UPServer2.0
ON-LINE DOUBLE CONVERSION
Figura 18
SNMP card
RELAY card
2
5
3
4
7
6
8
1
Figure 19 UPS rear view
1) Input plugin
2) UPS output outlets
3) Thermal fuse
4) EPO
5) RJ11/RJ45
6) RS-232 port
7) USB port
8) Optiona slot for communication
Emergency Power-off
EPO 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 EPO
is activated, the UPS shuts down the output and all its power converters immediately. The UPS
remains on to alarm the fault.
There is also a front panel EPO option for user to initial EPO function by pressing the three switch
on the front panel together. When the three switches is pressed down at the same time, the EPO
function will be actived, UPS will shutdown and the buzzer will long beep. Pressing startup
switches will not turn on the UPS unless the EPO function is deactived by pressing the three
switches together and press off switches to return normal status.
WARNING
The EPO circuit is an IEC 60950 safety extra low voltage (SELV) circuit. This
circuit must be separated from any hazardous voltage circuits by reinforced
insulation.
CAUTION
● The EPO must not be connected to any utility connected circuits. Reinforced
insulation to the utility is required. The EPO switch must have a minimum rating
of 24 Vdc and 20 mA and be a dedicated latching-type switch not tied into
another circuit. The EPO signal must remain active for at least 250 ms for proper
operation.
● To ensure the UPS stops supplying power to the load during any mode of
