5 Commissioning and operation5.1 Adding expansions to the XP-50332 XP-503 04/2020 MN048014 EN Eaton.com5 Commissioning and operation5.1 Adding expansions to the XP-5035.1.1 General prerequisitesLimitation of LiabilityAll technical data, certifications, and approvals will cease to apply/be void if expansions other thanthose approved by Eaton are used.We will not assume liability for functional limitations resulting from the use of third-party devices andcomponents.CAUTIONAll cards and assembly parts are electrostatic-sensitive.Follow all ESD safety instructions.The symbol to the left is used to indicate the use of electrostatic-sensitivecomponents.PrecautionsCAUTIONElectronic assembly parts are extremely sensitive to electrostatic discharges.Because of this, it is necessary to take precautions whenever handling the cards.Please refer to the guidelines for electrostatic-sensitive components for moreinformation (ESD guidelines). Before plugging in or disconnecting components or expansion modules,disconnect the XP-503 from the power supply. Before plugging in the cables, you will need to bring the static charge on your bodyto the same potential as the charge on the XP-503 and the cables.To do this, briefly touch the metal housing. Discharge the electrostatic charge on your tools. Wear an anti-static wrist strap when handling components. Leave components and expansion modules in their packaging untilright before you install them. Grab components and expansion modules from the edge only –do not touch connection pins or traces. Never run the XP-503 with the housing open.CAUTIONPlease note:Only service personnel should be allowed to open the XP-503.