46
30-200 kW
P-164000249
User's and Installation Guide
Revision 2
Figure 4-8: Connections of the EPO switch
From remote EPO switch
To customer interface Terminal
block EPO in UPS cabinet
Remarks
NO
1-2
NC
3-4
Wire jumper between 1-2 must be in-
stalled for proper functions.
Table 4-1: Remote EPO wire terminations
4.5 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.
When using an external battery system (either the original 93PM battery cabinet or a customer
sourced battery cabinet/rack), external signaling wiring is recommended to be connected.
One (1) general alarm relay output is also 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 higher signaling circuit voltage requirements, please use
Industrial Relay Adapter in Mini-slot.
4.5.1 Installing customer input signals interface
These inputs are located behind the UPS door, on top section of the UPS. See
Figure 5-1:
Communication interfaces
on page 53 for connector locations.
Tie points with strain relief for communication cables are located on the right and left side of the cable
conduit.
Signal inputs can be configured to different functions. Normally these functions are either informative
(for example “On Generator”) or functional (for example remote “Go to bypass” command).
