Eaton SC100 - Page 36

SC100 Handbook
30
Copyright © 2008-2011 Eaton Corporation. All Rights Reserved.
IPN 997-00012-63C August 2011
Configuration
The following parameters must be configured to set the LVDs.
Parameter
Description
Where to find:
Inhibit Period
The minimum time an LVD stays connected or
disconnected before it can change state.
DCTools: Control Processes
> LVD
Allow Front Panel
LVD Control
Disables LVD manual control from the controller front
panel.
DCTools: Configuration >
Communications
LVD1/LVD2 Type
Select the correct contactor type (NO or NC) and if
auxiliary contacts are used.
 If auxiliary contacts are not used, then the
nominal contactor coil voltage must equal the
nominal dc power system voltage (LVD
Characterization is not available).
Enable Slave Mode
(LVD2 only)
LVD2 will disconnect and reconnect simultaneously
with LVD1. Other LVD2 configuration parameters are
ignored.
Enable AC Timer
If Enabled, LVD will disconnect after the AC Timer
Disconnect Delay or at the Disconnect Voltage, whichever
occurs first.
AC Timer
Disconnect Delay
See Enable AC Timer.
LVD1 Disconnect
Voltage
If the bus voltage drops to this value, then any
shutdown rectifiers are restarted (even if LVD is
disabled). If the bus voltage is still lower than this
value after the LVD Recognition Period, then the LVD
will disconnect.
LVD2 Disconnect
Voltage
If the bus voltage drops to this value after the LVD
Recognition Period, then the LVD will disconnect. This
parameter is ignored if Enable LVD2 Slave Mode is
Enabled.
DCTools: Control Processes
> LVD
LVD1 Reconnect
Voltage*
LVD1 reconnects when the bus voltage has been above
this value for the LVD1 Recognition Period and LVD2
is disabled, or has already reconnected, or is in slave
mode.
LVD2 Reconnect
Voltage*
LVD2 reconnects when the bus voltage has been above
this value for the LVD2 Recognition Period. This
parameter is ignored if Enable LVD2 Slave Mode is
Enabled.
LVD1 Recognition
Period
See LVD1 Disconnect Voltage and LVD1 Reconnect
Voltage.
LVD2 Recognition
Period
See LVD2 Disconnect Voltage and LVD2 Reconnect
Voltage.
Enable
LVD1/LVD2 Aux
Temp Disconnect
See Auxiliary Temperature Disconnect on page 31.
 * If the LVD is used as a load-disconnect, ensure the reconnect voltage is set higher than the
expected open-circuit recovery voltage of the discharged batteries.