GE Industrial Solutions CPS6000 - Manual (Page 121)

CPS6000 –48V Indoor/Outdoor Power Shelf
Issue 21 January 2008
121
Configuration
This area of the menu system is where system operational parameters, system device
information, and alarm thresholds are set up. These items have been pre-configured for the
standard QS841A controller. Note: The controller requires time to update sectors in its flash
memory when changes are made. Please allow approximately 2 minutes for the controller to
accept and place the modifications in non-volatile memory before removing power to the unit.
Float Settings
Set the system float voltage and the thresholds for the following alarms:
Set Point System Float Voltage set-point adjustable from -42.0 to -56.5V
with a factory default of -54.5V.
Very High Voltage
Major Alarm occurs and the unit is shut down when the system detects
voltage above its set threshold. The threshold can be set from -
50V to- 60V in 1V increments. The factory default setting is -
57V.
High Voltage
Minor Alarm indicates an abnormally high output voltage but does not
shut the unit down. The alarm threshold can be set from -50V to -
60V in 1V increments. The factory default setting is -56V.
BD
(Battery on Discharge)
Major Alarm occurs when the system is operating either completely or
partially on battery power. The alarm threshold can be set from -
46V to -55V in 0.1V increments. The factory default setting is -
51.0V.
Very Low Voltage
Major Alarm indicates an imminent system shutdown due to discharging
batteries or low output voltage. The alarm threshold can be set
from -40V to -51V in 0.1V increments. The factory default
setting is -46.0V.
Shunt Monitors
The QS841A utilizes RS485 serial communication to external distribution monitoring and
control boards for shunt measurements and contactor control. Up to six external boards can be
controlled by the controller. These boards are identified by assigning them an address and an
appropriate operation.
Each individual LVD distribution and control board is uniquely addressed by an appropriate
ID setting and assigned to an operation Type. The available Types are: Battery, Load, and
None. Shunt sizes for each assigned battery or load type must also be configured. All shunts
are assumed to have a voltage rating of 50mV. The current rating of each shunt is
programmable between 0 to 9999A. Systems that are ordered with the QS841A such as the
NX400 come factory preconfigured. Following are the fields that need to be programmed.