MISSION 1K●2K●3K
SINGLE PHASE
Rev. 02
– 19 March 2015
26
6.5.4 Emergency Power Off (EPO)
The EPO function is used to shutdown the Ups by remote. This function, for example, can be used to turn off
the load connected to the UPS by means of a thermal relay in case of over temperature in a room.
When the EPO is activated, the UPS immediately switches off the output by disconnecting power from all the
loads connected, the Ups remain alarmed by displaying the "EPO ON" message on the display, the Red LED
will turn on and start a continuous acoustic signaling.
You can also activate the EPO function via the buttons on the Ups front panel. To do this, simultaneously press
all three buttons for about a second. The ups will be in the same condition described above.
In both conditions to disable the EPO function, you must press the same combination of three keys, the word
"EPO OFF" will be displayed, the red LED will blink 2 times (at the same time with 2 beeps) every 4 seconds.
To come back to normal operation press buttons
+
for selecting OFF.
Now it is possible to restart the Ups by pressing buttons
+
ON.
EPO Connections
Wire Function Terminal Wire Size Rating Suggested Wire Size
EPO L1
4
– 0.32 mm2 (12–22 AWG) 0.82 mm2 (18 AWG)
L2
You can set the polarity of the EPO to refer to paragraph 4.3.8 (Emergency Power Off polarity configuration).
NOTE: Depending on the user's configuration you can keep the UPS short-circuited by opening the EPO
contacts. To restart the Ups, re-open or re-connect contacts and power up the Ups manually.
The maximum short-circuit resistance is 10 ohm.
To avoid accidental loss of load, it is always advisable to test the EPO function before applying the load.
Leave the EPO connector installed in its seat on the back of the UPS even if the EPO function is not used.
