Chapter 1: DescriptionLibrary ComponentsQuantum Scalar i40 and Scalar i80 User’s Guide 7Power Supply The Scalar i40 and Scalar i80 libraries support single powerconfigurations consisting of a single AC line input and single DC powersupply. The Scalar i80 library supports a redundant power configurationconsisting of a dual AC line input and dual DC power supplies.If you have a Scalar i80 and are only using one power supply, the powersupply should be installed in the upper power supply slot, and a fillerplate must cover the empty power supply slot (see Figure 5 on page 9).If you are using redundant power, you can hot add or hot swap a powersupply (power to the library remains on while you add or exchange thehardware).The Scalar i40 power supply cannot be installed in a Scalar i80. However,the Scalar i80 power supply works in either the Scalar i40 or theScalar i80.Warning: The power outlet must be available near the library andmust be easily accessible.The power system consists of the following components:• Power supply• AC power cordThe power supply has one status LED. For more information, see PowerSupply LED on page 255.For information on removing and replacing power supplies, seeRemoving and Installing a Power Supply on page 220.System Control Board The system control board (SCB) contains the library firmware andprocessor. It manages the entire library, including the operator paneland robot, and is responsible for running system tests to ensure that thelibrary is functioning properly. The SCB has two Ethernet ports:• Left port — for remote management (Web client)• Right port — for service only. In rare cases, you may need to changethe IP address of the port if it conflicts with your library IP address(see Configuring the Service Port on page 77).See Figure 4 on page 9 and Figure 5 on page 9 for port locations.
