Figure 26. Connections of the EPO switch. Note that in "Normally closed" (B) situation ajumper between pins 3 and 4 is needed.Table 17: Remote EPO wire terminationsFrom remoteEPO switchTo user interface ter-minal block EPO inUPS cabinetRemarksNO 3-4NC 1-2 Wire jumper between 3-4 must be installed forproper functions5.6 Installing interface connections93PM UPS contains a total of five (5) signal input connectors for customerswhich can be used for giving remote control commands to the UPS. Customerinterface connector CN5 can be used for these purposes. Each input is a dryrelay contact input and requires two wire signaling. None of the inputs are pre-programmed but need to be separately programmed by qualified servicepersonnel.Note: When using an external battery system, Eaton recommends you toconnect external signal wiring.There is also one general alarm relay output on the front panel. This output iseither normally open (NO) or normally closed (NC). Polarity selection is madewith wiring connection. By default, the general alarm relay activates when asystem alarm is active, that is, any ALARM condition in the system is active.Alternatively, it can be activated with any particular event but this must beprogrammed separately by qualified service personnel. The alarm relay isdesigned for signal level (ELV or SELV) voltages only, not for utility use. ForEaton 93PM UPS 30–200 kVA User's and installation guide© Eaton Corporation plc 2017. All rights reserved. Revision: 005 Document ID: P-164000249 70 (126)
