and DC distribution modules, one system 

controller, and power supply module bays. Refer to Figures 2-6 and figure 2-7 for relationship of components. 

4-1 

Summary of Contents for 7750 Series

Page 1: ...3Com Switch 7750 PoE Power Rack User Manual www 3com com Part No DUA1688 3AAA01 Published June 2005 i...

Page 2: ...3 1 Warning Statements and Safety Symbols 3 1 Precautions 3 1 Chapter 4 Installation and Debugging 4 1 Introduction 4 1 4 1 Guidelines 4 1 4 2 EMI Considerations 4 1 4 3 Installation Tools and Hardwa...

Page 3: ...modules maximum 3 a system controller and power distribution module in a 4 RU high chassis The system controller provides local monitoring and control of the device The general configuration is as fol...

Page 4: ...0320 C20 C19 appliance coupler connectors and connector plugs Power factor is above 0 99 and efficiency is over 88 z Maximum device output is N 1 93A 54VDC z Power supply modules are hot swappable for...

Page 5: ...able between the Switch 7750 PoE Power Rack and the Switch 8800 PoE Power Rack NO other components are interchangeable 2 2 PoE Power Rack Up to three power supply modules can be mounted in each PoE Po...

Page 6: ...red LED ALM to indicate operational and alarm status are located on the front panel of the PoE Power Rack controller When the system has an alarm such as input failure input over voltage or under vol...

Page 7: ...nt limit over temperature and module shut down z Communicate with deamon systems The controller supports interface to the Switch 7750 chassis through RS232 or RS485 cable connection A cable is provide...

Page 8: ...20 AC input sockets on the rear panel of the device rated at 20A 250VAC Each socket supplies one power supply module There is an AC power ON OFF switch beside each AC input socket DC Distribution Pane...

Page 9: ...s specified on labels or in the product documentation z Refer to the product documentation for the proper hardware Use only the parts specified in the equipment documentation z Improper fuses circuit...

Page 10: ...are present in the device and on the DC output cables that can shock or cause serious injury Follow all safety warnings and practices when servicing this equipment Insure that the PoE Power Rack AC po...

Page 11: ...install and test the PoE Power Rack z 2 Philips screwdriver z Nut driver set or socket set with 10 mm and 13 mm sockets z Adjustable wrench z Digital meter with an accuracy of 0 02 z Small and medium...

Page 12: ...emove the crate top and sides and the packing material If possible recycle the packing crate and the packing material If not dispose of properly according to local codes and regulations 3 The followin...

Page 13: ...plane connectors 3 Close the handle on the front of the power supply module and verify that the module is firmly seated See Figure4 2 for the power supply module installation Figure 4 2 Installing pow...

Page 14: ...rminal protector plate 5 Remove one 13 mm nut and washer from the NEG DC terminal stud and attach the blue DC cable to the NEG terminal stud Replace the washer on the terminal stud and securely fasten...

Page 15: ...AC mains connection must follow this procedure 2 Ensure that the AC input switches are in the OFF position 3 Plug the AC input power cord into the AC socket that corresponds to the power supply modul...

Page 16: ...voltmeter to verify that the DC output voltage is approximately 54VDC 2 For systems with more than one power supply module installed turn one of the AC power input switches to OFF to verify that the r...

Page 17: ...entative Table 5 1 Troubleshooting guide Controller alarm status Power supply module display Possible problems Possible solution RUN ALM NONE The AC power input circuit breakers has operated AC input...

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