Communication

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, 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 32 on page 53).

If the use of normally-open REPO operation is desired, connect a normally-open external switch (see Figure 32 on page 53).

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 rear panel even if the REPO function is not needed.

 

 

 

 

 

 

 

 

 

 

 

C A U T I O N

 

 

 

 

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.

 

 

 

 

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

18 AWG (0.82 mm2)

 

 

 

 

 

 

 

 

 

L2

(4–0.32 mm2)

 

 

 

 

 

 

62

Powerware® 9155 UPS (8–15 kVA) User’s Guide S 164201553 Rev D www.powerware.com