COMMUNICATION
Eaton 9155 UPS (8–15 kVA) User's Guide S 164201553 Rev G (www.eaton.com/powerquality)
55
Remote Emergency Power-off
REPO is used to shut down the UPS from a distance. This feature can be used for
shutting down the load and the UPS by thermal relay, for instance in the event of
room overtemperature. When REPO is activated, the UPS shuts down all converters,
de-energizes all system relays, trips the battery circuit breaker, and fully powers down
within 10-15 seconds.
There are two REPO positions that may be used, normally-open or normally-closed.
The pins on the normally-closed REPO connector are connected together. When this
connection is open, the logic circuitry completely shuts down the UPS, thus
preventing the power from supplying the load.
If the use of normally-closed REPO operation is desired, replace the connector with a
normally-closed external switch (see Figure 36 on page 49).
If the use of normally-open REPO operation is desired, connect a normally-open
external switch (see Figure 36 on page 49).
NOTE To restart the UPS, reconnect the REPO connector pins and turn on the UPS manually. The pins must
be shorted to keep the UPS running. Maximum resistance is 10 ohm.
NOTE Leave the REPO connector installed in the REPO port on the UPS even if the REPO function is not
needed.
C A U T I O N
S The REPO must not be connected to any utility connected circuits. Reinforced insulation to the utility is
required. The REPO switch must have a minimum rating of 24 Vdc and 20 mA.
S To ensure the UPS stops supplying power to the load during any mode of operation, the input power must
be disconnected from the UPS when the emergency power-off function is activated.
REPO Connections
Wire Function Terminal Wire Size Rating Suggested Wire Size
REPO
L1
12–22 AWG (4–0.32 mm
2
) 18 AWG (0.82 mm
2
)
L2
Relay Output Contacts
The UPS incorporates a programmable relay output with potential free contacts for
remote alarm indications (see Figure 36 on page 49). An additional four relay outputs
can be obtained with the X-Slot compatible Relay Interface Card.
W A R N I N G
The relay output contacts must not be connected to any utility connected circuits. Reinforced insulation to
the utility is required. The relay output contacts have a maximum rating of 30 Vac/1A and 60 Vdc/2A nominal
values.
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