CertaUPS C500, Installation Manual, Page: 38 / 54

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Emergency Power off (EPO)
The Emergence Power Off interface provides an emergence power off function.
When the EPO function is enabled (default setting the UPS will shut off the output
and enter into EPO mode when the plug is removed. The UPS will also be
unresponsive to all inputs until the EPO plug is reinserted into the UPS.
Dry in & Dry out
Dry in allows maintenance bypass to be remotely switched on and off. When the
contact changes the maintenance bypass is switched on or off depending on its
current state.
Dry out could indicate the status of UPS.
The Dry out port is normally closed, if the Dry out port is open it indicates an event
has occurred such as;

Output overload

On battery mode

Battery low

Battery disconnected

Bypass enabled
6.2 Network Management Card (Optional)
The Network Management Card allows the UPS to communicate with monitoring
devices by utilizing network connectivity. The Online series has one available
expansion bay for the following connectivity cards:
1. UPS-MS Web/SNMP Card – this interface card provides SNMP and HTTP
capabilities as well as monitoring through a Web browser interface using
RJ45 10/100Mbps over TCP/IP.
2. AS400 card for AS400 communication protocol. Please contact your local
distributor for details.