GE Industrial Solutions CPS6000-M2 - Manual (Page 122)

CPS6000-M2 Installation Guide H5694720
Issue 8 January 2008 122
Slope Thermal Compensation
The following describes the configuration parameters which may be activated or altered by the
user. Refer to Appendix B for the ranges of values the parameters may take and their factory
default settings.
Lower Thermal Limit (ltt): The lower temperature where, if Low Temperature Compensation is
enabled, the controller will increase plant voltage to a level corresponding to (lsp * (ntt - ltt)*
24)V above the fsp. Plant voltage will be increased proportionally at any temperature between
this point and the Battery Thermal Slope Nominal Temperature (ntt).
Low Temperature Compensation Enable (rve): A 0 disables and 1 enables the Low
Temperature Thermal Compensation feature. Since rve increases plant voltage rather than
decreasing it based on temperature, the option is provided to disable it separately from the entire
feature so that equipment loads sensitive to high voltages can be protected.
Lower Temperature Slope (lsp): The slope rate for the voltage increase per cell when the
battery temperature is below the ntt (Battery Thermal Slope Nominal Temperature).
Battery Thermal Slope Nominal Temperature (ntt): The zero compensation temperature point.
Temperatures monitored between this point and the Upper Temperature Limit (utt) will result in a
proportional decrease of plant voltage to a level corresponding to (usp*(utt-ntt)*24)V below the
fsp at the utt. If Low Temperature Compensation is enabled, temperatures monitored between this