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UPS2000-G1-(1 kVA–3 kVA)
User Manual
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Connecting Cables to EPO Ports and Dry Contacts
In emergencies, such as floods or fire, emergency power-off (EPO) allows you to cut off
power supplies (in normal mode or bypass mode) to loads.
Connect an external button to the EPO ports. One second after you press the button, which
means that ports 5 and 6 are short-circuited, the inverter stops, and the bypass is also disabled.
In this way, the UPS output stops immediately.
Figure 3-8 shows how to connect cables to EPO ports and dry contacts.
Figure 3-8 Connecting cables to EPO ports and dry contacts
Table 3-3 shows the status indicated by EPO ports and dry contacts.
Table 3-3 Status indicated by EPO ports and dry contacts
EPO Port and Dry Contact Status
Open circuit between dry contacts 1 and 2
Short circuit between dry contacts 1 and 2
Open circuit between dry contacts 3 and 4
Short circuit between dry contacts 3 and 4
Open circuit between EPO ports 5 and 6
Short circuit between EPO ports 5 and 6
Issue 05 (2013-07-17)
NOTE
For details about how to use the NetEco Express(RS232), see the NetEco Express(RS232) V100R001
User Manual.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Description
The AC input is normal.
The AC input is failure.
The UPS is working properly.
The UPS is faulty.
EPO is disabled.
EPO is enabled.
3 Installation
19
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