GE Industrial Solutions Galaxy Vector Controller GCM3 - Manual (Page 45)

Galaxy Vector Controller GCM2, GCM3
Issue 4 January 2008 Operation 3 - 11
Refer to the Alarm Descriptions section for the Battery Thermal
Alarm and Temperature Probe Failure Alarm.
The Vector can also increase plant voltage above the FSP for
colder environments. Again, this seeks to keep batteries in such
an environment at their optimum charge state. Since this feature
results in an increase in plant voltage, it is activated through a
second enable switch during configuration. Again, refer to
Figure 3-1 or 3-2.
Figure 3-1: Battery Thermal Compensation Set Points (Standard)
0
–0.17
55 65 75 45 25 5
Temperature
Compensation
Voltage Adjustment
(volts per cell)
G -High Battery Temperature
Alarm Threshold (30 to 85 °C)1
H - High Battery Temperature
Step Down At (45 to 85 °C)2
F - High Battery Temperature Voltage
Decrease Upper Threshold Limit (30 to 55 °C)
D - Battery Temperature At Which There
Is No Voltage Compansation (15 to 30 °C)
B - Battery Low Temperature Compensation
Voltage Increase (Enable/Disable)
A - Battery Low Temperature Voltage
Increase Threshold (-5 to +20 °C)
C - Battery Low Temperature Voltage
Increase (1mV to 5mV / Cell / °C)
E - High Battery Temperature Decrease
Voltage Rate (1mV to 5mV / Cell / °C)
Cell Temperature ( C)
Default Settings
C (D – A) •
E (F – D) •
1. The Battery High Temperature Alarm occurs when the temperature rises above the High Battery
Temperature Alarm Threshold ( ) set point. It retires when the temperature decreases to 10 °C below
this set point set point (45 °C default).
2. Plant voltage decreases 0.17 volts per cell when the temperature increases above the High Temperature
Voltage Step Down At ( ) set point. It is increased 0.17 volts per cell when the temperature decreases to
10 °C below this set point, as indicated by the dashed line (65 °C default).
G
H
B - Low Temperature Voltage
Compensation Disabled