GE Industrial Solutions Galaxy Vector Rack Mounted Controller J85501M-1 - Manual (Page 57)

Galaxy Rack-Mounted Vector Controller J85501M-1
Issue 2 January 2008 Installation and Configuration 4 - 11
two distribution bays to be monitored separately. If the current is
displayed as “Err,” the system may contain a battery shunt or
may be improperly wired.
Battery: Placing one or both shunts in the charge/discharge path
of the system batteries and configuring the shunts as Battery
shunts results in a system load current that is the calculated
difference of the sum of the individual rectifier currents and the
sum of the battery charge currents obtained from the shunt
measurements. This is the typical configuration used with most
distributed architecture systems. It is accurate regardless of
whether system batteries are charging or discharging.
Shunt Size The shunts are assumed to have a voltage rating of 50mV. The
full scale load ratings are user configurable. Each shunt can have
a current rating configured from 1 to 9999 amps. A value of 0000
disables that shunt reading.
System Float
Mode Settings
The following parameters are settings which are active anytime
the plant is in Float mode.
System Float Voltage Set-Point: This is the output voltage that
all system rectifiers will be set to while in Float mode. If Battery
Thermal Compensation is enabled and active, the actual system
voltage will be adjusted from Float Set Point based on the
highest battery temperature monitored by the Vector.
Rectifier Float Current Limit: Rectifier current limit can be
adjusted from 30 to 110% of rectifier capacity. This is the
current limit while the system is in Float mode.
High Float Voltage Major Alarm Threshold: System voltage
monitored above this threshold results in a High Voltage major
alarm and possible rectifier shutdown while in Float mode.
High Float Voltage Float Minor Alarm Threshold: System
voltage monitored above this threshold results in a High Float
Voltage minor alarm (no rectifier shutdown) while in Float
mode.
Battery on Discharge Float Major Alarm Threshold: System
voltage monitored below this threshold results in a Battery
Discharge major alarm while in Float or Boost mode.