55..44..22 CCNN1122
Terminal CN12 can be used to connect external alarm signals, such as smoke alarm signals and overheat
alarm signals.
Use twisted-pair cables to connect the alarm device to its related UPS terminal. For external alarm signal
configurations, consult your local Eaton representative.
Figure 26. CN12 terminal layout
1. CI_ALM1
2. CI_ALM2
3. CI_ALM2
4. NULL
5. CI_ALM1 RTN
6. CI_ALM2 RTN
7. CI_ALM3 RTN
55..44..33 IInnssttaallll aa rreemmoottee EEPPOO sswwiittcchh
You can use a remote EPO switch in case of an emergency to shut down the UPS and remove power to
the critical load from a location away from where the UPS is installed.
The remote EPO switch must be a normally-open or normally-closed latching switch that is not tied to any
other circuits.
For the connections, use twisted-pair cables of 0.5–2.0 mm
2
. The tightening torque is 0.8 Nm.
Refer to national and local electrical codes for acceptable wiring practices.
To install a remote EPO switch:
1. Make sure that the UPS system is shut down and all power sources are disconnected.
2. For the wiring configurations, refer to Figure
27: Connections of the EPO switch. Complete one of the
following wiring procedures:
• For a normally-open remote EPO, complete configuration A.
• For a normally-closed remote EPO, complete configuration B.
3. If you install a normally-closed remote EPO switch, connect a jumper cable between pins 3 and 4 on
terminal CN10. For the location of terminal CN10, refer to Figure
24: Communication interfaces.
4. If you install multiple remote EPO switches, wire them in parallel.
EATON 93T USER’S AND INSTALLATION GUIDE 614-40270
-
December 2023 www.eaton.eu 5522
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