Tyco Electronics Galaxy SC Controller J85501F-1
Issue 13 February 2001 Configuration 4 - 13
and activate the PMN contact closure (assuming there is no alarm with
CRITICAL or MAJOR severity level active). The purpose of this alarm
is to indicate that the plant voltage is high, probably due to an
adjustment in the plant rather than due to a failure. This alarm allows the
High Voltage (HV) shutdown threshold to be raised slightly, thus
reducing the number of nuisance shutdowns without decreasing the
plant reliability. Move the cursor to the fields, and use the <+> or <->
key to adjust the High Voltage shut down alarm for both FLOAT and
BOOST mode to the desired level (normally smaller than the HV
threshold). Press <ENTER> to save the change.
Battery Discharge (BD) alarm threshold: Again, there are two values
for this alarm threshold, one for FLOAT and one for BOOST/BTP
mode. If the plant voltage is smaller than the threshold value, the Battery
Discharge alarm is turned ON. This in turn activates the PMJ and BD
relay and lights the MAJ and BD LEDs. Move the cursor to the fields,
and use the <+> or <-> key to adjust the threshold to the desired level.
Press <ENTER> to save the change.
Note: Setting the boost BD threshold higher than the float voltage will
cause a BD alarm when changing from boost to float mode due to the
fact that the boost threshold is used for the first three minutes after the
mode change.
Rectifier On: This is not an alarm threshold. This threshold value is for
all the rectifiers in the plant. When the plant input voltage is lower than
the threshold, the rectifiers will be turned ON in an orderly and timely
fashion. Move the cursor to the field, and use the <+> or <-> key to
adjust the threshold value. Press <ENTER> to save the change.
Very Low Voltage alarm threshold: This alarm threshold is used to
indicate that the voltage is very low, and that the battery discharge has
occurred to a significant depth. When the plant voltage falls below this
level, the Very Low Voltage (VLV) and Power Critical alarm will be
generated. Move the cursor to the field, and use the <+> or <-> key to
adjust the threshold value. Press <ENTER> to save the change.
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