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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 point and the Lower Thermal Limit (ltt) will result in a
proportional increase of plant voltage to a level corresponding to (lsp*(ntt
-
ltt)*24)V above the fsp at
the ltt.
Upper Temperature Slope (usp):
The slope rate for the voltage decrease per cell when the battery
temperature is above the ntt (Battery Thermal Slope Nominal Temperature).
Upper Temperature Limit (utt):
The upper temperature where Battery Thermal Compensation will have
reduced plant voltage to a level corresponding to (usp*(utt
-
ntt)*24)V below the fsp. Plant voltage will
be reduced proportionally at any temperature between this point and the Battery Thermal Slope
Nominal Temperature (ntt).
Battery Thermal Alarm Threshold (thr):
A monitored battery temperature above this threshold results
in a Battery Thermal alarm with a PMN severity.
Battery Thermal Step Temperature (spt):
A monitored battery temperature above this threshold
results in an additional 4.08V
“
step
”
decrease in plant voltage.
Plant Battery Test
The following is a list of plant battery test parameters that can be configured in the controller. The
result of the Plant Battery Test is available in the
“
Batteries
”
sub
-
menu of the
“
Status
”
menu.
Manual Test:
Permits manually starting a battery discharge test. The test can be set to end on either of
the following two parameters.
Duration:
The duration of the test can be set from 0.1 hours to 99.9 hours.
Cutoff Cell V:
The test can be set to end when battery cell voltage reaches this cutoff voltage. Cutoff
voltage can be set from 1.5V to 2.0V.
Summary of Contents for CPS6000
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