Figure 26. Connections of the EPO switch. Note that in "Normally closed" (B) situation a
jumper between pins 3 and 4 is needed.
Table 17: Remote EPO wire terminations
From remote
EPO switch
To user interface ter-
minal block EPO in
UPS cabinet
Remarks
NO 3-4
NC 1-2 Wire jumper between 3-4 must be installed for
proper functions
5.6 Installing interface connections
93PM UPS contains a total of five (5) signal input connectors for customers
which can be used for giving remote control commands to the UPS. Customer
interface connector CN5 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.
Note: When using an external battery system, Eaton recommends you to
connect external signal wiring.
There is also one general alarm relay output on the front panel. This output is
either normally open (NO) or normally closed (NC). Polarity selection is made
with wiring connection. By default, the general alarm relay activates when a
system 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 be
programmed separately by qualified service personnel. The alarm relay is
designed for signal level (ELV or SELV) voltages only, not for utility use. For
Eaton 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)
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