ABB CPS6000 Product Manual page 115

• LVLD3 (Disabled)
Disconnect Mode (Voltage); Range: Voltage, Voltage+Time
Disconnect Voltage (42.0V); Range: 39-50V
Time Delay (0 min); Range: 0-300min
Reconnect Mode (Voltage); Range: Voltage, Voltage+Time
Reconnect Voltage (44.0V); Range: 39-55V
Time Delay (0 sec); Range: 0-300sec
Imminent Shutdown Alarm
The Imminent Shutdown Alarm is generated prior to opening the LVBD. Once the LVBD threshold has
occurs, alarm is generated 15 seconds prior to opening the contactor to provide an indication that
system shutdown is imminent due to a system battery disconnect. The alarm is based on the
configured LVBD battery disconnect threshold.
Remote Emergency Power Off (EPO)
Also included in the Disconnect menu is the ability to Enable/Disable the remote Emergency Power Off
(EPO) feature. If enabled, the controller will interpret a contact closure on the alarm terminal block
interface to open the battery contactor. The battery contactor will open five seconds after the contact
has been asserted. Once the contact is removed, the battery contactor will be re-asserted to its
previous operational state.
Ringers
The QS841A can manage up to eight ringer chassis. Ringer operation parameters that include the
ringer output voltage (65-100VAC), ringer output frequency (15-50Hz), whether it has remote DC
Offset (Enabled/Disabled), and if the ringer chassis is operating in the redundant mode (Enabled/
Disabled) are defined in this configuration menu.
Boost
The Boost function allows battery charging to be expedited by raising the system voltage to Boost
level for a set time. The following boost mode parameters are set in this area of the menu system:
Set Point
Voltage Alarms
Max Duration
Automatic
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Boost voltage (set point) is adjustable from -48.0V to -58.0V in 0.1V increments. The factory
default setting is -55.2V.
High voltage alarm thresholds in effect while the system is in boost mode.
The Very High Major alarm triggers shutdown of the faulty rectifier (s). This threshold can be
set from -50V to -60V. The factory default setting is -57.0V.
The High Minor alarm does not force rectifiers to shut down. The threshold can be set
from -50 to -60V. The factory default setting is - 56V.
The Battery On Discharge alarm is low voltage alarm setting while in Boost that operates
similar to that on Float. The threshold can be set from -46 to -55V. The factory default setting
is -51V.
Duration the system can remain in boost mode can be set from 1 to 80 hours. The factory
default setting is 1 hour.
Enabled or Disabled the automatic boost feature. The factory default setting is Disabled.