Remote Emergency Power-Off - Powerware 9155 User Manual

Communication
62
Powerware

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.
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.
Wire Function
REPO
L1
L2
9155 UPS (8–15 kVA) User's Guide
®
C A U T I O N
REPO Connections
Terminal Wire Size Rating
12–22 AWG 12–22 AWG
2
(4–0.32 mm )
164201553 Rev D www.powerware.com
S
Suggested Wire Size
2 2
18 AWG (0.82 mm 18 AWG (0 82 mm ) )