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Powerware
®
9150 User’s Guide www.powerware.com
Remote Emergency Power-off Input
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. Remote shutdown wires
are connected on connector X2 (see Figure 18 on page 46).
The pins of connector X2 have been connected together. When this
connection is open, the logic circuitry completely shuts down the UPS,
thus preventing the power from supplying the load.
NOTE In order to restart the UPS, the pins of connector X2 have to be connected, the
battery breaker (CB1) must be reset, and the UPS ON/OFF switch must be turned off
and then back on. The pins must be shorted in order to keep the UPS running.
Maximum resistance is 10 ohm.
CAUTION
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.
REPO Connections
Wire Function Terminal
Position
Terminal Wire Size
Rating
Suggested Wire Size
REPO
L1 X2-1
12 - 22 AWG
1
8
A
W
G
(
0
7
5
m
m
2
)
L2 X2-2
1
2
-
2
2
A
W
G
(4 - 0 mm
2
)
18 AWG (0.75 mm
2
)
When REPO is initiated, the UPS Alarm indicator blinks and the audible
alarm sounds 3 short beeps and 1 long beep.
Efficiency Optimizer Function
This feature can be activated by your service representative. The
Efficiency Optimizer function minimizes power loss and reduces power
consumption by automatically switching between Bypass and Online
Mode according to the utility power condition.
When utility power is constant and free from disturbances, the UPS
switches automatically to Bypass Mode for maximum efficiency. The
UPS detects all power imperfections instantly and returns to Online
Mode when necessary. As a result, the UPS reaches up to 98% average
efficiency.