54
least 250 ms for proper operation.
● 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.
NOTE
For Europe, the emergency switch requirements are
detailed in Harmonized document HD-384-48 S1,
“Electrical Installation of the Buildings, Part 4: Protection
for Safety Chapter 46: Isolation and Switching.”
EPO Connections
Wire Function Terminal Wire Size Rating Suggested Wire Size
EPO L1
4–0.32 mm
²
(12–22 AWG) 0.82 mm
²
(18 AWG)
L2
NOTE
Leave the EPO connector installed onto the EPO port
of the UPS even if the EPO function is not needed.
See Figure 20, 21 on page 49 for EPO location. Figure 24
shows a schematic of the EPO connector contacts.
Figure 24 EPO Connections
You can set the EPO polarity. See the “EPO Input Polarity”
setting in“User Settings”on page 37.
NOTE
Depending on user configuration, the pins must be
shorted or opened to keep the UPS running. To restart the
UPS, reconnect (re-open) the EPO connector pins and turn on
EPO
