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Connectivity Cards
C onnectivity cards allow the UPS to communicate in a variety of
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n etworking environments and with different types of devices. The UPS has one
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available communication bay for the following connectivity cards:
●
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through a Web browser interface; connects to a twisted-pair Ethernet
(10/100BaseT) network. In addition, a Environmental Monitoring Probe can be
attached to obtain humidity, temperature, smoke alarm, and security information.
● Relay Interface Card - has isolated dry contact relay outputs for UPS status:
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Utility failure, Low battery, UPS alarm/OK, or On bypass.
S ee Figure
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F igure 20 Optional Connectivity Cards
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N OTE：Before installing the connectivity card , please remove the clip from the bay.
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Refer to the user's manual of the appropriate cards.
Emergency Power-off
E PO is used to shut down the UPS from a distance. This feature can be used for
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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.
T here is also a front panel EPO option for user to initial EPO function by pressing the
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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.
The EPO circuit is an IEC 60950 safety extra low voltage (SELV)
must be separated from any hazardous voltage circuits by reinforced insulation.
● 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
operation, the input power must be disconnected from the UPS when the
Web/SNMP Card - has SNMP and HTTP capabilities as well as monitoring
17, 18
on page
WARNING
CAUTION
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for the location of the communication bay.
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circuit. This circuit
any mode of
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