System Operation
Copyright © 2008-2011 Eaton Corporation. All Rights Reserved.
IPN 997-00012-63C August 2011
Factory-fitted contactors will be characterized at the factory. If an existing contactor is replaced,
characterize the new contactor from the SC100.
In this case, there will be no LVD Characterization Error alarm.
* LVD Characterization is only available for LVD contactors with auxiliary contacts. If auxiliary
contacts are not fitted then the nominal LVD coil voltage must equal the dc power system nominal
bus voltage. See LVD Specifications on page 62.
► To enable LVD1 and/or LVD2
Use the SC100 keypad to go to: Menu > Configuration > Low Volts Disconnect > Edit
Or, in DCTools go to: Control Processes > LVD
► To manually connect or disconnect an LVD
Use the SC100 keypad to go to: Menu > Controls > LVD1/LVD2 > Control
Select Manual Connect or Manual Disconnect to connect or disconnect the LVD contactor.
The LVD will remain in the selected state until another state or Automatic Control is selected.
Select Automatic Control to return the LVD to automatic operation.
Information
The following information is available about LVDs.
Connected: the LVD contactor is automatically
connected.
Disconnected: the LVD contactor is automatically
disconnected.
Idle: the LVD state has not been set since the SC100
last restarted.
Manual: the LVD contactor is set Manual Connect or
Manual Disconnect from the SC100 keypad.
Failed: see LVD Fail alarm on page 64.
Missing: there is no connection to the I/O board.
SC100: Menu > Controls >
LVD1/LVD2
DCTools: Control Processes
> LVD
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