GE Industrial Solutions Galaxy Vector Rack Mounted Controller J85501M-1 - Manual (Page 66)

Galaxy Rack-Mounted Vector Controller J85501M-1
5 - 2 Troubleshooting Issue 2 January 2008
If voltage difference ≥ 0.17, the highest battery temperature is at
least as high as the battery thermal step temperature hysteresis
value, which is the battery thermal step temperature – 10°C.
If voltage difference = 0.1, the highest battery temperature is
between the battery thermal upper temperature and the battery
thermal step hysteresis value.
If voltage difference > 0 and voltage difference < 0.10,
temperature = thermal nominal temp + voltage difference
×
(thermal upper temp – thermal nominal temp)
Note: This will be a temperature in the range of the battery
thermal nominal temperature setting and the battery thermal
upper temperature setting.
If voltage difference ≤ -0.10, the highest battery temperature is
at or lower than the battery thermal lower temperature setting.
If voltage difference < 0 and voltage difference > -0.10,
temperature = thermal lower temp – voltage difference
×
(thermal nominal temp – thermal lower temp)
Note: this will be a temperature in the range of the battery
thermal lower temperature setting and the battery thermal
nominal temperature setting.
Inaccurate Plant
Voltage Readings
If the default menu of the LCD indicates that the system is in
“compensation mode,” this indicates that the plant voltage has
been altered to raise or lower based on the highest battery
temperature. Temporarily disabling the Battery Thermal
Compensation feature through the configuration menu returns
the system voltage to the set point.
The system voltage may differ slightly from an external meter
reading. This difference could be attributed to the calibration or
accuracy of the external voltmeter. A meter adjustment may be
attempted by using the “Calibrate to meter” function in the
Configuration menu. See to the plant voltage configuration
section.
If the voltage sense wires are open or reversed, the display will
be +16 or -35 depending on the GCM type.