Chapter 3: Using the Web Interface
186
A pop-up appears confirming the reset.
4.
Click Reset.
5.
All active energy readings on this PDU are reset to zero.
Tip: You can choose to reset the active energy reading of an individual inlet or outlet. See Inlet
Configuration Page (on page 41).
PDU Latching Relay Behavior
The PDU incorporates latching relays in models with outlet switching. Unlike non-latching relays, latching relays do NOT
require power to keep their contacts closed.
PDU outlet switching can be configured to operate as a true latching relay or to simulate a non-latching relay. The
operating mode determines the latching relay behavior when PDU power is lost. Regardless of which mode is selected,
power is not required to keep relay contacts closed.
Non-Latching Mode:
•
Relay always opens when power is lost. This insures all relays are open when power is applied to the PDU.
•
Always select this mode if the combined in-rush current of the devices connected to the PDU trip circuit breakers when
power is applied to the PDU.
•
This is the factory default operating mode.
Latching Mode:
•
Relay does not open when power is lost.
•
This is the preferred operating mode ONLY if you are sure in-rush current does not trip circuit breakers when power is
applied to the PDU.
•
Power to the outlet is not disrupted if a PDU internal failure occurs.
•
In Latching mode, the following features are disabled.
PDU-level outlet state on startup: See
Options for Outlet State on Startup
(on page 187).
