Eaton 91PS User And Installation Manual

Also see for 91PS: User and installation guide Safety and installation quick guide Safety and installation quick guide User and installation guide

Figure 17. Connections of the EPO switchA Normally open B Normally closedTable 18. Remote EPO wire terminationsFrom remote EPO switch To user interface terminal blockEPO in UPS cabinetRemarksNO 3–4NC 1–2 Wire jumper between 3–4 must beinstalled for proper functions55..88 IInnssttaalllliinngg iinntteerrffaaccee ccoonnnneeccttiioonnss91PS/93PS UPS contains a total of 5 signal input connectors for operators which can be used for givingremote control commands to the UPS. User interface connector TB1 can be used for these purposes.Each input is a dry relay contact input and requires two-wire signaling. None of the inputs are pre-programmed but need to be separately programmed by qualified service personnel.When using an external battery system (either the original 91PS/93PS battery cabinet or a customer-sourced battery cabinet/rack), external signaling wiring is recommended to be connected.One general alarm relay output is also on the front panel. This output is either normally open (NO) ornormally closed (NC). The polarity selection is made with a wiring connection. By default, the generalalarm relay activates when a system alarm is active, that is, any ALARM condition is active in the system.Alternatively, it can be activated with any particular event, but this must be programmed separately byqualified service personnel. The alarm relay is designed for signal level (ELV or SELV) voltages only, notfor utility use. For higher signaling circuit voltage requirements, please use an industrial relay adapter inthe MiniSlot.55..88..11 IInnssttaalllliinngg ccuussttoommeerr iinnppuutt ssiiggnnaallss iinntteerrffaacceeThese inputs are located behind the UPS door, in the top section of the UPS. See Figure23: Communication interfaces in the 91PS/93PS UPS 8-10 kW frame for the connector locations.Tie points with strain relief for the communication cables are located on the right and left side of the cableconduit.EATON 91PS/93PS UPS USER’S AND INSTALLATIONGUIDEP-164000672 - 005 2023 www.eaton.eu 4499