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5.2 X2-Remote EPO Input Port
The UPS has an Emergency Power off (EPO) Function that can be operated by a remote contact
assigned by the user. Users can set the logic (N.C or N.O) of this EPO Function through LCD panel.
X2 is the remote EPO input port. The port is shown in Figure 5-3 and described in Table 5-2.
Figure 5-3 Remote EPO input port
Table 5-2 Description of remote EPO port
EPO Logic Setting
Position
Description
N.C
X2.1 & X2.2
EPO activated when Opened X2.1 & X2.2
N.O
X2.1 & X2.2
EPO activated when Shorted X2.1 & X2.2
If EPO Logic setting is Normal Closed (N.C), EPO is triggered when pins 1 and 2 of X1 are opened.
Otherwise, EPO Logic setting is Normal Opened (N.O). EPO is triggered when pins 1 and 2 of X2
are closed.
Note:
1. EPO action shuts down the rectifiers, inverters and static transfer switch. But it does not
internally disconnect the input power supply.
2. The default setting of the EPO function logic is Normal Opened (N.O).
5.3
Other Communication Interface
5.3.1 Extra Comm. Slot
There is an optional card, Extra Comm. Card which can be inserted into this slot. This option can
enhance the communication capability of the modular UPS. It provides an additional SNMP Slot,
Dry contact I/P & O/P signals and temperature sensors ports.
5.3.2 Local Communication Ports – RS232 & USB
Note: The RS232 and USB ports can’t work simultaneously.
5.3.3 SNMP Slot
The SNMP card or AS400 card can be inserted into this slot to work with the UPS.
